C14500 Tellurium Copper
Primary Designation:UNS C14500
Aliases:
Tellurium CopperFree-Machining Copper 145C14500
Mat Grades internal verification confirms source-backed fidelity and data integrity. It does not constitute external certification, ASTM/CDA endorsement, or guaranteed material conformity for procurement.
Data Completeness & Record Integrity:3 composition elements and 122 contextual property values cataloged.
Omitted fields represent unverified parameters. "Missing is better than invented."
Key Engineering Properties
Representative source rows, qualified by their reported conditions. Inspect the tables below for all values, limits, and source notes.
Density
8.941 g/cm³TYPICAL · at 20 °C
Electrical Conductivity
93 % IACSTYPICAL · at 20 °C
Thermal Conductivity
354.8 W/(m·K)TYPICAL · at 20 °C
Specific Heat Capacity
385.2 J/(kg·K)TYPICAL · at 20 °C
Melting Range (Solidus / Liquidus)
1051.1 – 1080 °C1924.0 – 1976.0 °F
Solidus: 1051.1°C | Liquidus: 1080°CComposition Excerpt
Cu ≥ 99.9 wt%Copper (min)
Standard Elemental Basis: MINEngineering Summary
UNS C14500 Tellurium Copper (99.5% Cu min, 0.40-0.7% Te, 0.004-0.012% P) provides exceptional machinability (85% rating relative to C36000) combined with 93% IACS electrical conductivity and high thermal conductivity. Dispersed copper telluride precipitates act as internal chip-breakers for automated precision turning while preserving hydrogen embrittlement immunity.
Documented Product Applications (Cited CDA Reference Profile)
- ›Architecture: Fire Protection
- ›Electrical Connectors: Conductivity (Thermal)
- ›Electrical Connectors: Corrosion Resistance
- ›Electrical Connectors: Machining Characteristics
- ›Electrical: Electrical Connectors
- ›Fire Protection: Corrosion Resistance
- ›Fire Protection: Machining Characteristics
- ›Fixtures: Forming Characteristics
- ›Fixtures: Machining Characteristics
- ›Forgings: Conductivity (Thermal)
- ›Forgings: Machining Characteristics
- ›Forgings: Softening Resistance
Recognized Aliases
Source-backed commercial trade name and short designations cataloged in canonical data.
Tellurium CopperFree-Machining Copper 145C14500
Standard Designations & Applicable Specifications
Semantically classified designations distinguishing primary standard identifiers, commercial trade names, and applicable specification references.
Direct Standard DesignationsDIRECT DESIGNATION
2 Primary Identifiers| System | Identifier | Standard System Name | Classification Notes & Provenance |
|---|---|---|---|
| UNSPRIMARY | C14500 | Unified Numbering System | Unified Numbering System standard designation for copper alloys (CDA / SAE / ASTM)Ref: CDA UNS Standard Designations Register (C14500) |
| CDA | Alloy 145 | Copper Development Association Alloy Number | CDA three-digit legacy designationRef: CDA UNS Standard Designations Register (C14500) |
Recognized Commercial Aliases & Trade NamesCOMMON ALIAS
3 Listed| Recognized Name / Alias | Classification | Technical Usage & Context |
|---|---|---|
| Tellurium Copper | Standard Commercial Name | CDA Standard Commercial Name |
| Free-Machining Copper 145 | Commercial Alias | Colloquial or commercial industry synonym |
| C14500 | Commercial Alias | Colloquial or commercial industry synonym |
Applicable Specifications & Product Form ReferencesSPECIFICATION REFERENCE
10 Applicable Standards| Standards Body | Specification Code | Specification Title / Scope | Relationship Type |
|---|---|---|---|
| ASTM | ASTM B224 | Standard Classification of Coppers | Specification Reference |
| ASTM | ASTM B124/B124M | COPPER AND COPPER-ALLOY FORGING ROD, BAR AND SHAPES | Specification Reference |
| ASTM | ASTM B301/B301M | FREE-CUTTING COPPER ROD AND BAR | Specification Reference |
| FEDERAL | FEDERAL QQ-B-650 | BRAZING ALLOY, COPPER, COPPER-ZINC, AND COPPER-PHOSPHORUS | Specification Reference |
| ASTM | ASTM B283/B283M | COPPER AND COPPER ALLOY DIE FORGINGS (HOT PRESSED) | Specification Reference |
