301 Stainless Steel
Primary Designation:TYPE 301
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:8 composition elements and 19 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
7.88 g/cm³TYPICAL · temperature not stated
Thermal Conductivity
16.3 W/(m·K)TYPICAL · at 100 °C
Composition Excerpt
C ≤ 0.15 wt%Carbon (max)
Standard Elemental Basis: MAXEngineering Summary
301 Stainless Steel. Source-scoped engineering data is shown with its reported limits and conditions. Unreported properties are not inferred.
Recognized Aliases
Source-backed commercial trade name and short designations cataloged in canonical data.
Standard Designations & Applicable Specifications
Semantically classified designations distinguishing primary standard identifiers, commercial trade names, and applicable specification references.
Direct Standard DesignationsDIRECT DESIGNATION
1 Primary Identifier| System | Identifier | Standard System Name | Classification Notes & Provenance |
|---|---|---|---|
| TYPEPRIMARY | 301 | Producer-referenced stainless type | —Ref: Practical Data for Metallurgists, 19th edition |
Applicable Specifications & Product Form ReferencesSPECIFICATION REFERENCE
1 Applicable Standards| Standards Body | Specification Code | Specification Title / Scope | Relationship Type |
|---|---|---|---|
| 301 | 301 Stainless Steel Engineering Datasheet | Applicable specification reference. | 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 |
|---|---|---|---|---|---|---|---|
| Carbon | C | 6 | MAXIMUM | ≤ 0.15 | wt% | Source cell: .15max. Scope: p22, Type 301.Ref: Metallus | VERIFIED |
| Manganese | Mn | 25 | MAXIMUM | ≤ 2.00 | wt% | Source cell: 2.00max. Scope: p22, Type 301.Ref: Metallus | VERIFIED |
| Silicon | Si | 14 | MAXIMUM | ≤ 1.00 | wt% | Source cell: 1.00max. Scope: p22, Type 301.Ref: Metallus | VERIFIED |
| Phosphorus | P | 15 | MAXIMUM | ≤ 0.04 | wt% | Source cell: .045max. Scope: p22, Type 301.Ref: Metallus | VERIFIED |
| Sulfur | S | 16 | MAXIMUM | ≤ 0.03 | wt% | Source cell: .030max. Scope: p22, Type 301.Ref: Metallus | VERIFIED |
| Chromium | Cr | 24 | RANGE | 16.00 – 18.00 | wt% | Source cell: 16.00/18.00. Scope: p22, Type 301.Ref: Metallus | VERIFIED |
| Nickel | Ni | 28 | RANGE | 6.00 – 8.00 | wt% | Source cell: 6.00/8.00. Scope: p22, Type 301.Ref: Metallus | VERIFIED |
| Nitrogen | N | 7 | MAXIMUM | ≤ 0.10 | wt% | Source cell: .10max. Scope: p22, Type 301.Ref: Metallus | 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 | 7.88 g/cm³ | TYPICAL | 7.88 g/cm3 | ATI (Allegheny Technologies Incorporated) | VERIFIED | |
| Elastic Modulus | 193 GPa | TYPICAL | 193 GPa | ATI (Allegheny Technologies Incorporated) | VERIFIED | |
| Poisson's Ratio | 0.29 dimensionless | TYPICAL | 0.29 dimensionless | ATI (Allegheny Technologies Incorporated) | 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 |
|---|---|---|---|---|---|---|
| Coefficient of Thermal Expansion | 16.9 µm/(m·K) | TYPICAL | Test Temp: 100 °C | 16.9 10^-6/K | ATI (Allegheny Technologies Incorporated) | VERIFIED |
| Thermal Conductivity | 16.3 W/(m·K) | TYPICAL | Test Temp: 100 °C | 16.3 W/(m·K) | ATI (Allegheny Technologies Incorporated) | 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 Resistivity | 720 nΩ·m | TYPICAL | 72 µΩ·cm | ATI (Allegheny Technologies Incorporated) | 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.
