Material Comparison Engine

Compare verified materials with source-specific conditions, units, and property limits.

Material A (Baseline)

Heat Treatment / Temper Context:

Material B (Comparison)

Heat Treatment / Temper Context:

Temper & Metallurgical Context Qualification:The selected records contain different or missing source contexts. Values shown in separate rows are not directly matched. Typical and estimated values are not guaranteed minima; matching context alone does not establish interchangeability.

1. Identity, Classification & Standards

Parameter	C51000 Phosphor Bronze 5% A	C52100 Phosphor Bronze 8% C
Material Family	Copper Alloys	Copper Alloys
Subfamily	Phosphor Bronze	Phosphor Bronze
UNS Designation	C51000	C52100
COMMERCIAL Designation	Phosphor Bronze Grade A	Phosphor Bronze Grade C
CDA Designation	Alloy 510	Alloy 521
SPECIFICATION Designation	ASTM B139/B139M	ASTM B139/B139M

2. Chemical Composition Limits (wt %)Source-specific limits and typical values

Element	C51000 Phosphor Bronze 5% A	C52100 Phosphor Bronze 8% C
Cu (Copper)	Bal.	Bal.
Pb (Lead)	≤ 0.05%	≤ 0.05%
Sn (Tin)	4.2 – 5.8%	7 – 9%
Zn (Zinc)	≤ 0.3%	≤ 0.2%
Fe (Iron)	≤ 0.1%	≤ 0.1%
P (Phosphorus)	0.03 – 0.35%	0.03 – 0.35%

3. Physical Properties

Property	C51000 Phosphor Bronze 5% A	C52100 Phosphor Bronze 8% C
Density · TYPICAL · 20 °CUnit: g/cm³	8.858 g/cm³	8.802 g/cm³

4. Contextual Mechanical PropertiesUnit: SI

Mechanical Parameter	C51000 Phosphor Bronze 5% A1/2 Hard (H02)	C52100 Phosphor Bronze 8% C1/2 Hard (H02)
Modulus of Elasticity (Tension) · TYPICALUnit: GPa	110.3 GPa	110.3 GPa
Modulus of Rigidity · TYPICALUnit: MPa	41368.5 MPa	41368.5 MPa
Machinability Rating · TYPICALUnit: %	20 %	20 %
Tensile Strength · Flat Products · 1/2 Hard (H02) · TYPICAL · 20 °CUnit: MPa	455.1 MPa	— MPa
Tensile Strength · Rod · 1 · 1/2 Hard (H02) · TYPICAL · 20 °CUnit: MPa	482.6 MPa	— MPa
Tensile Strength · Rod · 0.5 · 1/2 Hard (H02) · TYPICAL · 20 °CUnit: MPa	517.1 MPa	551.6 MPa
Tensile Strength · Wire · 0.08 · 1/2 Hard (H02) · TYPICAL · 20 °CUnit: MPa	586.1 MPa	723.9 MPa
Tensile Strength · Flat Products · 0.04 · 1/2 Hard (H02) · TYPICAL · 20 °CUnit: MPa	— MPa	530.9 MPa
Yield Strength (0.5% Ext) · Flat Products · 1/2 Hard (H02) · TYPICAL · 20 °CUnit: MPa	372.3 MPa	— MPa
Yield Strength (0.5% Ext) · Rod · 0.5 · 1/2 Hard (H02) · TYPICAL · 20 °CUnit: MPa	448.2 MPa	— MPa
Yield Strength (0.5% Ext) · Flat Products · 0.04 · 1/2 Hard (H02) · TYPICAL · 20 °CUnit: MPa	— MPa	441.3 MPa
Elongation · Flat Products · 1/2 Hard (H02) · TYPICAL · 20 °CUnit: %	24 %	— %
Elongation · Rod · 1 · 1/2 Hard (H02) · TYPICAL · 20 °CUnit: %	25 %	— %
Elongation · Rod · 0.5 · 1/2 Hard (H02) · TYPICAL · 20 °CUnit: %	25 %	33 %
Elongation · Wire · 0.08 · 1/2 Hard (H02) · TYPICAL · 20 °CUnit: %	8 %	— %
Elongation · Flat Products · 0.04 · 1/2 Hard (H02) · TYPICAL · 20 °CUnit: %	— %	34 %

5. Electrical & Thermal Conductive Properties

Property	C51000 Phosphor Bronze 5% A	C52100 Phosphor Bronze 8% C
Electrical Conductivity · TYPICAL · 20 °CCategory: ELECTRICAL • Unit: % IACS	15 % IACS	13 % IACS
Liquidus Temperature · TYPICALCategory: THERMAL • Unit: °C	1048.9 °C	1026.7 °C
Solidus Temperature · TYPICALCategory: THERMAL • Unit: °C	954.4 °C	882.2 °C
Thermal Conductivity · TYPICAL · 20 °CCategory: THERMAL • Unit: W/(m·K)	69.23 W/(m·K)	62.31 W/(m·K)
Coefficient of Thermal Expansion (CTE) · TYPICALCategory: THERMAL • Unit: µm/(m·K)	17.82 µm/(m·K)	18.18 µm/(m·K)
Specific Heat Capacity · TYPICAL · 20 °CCategory: THERMAL • Unit: J/(kg·K)	376.8 J/(kg·K)	376.8 J/(kg·K)
Annealing Temperature Range · RANGECategory: THERMAL • Unit: °C	482.2–676.7 °C	482.2–676.7 °C

6. Hardness Evaluation (Discrete Scales Preserved)No cross-scale mathematical conversion

Hardness Scale	C51000 Phosphor Bronze 5% A	C52100 Phosphor Bronze 8% C
Rockwell B Hardness · Flat Products · 1/2 Hard (H02) · TYPICAL	78 HRB	—
Rockwell B Hardness · Rod · 1 · 1/2 Hard (H02) · TYPICAL	78 HRB	—
Rockwell B Hardness · Rod · 0.5 · 1/2 Hard (H02) · TYPICAL	80 HRB	85 HRB
Rockwell B Hardness · Flat Products · 0.04 · 1/2 Hard (H02) · TYPICAL	—	84 HRB
Rockwell 30T Hardness · Flat Products · 1/2 Hard (H02) · TYPICAL	69 HR30T	—
Rockwell 30T Hardness · Flat Products · 0.04 · 1/2 Hard (H02) · TYPICAL	—	73 HR30T

7. Fabrication & Processing Comparison

C51000 Phosphor Bronze 5% A Characteristics:

Machinability: Machinability rating: 20% relative to free-cutting brass (C36000 = 100%).

Weldability: Soldering: Excellent; Brazing: Excellent; Oxyacetylene Welding: Fair; Gas Shielded Arc Welding: Good; Coated Metal Arc Welding: Fair; Spot Weld: Good; Seam Weld: Fair; Butt Weld: Excellent

Formability / Cold Working: Capacity for Being Cold Worked: Excellent. Capacity for Being Hot Formed: Poor.

Heat Treatment & Annealing: Annealing temperature range: 482.2°C to 676.7°C (900°F - 1250°F).

C52100 Phosphor Bronze 8% C Characteristics:

Machinability: Machinability rating: 20% relative to free-cutting brass (C36000 = 100%).

Formability / Cold Working: Capacity for Being Cold Worked: Good. Capacity for Being Hot Formed: Poor.

Heat Treatment & Annealing: Annealing temperature range: 482.2°C to 676.7°C (900°F - 1250°F).

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