| ASME | ASME B16.22 | WROUGHT COPPER AND COPPER ALLOY SOLDER-JOINT PRESSURE FITTINGS | Specification Reference |
| ASME | ASME SB283 | COPPER AND COPPER ALLOY DIE FORGINGS (HOT PRESSED) | Specification Reference |
| SAE | SAE J463 | WROUGHT COPPER AND COPPER ALLOYS | Specification Reference |
| SAE | SAE J461 | WROUGHT AND CAST COPPER ALLOYS | Specification Reference |
| ASTM | ASTM B216 | REFINERY SHAPES, TOUGH-PITCH FIRE-REFINED | Specification Reference |
Engineering Notice: Applicable specifications establish manufacturing requirements, dimensional tolerances, and test criteria for specific product forms (e.g. bus bar, wire, plate, pipe). They represent applicable technical standards, not alternative or equivalent alloy grades.
Chemical Composition (Weight %)
Elemental limits and values from the cited source. Preserves exact semantic limits (minimums, maximums, and ranges).
| Element | Symbol | Atomic No. | Semantic Basis | Specified Value | Unit | Metallurgical Notes & Qualification | Data Status |
|---|---|---|---|---|---|---|---|
| Copper | Cu | 29 | MINIMUM | ≥ 99.90 | wt% | CDA chemical composition specification limits for C14500: min 99.9 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Phosphorus | P | 15 | RANGE | 0.00 – 0.01 | wt% | CDA chemical composition specification limits for C14500: 0.004 - 0.012 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Tellurium | Te | 52 | RANGE | 0.40 – 0.70 | wt% | CDA chemical composition specification limits for C14500: 0.4 - 0.7 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
* Elemental percentages are expressed in weight percent (wt%). Values represent applicable specification limits. Unspecified trace elements are not fabricated or assumed.Preserves exact semantic basis
Property Display UnitsSwitch between Canonical SI and Source / US Customary units:
Physical Properties
Source-specific physical properties. Test temperatures are shown only where reported.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Density | 8.941 g/cm³ | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Density 0.323 lb/cu in. at 68°F (8.941 g/cm³ at 20°C) | 0.323 lb/cu in. at 68°F | Copper Development Association Inc. | VERIFIED |
Thermal & Thermodynamic Properties
Phase change temperatures, thermal conductivity, specific heat, mean coefficients of thermal expansion across standardized temperature ranges, and recommended thermal processing windows.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Liquidus Temperature | 1080 °C | TYPICAL | CDA Physical Properties: Liquidus temperature 1976.0 °F (1080.0 °C) | 1976.0 °F | Copper Development Association Inc. | VERIFIED |
| Solidus Temperature | 1051.1 °C | TYPICAL | CDA Physical Properties: Solidus temperature 1924.0 °F (1051.1 °C) | 1924.0 °F | Copper Development Association Inc. | VERIFIED |
| Thermal Conductivity | 354.8 W/(m·K) | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Thermal conductivity 205.0 Btu/(ft·hr·°F) (354.8 W/(m·K) at 20°C) | 205.0 Btu/ sq ft/ ft hr/ °F at 68°F | Copper Development Association Inc. | VERIFIED |
| Coefficient of Thermal Expansion (CTE) | 17.1 µm/(m·K) | TYPICAL | CDA Physical Properties: CTE 9.5 µin/(in·°F) (17.1 µm/(m·K)) over range 68-21210°F | 9.5 10^-6 per °F | Copper Development Association Inc. | VERIFIED |
| Coefficient of Thermal Expansion (CTE) | 17.46 µm/(m·K) | TYPICAL | CDA Physical Properties: CTE 9.7 µin/(in·°F) (17.46 µm/(m·K)) over range 68-39210°F | 9.7 10^-6 per °F | Copper Development Association Inc. | VERIFIED |
| Coefficient of Thermal Expansion (CTE) | 17.82 µm/(m·K) | TYPICAL | CDA Physical Properties: CTE 9.9 µin/(in·°F) (17.82 µm/(m·K)) over range 68-57210°F | 9.9 10^-6 per °F | Copper Development Association Inc. | VERIFIED |
| Specific Heat Capacity | 385.2 J/(kg·K) | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Specific heat 0.092 Btu/(lb·°F) (385.2 J/(kg·K)) | 0.092 Btu/ lb /°F at 68°F | Copper Development Association Inc. | VERIFIED |