Showing 13 of 13 conditions
| Product Form | Temper / Condition | Section Size | Tensile (UTS) | Yield Strength | Elongation | Shear Strength | Fatigue Strength | Hardness (Scales Preserved) | Status |
|---|---|---|---|---|---|---|---|---|---|
| Sheet and Strip | Annealed · AnnealedSource values and qualifiersUltimate Tensile Strength: ≥ 758 MPa (MINIMUM)ASTM A666ATI (Allegheny Technologies Incorporated) — ATI 301 Datasheet, Table 2 (Annealed Mechanical Properties) | — | ≥ 758 MPa | — | — | — | — | — | VERIFIED |
| Sheet and Strip | Annealed · AnnealedSource values and qualifiersYield Strength: ≥ 276 MPa (MINIMUM)ASTM A666 (0.2% offset)ATI (Allegheny Technologies Incorporated) — ATI 301 Datasheet, Table 2 (Annealed Mechanical Properties) | — | — | ≥ 276 MPa | — | — | — | — | VERIFIED |
| Sheet and Strip | Annealed · AnnealedSource values and qualifiersElongation at Break: ≥ 40 % (MINIMUM)ASTM A666ATI (Allegheny Technologies Incorporated) — ATI 301 Datasheet, Table 2 (Annealed Mechanical Properties) | — · in 50 mm (2 in) | — | — | ≥ 40 % | — | — | — | VERIFIED |
| Sheet and Strip | 1/4 Hard Temper · Cold Rolled 1/4 HardSource values and qualifiersUltimate Tensile Strength: ≥ 862 MPa (MINIMUM)ASTM A666ATI (Allegheny Technologies Incorporated) — ATI 301 Datasheet, Table 3 (Cold Worked Tempers) | — | ≥ 862 MPa | — | — | — | — | — | VERIFIED |
| Sheet and Strip | 1/4 Hard Temper · Cold Rolled 1/4 HardSource values and qualifiersYield Strength: ≥ 517 MPa (MINIMUM)ASTM A666 (0.2% offset)ATI (Allegheny Technologies Incorporated) — ATI 301 Datasheet, Table 3 (Cold Worked Tempers) | — | — | ≥ 517 MPa | — | — | — | — | VERIFIED |
| Sheet and Strip | 1/4 Hard Temper · Cold Rolled 1/4 HardSource values and qualifiersElongation at Break: ≥ 25 % (MINIMUM)ASTM A666ATI (Allegheny Technologies Incorporated) — ATI 301 Datasheet, Table 3 (Cold Worked Tempers) | — · in 50 mm (2 in) | — | — | ≥ 25 % | — | — | — | VERIFIED |
| Sheet and Strip | 1/2 Hard Temper · Cold Rolled 1/2 HardSource values and qualifiersUltimate Tensile Strength: ≥ 1034 MPa (MINIMUM)ASTM A666ATI (Allegheny Technologies Incorporated) — ATI 301 Datasheet, Table 3 (Cold Worked Tempers) | — | ≥ 1034 MPa | — | — | — | — | — | VERIFIED |
| Sheet and Strip | 1/2 Hard Temper · Cold Rolled 1/2 HardSource values and qualifiersYield Strength: ≥ 758 MPa (MINIMUM)ASTM A666 (0.2% offset)ATI (Allegheny Technologies Incorporated) — ATI 301 Datasheet, Table 3 (Cold Worked Tempers) | — | — | ≥ 758 MPa | — | — | — | — | VERIFIED |
| Sheet and Strip | 1/2 Hard Temper · Cold Rolled 1/2 HardSource values and qualifiersElongation at Break: ≥ 15 % (MINIMUM)ASTM A666ATI (Allegheny Technologies Incorporated) — ATI 301 Datasheet, Table 3 (Cold Worked Tempers) | — · in 50 mm (2 in) | — | — | ≥ 15 % | — | — | — | VERIFIED |
| Sheet and Strip | Full Hard Temper · Cold Rolled Full HardSource values and qualifiersUltimate Tensile Strength: ≥ 1276 MPa (MINIMUM)ASTM A666ATI (Allegheny Technologies Incorporated) — ATI 301 Datasheet, Table 3 (Cold Worked Tempers) | — | ≥ 1276 MPa | — | — | — | — | — | VERIFIED |
