VERIFIED(CDA Source-Verified)

202 Stainless Steel

Primary Designation:TYPE 202

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.

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Data Completeness & Record Integrity:8 composition elements and 7 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

7.8 g/cm³TYPICAL · temperature not stated

Composition Excerpt

C ≤ 0.15 wt%Carbon (max)

Standard Elemental Basis: MAX

Engineering Summary

202 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	202	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
202	202 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 202.Ref: Metallus	VERIFIED
Manganese	Mn	25	RANGE	7.50 – 10.00	wt%	Source cell: 7.5/10.0. Scope: p22, Type 202.Ref: Metallus	VERIFIED
Silicon	Si	14	MAXIMUM	≤ 1.00	wt%	Source cell: 1.00max. Scope: p22, Type 202.Ref: Metallus	VERIFIED
Phosphorus	P	15	MAXIMUM	≤ 0.06	wt%	Source cell: .060max. Scope: p22, Type 202.Ref: Metallus	VERIFIED
Sulfur	S	16	MAXIMUM	≤ 0.03	wt%	Source cell: .030max. Scope: p22, Type 202.Ref: Metallus	VERIFIED
Chromium	Cr	24	RANGE	17.00 – 19.00	wt%	Source cell: 17.00/19.00. Scope: p22, Type 202.Ref: Metallus	VERIFIED
Nickel	Ni	28	RANGE	4.00 – 6.00	wt%	Source cell: 4.00/6.00. Scope: p22, Type 202.Ref: Metallus	VERIFIED
Nitrogen	N	7	MAXIMUM	≤ 0.25	wt%	Source cell: .25max. Scope: p22, Type 202.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.

3 Parameters

Property Parameter	Canonical SI Value	Semantic Basis	Source Raw Reference	Source Reference	Status
Density	7.8 g/cm³	TYPICAL	7.80 g/cm3	ATI (Allegheny Technologies Incorporated)	VERIFIED
Elastic Modulus	197 GPa	TYPICAL	197 GPa	ATI (Allegheny Technologies Incorporated)	VERIFIED
Poisson's Ratio	0.3 dimensionless	TYPICAL	0.30 dimensionless	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.

Temper / Condition:

Showing 4 of 4 conditions

Product Form	Temper / Condition	Section Size	Tensile (UTS)	Yield Strength	Elongation	Shear Strength	Fatigue Strength	Hardness (Scales Preserved)	Status
Sheet and Strip	Annealed · Annealed Source values and qualifiers Ultimate Tensile Strength: ≥ 620 MPa (MINIMUM)ASTM A240ATI (Allegheny Technologies Incorporated) — ATI 202 Datasheet, Mechanical Properties Table	—	≥ 620 MPa	—	—	—	—	—	VERIFIED
Sheet and Strip	Annealed · Annealed Source values and qualifiers Yield Strength: ≥ 310 MPa (MINIMUM)ASTM A240 (0.2% offset)ATI (Allegheny Technologies Incorporated) — ATI 202 Datasheet, Mechanical Properties Table	—	—	≥ 310 MPa	—	—	—	—	VERIFIED
Sheet and Strip	Annealed · Annealed Source values and qualifiers Elongation at Break: ≥ 40 % (MINIMUM)ASTM A240ATI (Allegheny Technologies Incorporated) — ATI 202 Datasheet, Mechanical Properties Table	— · in 50 mm (2 in)	—	—	≥ 40 %	—	—	—	VERIFIED
Sheet and Strip	Annealed Source values and qualifiers HB Hardness: ≤ 241 HB (MAXIMUM)ATI (Allegheny Technologies Incorporated) — ATI 202 Datasheet, Mechanical Properties Table	—	—	—	—	—	—	≤ 241 HB	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.

Issuing Body: MetallusRevision: 19th edition, 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.