| Annealing Temperature Range | 426.7 – 648.9 °C | RANGE | CDA Thermal Treatments: Annealing temperature range 800 - 1200°F (426.7 - 648.9°C) | 800 – 1200 °F | Copper Development Association Inc. | VERIFIED |
| Hot Working Temperature Range | 760 – 871.1 °C | RANGE | CDA Thermal Treatments: Hot working range 1400 - 1600°F (760.0 - 871.1°C) | 1400 – 1600 °F | Copper Development Association Inc. | VERIFIED |
Electrical Properties
Electrical conductivity and resistivity in their reported units and conditions.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Electrical Conductivity | 93 % IACS | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Volume conductivity 93.0 % IACS at 68°F (20°C) | 93.0 % IACS at 68°F | Copper Development Association Inc. | VERIFIED |
Contextual Mechanical Properties & Tempers
Engineering strength, ductility, and hardness values grouped by product form, temper, and section thickness. Mechanical properties are contextual and not isotropic averages.
Elastic & Baseline Mechanical ConstantsSource-specific measurement conditions
Modulus of Elasticity (Tension)
117.2 GPa
CDA Physical Properties: Elastic modulus in tension 17000.0 ksi (117.2 GPa)Modulus of Rigidity
44126.4 MPa
CDA Physical Properties: Shear modulus 6400.0 ksi (44126.4 MPa)Machinability Rating
85 %
CDA Fabrication Properties: Rating relative to Free-Cutting Brass (C36000 = 100%).Forgeability Rating
65 —
CDA Fabrication Properties: Relative forgeability rating.Showing 36 of 36 conditions
| Product Form | Temper / Condition | Section Size | Tensile (UTS) | Yield Strength | Elongation | Shear Strength | Fatigue Strength | Hardness (Scales Preserved) | Status |
|---|---|---|---|---|---|---|---|---|---|
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 262 MPa (TYPICAL)Section Size: 0.25; Cold Work: 20%; Section Size: 0.25 inCopper Development Association (CDA) — Elongation: 18 % (TYPICAL)Section Size: 0.25; Cold Work: 20%; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | 262 MPa | — | 18 % | — | — | — | VERIFIED |
| Rod | 1/2 Hard (H02)Source values and qualifiersRockwell B Hardness: 43 HRB (TYPICAL)Section Size: 0.25; Cold Work: 20%; Section Size: 0.25 inCopper Development Association (CDA) — Shear Strength: 179.3 MPa (TYPICAL)Section Size: 0.25; Cold Work: 20%; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | — | — | — | 179.3 MPa | — | 43 HRB | VERIFIED |
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 262 MPa (TYPICAL)Section Size: .0625; Section Size: .0625 inCopper Development Association (CDA) — Elongation: 8 % (TYPICAL)Section Size: .0625; Section Size: .0625 inCopper Development Association (CDA) — | .0625 | 262 MPa | — | 8 % | — | — | — | VERIFIED |
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 289.6 MPa (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 275.8 MPa (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 25 % (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 inCopper Development Association (CDA) — Tensile Strength: 289.6 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 275.8 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 25 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — | 1 | 289.6 MPa | 275.8 MPa | 25 % | — | — | — | VERIFIED |
| Rod | 1/2 Hard (H02)Source values and qualifiersRockwell B Hardness: 42 HRB (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 inCopper Development Association (CDA) — Shear Strength: 172.4 MPa (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 inCopper Development Association (CDA) — | 1 | — | — | — | 172.4 MPa | — | 42 HRB | VERIFIED |
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 262 MPa (TYPICAL)Section Size: .25; Section Size: .25 inCopper Development Association (CDA) — Elongation: 12 % (TYPICAL)Section Size: .25; Section Size: .25 inCopper Development Association (CDA) — | .25 | 262 MPa | — | 12 % | — | — | — | VERIFIED |