| Sheet and Strip | Full Hard Temper · Cold Rolled Full HardSource values and qualifiersYield Strength: ≥ 965 MPa (MINIMUM)ASTM A666 (0.2% offset)ATI (Allegheny Technologies Incorporated) — ATI 301 Datasheet, Table 3 (Cold Worked Tempers) | — | — | ≥ 965 MPa | — | — | — | — | VERIFIED |
| Sheet and Strip | Full Hard Temper · Cold Rolled Full HardSource values and qualifiersElongation at Break: ≥ 8 % (MINIMUM)ASTM A666ATI (Allegheny Technologies Incorporated) — ATI 301 Datasheet, Table 3 (Cold Worked Tempers) | — · in 50 mm (2 in) | — | — | ≥ 8 % | — | — | — | VERIFIED |
| Sheet and Strip | AnnealedSource values and qualifiersHRB Hardness: ≤ 95 HRB (MAXIMUM)ATI (Allegheny Technologies Incorporated) — ATI 301 Datasheet, Table 2 (Annealed Mechanical Properties) | — | — | — | — | — | — | ≤ 95 HRB | 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
Sources & Provenance Trail
Reference publications and standards organization registers cited across this material record.
MetallusPractical Data for Metallurgists, 19th edition
PRIMARY PRODUCER
Reviewed factual transcription; source document SHA-256 is recorded in the capture metadata. No cross-standard equivalence is asserted.
ATI (Allegheny Technologies Incorporated)ATI Technical Data Sheets: Stainless Steel Engineering Specifications
PRIMARY PRODUCER
Reviewed factual transcription from primary producer engineering datasheet.
Issuing Body: ATI (Allegheny Technologies Incorporated)Revision: Technical Datasheet Series Rev 2024View Source Record ↗
ATI (Allegheny Technologies Incorporated)ATI Technical Data Sheets: Stainless Steel Engineering Specifications
PRIMARY PRODUCER
Reviewed factual transcription from primary producer engineering datasheet.
Issuing Body: ATI (Allegheny Technologies Incorporated)Revision: Technical Datasheet Series Rev 2024View Source Record ↗
ATI (Allegheny Technologies Incorporated)ATI Technical Data Sheets: Stainless Steel Engineering Specifications
PRIMARY PRODUCER
Reviewed factual transcription from primary producer engineering datasheet.
Issuing Body: ATI (Allegheny Technologies Incorporated)Revision: Technical Datasheet Series Rev 2024View Source Record ↗
ATI (Allegheny Technologies Incorporated)ATI Technical Data Sheets: Stainless Steel Engineering Specifications
PRIMARY PRODUCER
Reviewed factual transcription from primary producer engineering datasheet.
Issuing Body: ATI (Allegheny Technologies Incorporated)Revision: Technical Datasheet Series Rev 2024View Source Record ↗
ATI (Allegheny Technologies Incorporated)ATI Technical Data Sheets: Stainless Steel Engineering Specifications
PRIMARY PRODUCER
Reviewed factual transcription from primary producer engineering datasheet.
Issuing Body: ATI (Allegheny Technologies Incorporated)Revision: Technical Datasheet Series Rev 2024View Source Record ↗
ATI (Allegheny Technologies Incorporated)ATI Technical Data Sheets: Stainless Steel Engineering Specifications
PRIMARY PRODUCER
Reviewed factual transcription from primary producer engineering datasheet.
Issuing Body: ATI (Allegheny Technologies Incorporated)Revision: Technical Datasheet Series Rev 2024View 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.