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 289.6 MPa (TYPICAL)Section Size: 2; Section Size: 2 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 268.9 MPa (TYPICAL)Section Size: 2; Section Size: 2 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 35 % (TYPICAL)Section Size: 2; Section Size: 2 inCopper Development Association (CDA) — Tensile Strength: 289.6 MPa (TYPICAL)Section Size: 2; Cold Work: 15%; Section Size: 2 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 268.9 MPa (TYPICAL)Section Size: 2; Cold Work: 15%; Section Size: 2 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 35 % (TYPICAL)Section Size: 2; Cold Work: 15%; Section Size: 2 inCopper Development Association (CDA) — | 2 | 289.6 MPa | 268.9 MPa | 35 % | — | — | — | VERIFIED |
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 296.5 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 275.8 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Tensile Strength: 296.5 MPa (TYPICAL)Section Size: 0.5; Cold Work: 20%; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 275.8 MPa (TYPICAL)Section Size: 0.5; Cold Work: 20%; Section Size: 0.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 0.5; Cold Work: 20%; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | 296.5 MPa | 275.8 MPa | 20 % | — | — | — | VERIFIED |
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 296.5 MPa (TYPICAL)Section Size: 0.24; Section Size: 0.24 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 275.8 MPa (TYPICAL)Section Size: 0.24; Section Size: 0.24 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 18 % (TYPICAL)Section Size: 0.24; Section Size: 0.24 inCopper Development Association (CDA) — | 0.24 | 296.5 MPa | 275.8 MPa | 18 % | — | — | — | VERIFIED |
| Rod | 1/2 Hard (H02)Source values and qualifiersShear Strength: 172.4 MPa (TYPICAL)Section Size: 2; Cold Work: 15%; Section Size: 2 inCopper Development Association (CDA) — | 2 | — | — | — | 172.4 MPa | — | — | VERIFIED |
| Rod | 1/2 Hard (H02)Source values and qualifiersRockwell B Hardness: 43 HRB (TYPICAL)Section Size: 0.5; Cold Work: 20%; Section Size: 0.5 inCopper Development Association (CDA) — Rockwell 30T Hardness: 50 HR30T (TYPICAL)Section Size: 0.5; Cold Work: 20%; Section Size: 0.5 inCopper Development Association (CDA) — Shear Strength: 179.3 MPa (TYPICAL)Section Size: 0.5; Cold Work: 20%; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | — | — | — | 179.3 MPa | — | 43 HRB50 HR30T | VERIFIED |
| Rod | 1/8 Hard (H00) · 20 °CSource values and qualifiersTensile Strength: 262 MPa (TYPICAL)Section Size: 0.5; Cold Work: 6%; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 206.8 MPa (TYPICAL)Section Size: 0.5; Cold Work: 6%; Section Size: 0.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 26 % (TYPICAL)Section Size: 0.5; Cold Work: 6%; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | 262 MPa | 206.8 MPa | 26 % | — | — | — | VERIFIED |
| Rod | 1/8 Hard (H00)Source values and qualifiersRockwell B Hardness: 36 HRB (TYPICAL)Section Size: 0.5; Cold Work: 6%; Section Size: 0.5 inCopper Development Association (CDA) — Rockwell 30T Hardness: 44 HR30T (TYPICAL)Section Size: 0.5; Cold Work: 6%; Section Size: 0.5 inCopper Development Association (CDA) — Shear Strength: 172.4 MPa (TYPICAL)Section Size: 0.5; Cold Work: 6%; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | — | — | — | 172.4 MPa | — | 36 HRB44 HR30T | VERIFIED |
| Rod | Hard (H04) · 20 °CSource values and qualifiersTensile Strength: 365.4 MPa (TYPICAL)Section Size: 0.24; Section Size: 0.24 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 337.8 MPa (TYPICAL)Section Size: 0.24; Section Size: 0.24 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 10 % (TYPICAL)Section Size: 0.24; Section Size: 0.24 inCopper Development Association (CDA) — | 0.24 | 365.4 MPa | 337.8 MPa | 10 % | — | — | — | VERIFIED |
| Rod | Hard (H04) · 20 °CSource values and qualifiersTensile Strength: 330.9 MPa (TYPICAL)Section Size: 0.5; Cold Work: 35%; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 303.4 MPa (TYPICAL)Section Size: 0.5; Cold Work: 35%; Section Size: 0.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 15 % (TYPICAL)Section Size: 0.5; Cold Work: 35%; Section Size: 0.5 inCopper Development Association (CDA) — Tensile Strength: 330.9 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 303.4 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 15 % (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | 330.9 MPa | 303.4 MPa | 15 % | — | — | — | VERIFIED |
| Rod | Hard (H04)Source values and qualifiersRockwell B Hardness: 48 HRB (TYPICAL)Section Size: 0.5; Cold Work: 35%; Section Size: 0.5 inCopper Development Association (CDA) — Shear Strength: 186.2 MPa (TYPICAL)Section Size: 0.5; Cold Work: 35%; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | — | — | — | 186.2 MPa | — | 48 HRB | VERIFIED |
| Rod | Hard (H04) · 20 °CSource values and qualifiersTensile Strength: 330.9 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 303.4 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Tensile Strength: 330.9 MPa (TYPICAL)Section Size: 1; Cold Work: 35%; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 303.4 MPa (TYPICAL)Section Size: 1; Cold Work: 35%; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 1; Cold Work: 35%; Section Size: 1 inCopper Development Association (CDA) — | 1 | 330.9 MPa | 303.4 MPa | 20 % | — | — | — | VERIFIED |
| Rod | Hard (H04) · 20 °CSource values and qualifiersTensile Strength: 365.4 MPa (TYPICAL)Section Size: 0.25; Cold Work: 45%; Section Size: 0.25 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 337.8 MPa (TYPICAL)Section Size: 0.25; Cold Work: 45%; Section Size: 0.25 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 10 % (TYPICAL)Section Size: 0.25; Cold Work: 45%; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | 365.4 MPa | 337.8 MPa | 10 % | — | — | — | VERIFIED |
| Rod | Hard (H04)Source values and qualifiersRockwell B Hardness: 54 HRB (TYPICAL)Section Size: 0.25; Cold Work: 45%; Section Size: 0.25 inCopper Development Association (CDA) — Shear Strength: 199.9 MPa (TYPICAL)Section Size: 0.25; Cold Work: 45%; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | — | — | — | 199.9 MPa | — | 54 HRB | VERIFIED |
| Rod | Hard (H04)Source values and qualifiersRockwell B Hardness: 48 HRB (TYPICAL)Section Size: 1; Cold Work: 35%; Section Size: 1 inCopper Development Association (CDA) — Shear Strength: 186.2 MPa (TYPICAL)Section Size: 1; Cold Work: 35%; Section Size: 1 inCopper Development Association (CDA) — | 1 | — | — | — | 186.2 MPa | — | 48 HRB | VERIFIED |
| Rod | Nominal Grain Size 0.015 mm (OS015) · 20 °CSource values and qualifiersTensile Strength: 227.5 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 75.8 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 46 % (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Tensile Strength: 227.5 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 75.8 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 46 % (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | 227.5 MPa | 75.8 MPa | 46 % | — | — | — | VERIFIED |
| Rod | Nominal Grain Size 0.015 mm (OS015)Source values and qualifiersRockwell F Hardness: 43 HRF (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Shear Strength: 151.7 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | — | — | — | 151.7 MPa | — | 43 HRF | VERIFIED |
| Rod | Nominal Grain Size 0.050 mm (OS050) · 20 °CSource values and qualifiersTensile Strength: 220.6 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 68.9 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 50 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Tensile Strength: 220.6 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 68.9 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 50 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — | 1 | 220.6 MPa | 68.9 MPa | 50 % | — | — | — | VERIFIED |
| Rod | Nominal Grain Size 0.050 mm (OS050)Source values and qualifiersRockwell F Hardness: 40 HRF (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Shear Strength: 151.7 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — | 1 | — | — | — | 151.7 MPa | — | 40 HRF | VERIFIED |
| Tube | Light Drawn, Light Cold Rolled (H55) · 20 °CSource values and qualifiersTensile Strength: 275.8 MPa (TYPICAL)Section Size: 0.065; Cold Work: 15%; Section Size: 0.065 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 220.6 MPa (TYPICAL)Section Size: 0.065; Cold Work: 15%; Section Size: 0.065 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 0.065; Cold Work: 15%; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | 275.8 MPa | 220.6 MPa | 20 % | — | — | — | VERIFIED |
| Tube | Light Drawn, Light Cold Rolled (H55)Source values and qualifiersRockwell B Hardness: 35 HRB (TYPICAL)Section Size: 0.065; Cold Work: 15%; Section Size: 0.065 inCopper Development Association (CDA) — Shear Strength: 165.5 MPa (TYPICAL)Section Size: 0.065; Cold Work: 15%; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | — | — | — | 165.5 MPa | — | 35 HRB | VERIFIED |
| Tube | Nominal Grain Size 0.050 mm (OS050) · 20 °CSource values and qualifiersTensile Strength: 220.6 MPa (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 68.9 MPa (TYPICAL)Section Size: 0.065; Section Size: 0.065 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 40 % (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | 220.6 MPa | 68.9 MPa | 40 % | — | — | — | VERIFIED |
| Tube | Nominal Grain Size 0.050 mm (OS050)Source values and qualifiersRockwell F Hardness: 40 HRF (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — Shear Strength: 151.7 MPa (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | — | — | — | 151.7 MPa | — | 40 HRF | VERIFIED |
| Wire | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 351.6 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 282.7 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 6 % (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — | 0.08 | 351.6 MPa | 282.7 MPa | 6 % | — | — | — | VERIFIED |
| Wire | 1/2 Hard (H02)Source values and qualifiersShear Strength: 186.2 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — | 0.08 | — | — | — | 186.2 MPa | — | — | VERIFIED |
| Wire | 1/8 Hard (H00) · 20 °CSource values and qualifiersTensile Strength: 262 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 206.8 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — | 0.08 | 262 MPa | 206.8 MPa | 20 % | — | — | — | VERIFIED |
| Wire | 1/8 Hard (H00)Source values and qualifiersShear Strength: 172.4 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — | 0.08 | — | — | — | 172.4 MPa | — | — | VERIFIED |
| Wire | Hard (H04) · 20 °CSource values and qualifiersTensile Strength: 386.1 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 351.6 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 3 % (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — | 0.08 | 386.1 MPa | 351.6 MPa | 3 % | — | — | — | VERIFIED |
| Wire | Hard (H04)Source values and qualifiersShear Strength: 206.8 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — | 0.08 | — | — | — | 206.8 MPa | — | — | VERIFIED |
| Wire | Nominal Grain Size 0.035 mm (OS035) · 20 °CSource values and qualifiersTensile Strength: 227.5 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 75.8 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 40 % (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — | 0.08 | 227.5 MPa | 75.8 MPa | 40 % | — | — | — | VERIFIED |
| Wire | Nominal Grain Size 0.035 mm (OS035)Source values and qualifiersShear Strength: 151.7 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — | 0.08 | — | — | — | 151.7 MPa | — | — | VERIFIED |
Hardness Integrity Notice: Rockwell B (HRB), Rockwell F (HRF), and Superficial 30T (HR30T) scales are reported on their measured scales without cross-scale mathematical conversion.
Source: See fact-level citations
Processing & Fabrication Characteristics
Machining, joining, forming, and thermal processing ratings cataloged from the cited authoritative technical reference.
Machinability
Machinability rating: 85% relative to free-cutting brass (C36000 = 100%). Forgeability rating: 65.
Weldability & Joining
Soldering: Excellent; Brazing: Good; Oxyacetylene Welding: Fair; Gas Shielded Arc Welding: Fair; Coated Metal Arc Welding: Not Recommended; Spot Weld: Not Recommended; Seam Weld: Not Recommended; Butt Weld: Fair
Heat Treatment & Working Ranges
Annealing temperature range: 426.7°C to 648.9°C (800°F - 1200°F). Hot working temperature range: 760.0°C to 871.1°C (1400°F - 1600°F).
Forming & Cold Working
Capacity for Being Cold Worked: Good. Capacity for Being Hot Formed: Good.
Comparable Grades & Cross-References
Carefully classified cross-reference relationships for C14500 Tellurium Copper. Comparable does not mean equivalent.
| Related Material | Family | Relationship Classification | Metallurgical Notes & Differences | Status | Action |
|---|---|---|---|---|---|
| C14700 Sulfur Copper | Copper Alloys | Close Equivalent | C14500 (tellurium-bearing) and C14700 (sulfur-bearing) both deliver 85% machinability rating and 90-93% IACS conductivity for automated screw-machined electrical parts.Direct commercial substitution is generally permissible subject to certified Mill Test Report (MTR) confirmation for critical applications. | VERIFIED | Side-by-Side Compare → |
| C11000 ETP Copper | Copper Alloys | Commonly Compared | C14500 provides 85% machinability rating and 93% IACS conductivity for high-speed CNC turning, whereas C11000 provides 101% IACS but only 20% machinability rating.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost). | VERIFIED | Side-by-Side Compare → |
| C36000 Free-Cutting Brass | Copper Alloys | Commonly Compared | C14500 offers 93% IACS electrical conductivity with 85% machinability rating, whereas C36000 offers 100% machinability but only 28% IACS conductivity.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost). | VERIFIED | Side-by-Side Compare → |
Sources & Provenance Trail
Reference publications and standards organization registers cited across this material record.
Copper Development Association Inc.CDA Alloy C14500 Property & Specification Profile
AUTHORITATIVE BODY
Copper Development Association authoritative technical reference profile for C14500 Tellurium Copper.
Issuing Body: Copper Development Association (CDA)View Source Record ↗
Copper Development Association Inc.CDA UNS Standard Designations Register (C14500)
AUTHORITATIVE BODY
Unified Numbering System (UNS) designation registration register confirming active C14500 status.
Issuing Body: Copper Development Association (CDA)View Source Record ↗
Intellectual Property & Provenance Notice: Mat Grades cites technical literature from recognized industry associations and standards organizations. Underlying technical standards and publication data remain the intellectual property of their respective issuing organizations.