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AEROSPACE
MATERIAL
SPECIFICATION
AMS5912B
Issued 1992-01
Revised 2009-04
Superseding AMS5912A
Steel, Corrosion-Resistant, Sheet and Strip
19Cr - 9.2Ni (SAE 30304)
Cold Rolled, 3/4 Hard, 175 ksi (1207 MPa) Tensile Strength
(Composition similar to UNS S30400)
RATIONALE
AMS5912B revises bending (3.3.3), and is a Five Year Review and update of this specification.
1. SCOPE
1.1 Form
This specification covers a corrosion-resistant steel in the form of sheet and strip.
1.2 Application
These products have been used typically for applications requiring moderate forming and bending, but usage is not limited
to such applications.
1.2.1 Mechanical properties specified herein are obtained by cold working (strain hardening), and not by heat
treatment. Therefore, the cold-worked product should not be heated to a temperature which adversely affects the
mechanical properties or corrosion-resistance before, during, or after fabrication.
2. APPLICABLE DOCUMENTS
The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the
extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue
is specified. When the referenced document has been cancelled and no superseding document has been specified, the
last published issue of that document shall apply.
2.1 SAE Publications
Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside
USA and Canada) or 724-776-4970 (outside USA), www.sae.org.
AMS2242 Tolerances, Corrosion and Heat-Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Sheet, Strip,
and Plate
AMS2248 Chemical Check Analysis Limits, Corrosion and Heat-Resistant Steels and Alloys, Maraging and Other
Highly-Alloyed Steels, and Iron Alloys
AMS2371 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys, Wrought
Products and Forging Stock
AMS2807 Identification, Carbon and Low-Alloy Steels, Corrosion and Heat-Resistant Steels and Alloys, Sheet,
Strip, Plate, and Aircraft Tubing
SAE AMS5912B Page 2 of 5
2.2 ASTM Publications
Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959,
Tel: 610-832-9585, www.astm.org.
ASTM A 370 Mechanical Testing of Steel Products
ASTM E 290 Bend Testing of Material for Ductility
ASTM E 353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys
ASTM E 384 Microindentation Hardness of Materials
3. TECHNICAL REQUIREMENTS
3.1 Composition
Shall conform to the percentages by weight shown in Table 1, determined by wet chemical methods in accordance with
ASTM E 353, by spectrochemical methods, or by other analytical methods acceptable to purchaser.
TABLE 1 - COMPOSITION
Element min max
Carbon -- 0.08
Manganese -- 2.00
Silicon -- 1.00
Phosphorus -- 0.040
Sulfur -- 0.030
Chromium 18.00 20.00
Nickel 8.00 10.50
Molybdenum -- 0.75
Copper -- 0.75
3.1.1 Check Analysis
Composition variations shall meet the applicable requirements of AMS2248.
3.2 Condition
Solution heat treated, descaled unless solution heat treatment is performed in an atmosphere yielding a bright finish, and
cold rolled.
3.3 Properties
The product shall conform to the following requirements; tensile and hardness properties shall be determined in
accordance with ASTM A 370:
3.3.1 Tensile Properties
Shall be as shown in Table 2 for product over 0.005 inch (0.13 mm) in nominal thickness.
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SAE AMS5912B Page 3 of 5
TABLE 2A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITS
Property Value
Tensile Strength 175 ksi
Yield Strength at 0.2% Offset 135 ksi
Elongation in 2 Inches or 4D
Nominal Thickness
Over 0.005 to 0.015 Inch, incl 3%
Over 0.015 inch 5%
TABLE 2B - MINIMUM TENSILE PROPERTIES, SI UNITS
Property Value
Tensile Strength 1207 MPa
Yield Strength at 0.2% Offset 931 MPa
Elongation in 50.8 mm or 4D
Nominal Thickness
Over 0.13 to 0.38 mm, incl 3%
Over 0.38 mm 5%
3.3.2 Hardness
Shall be not lower than 37 HRC, or equivalent (See 8.2). Product shall not be rejected on the basis of hardness if the
tensile properties of 3.3.1 are acceptable, determined on specimens taken from the same sample as that with
nonconforming hardness, or from another sample with similar nonconforming hardness.
3.3.2.1 Microhardness testing in accordance with ASTM E 384 may be used for thin gages where superficial hardness
testing is impractical.
3.3.3 Bending
Product 0.050 inch (1.27 mm) and under in nominal thickness shall be tested in accordance with ASTM E 290 using
specimens prepared nominally 0.75 inch (19.0 mm) in width, with the axis of bend parallel to the direction of rolling, and
shall withstand, without cracking, when bending at room temperature through the angle indicated in Table 3 around a
diameter equal to the bend factor times the nominal thickness of the product. In case of dispute, the results of tests using
the guided bend test of ASTM E 290 shall govern.
TABLE 3 - BENDING
Nominal Thickness
Angle
degrees, min
Bend
Factor
Up to 0.050 inch (1.27 mm), incl 180 3
3.4 Quality
The product, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials
and from imperfections detrimental to usage of the product.
3.5 Tolerances
Shall conform to all applicable requirements of AMS2242.
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SAE AMS5912B Page 4 of 5
4. QUALITY ASSURANCE PROVISIONS
4.1 Responsibility for Inspection
The vendor of the product shall supply all samples for vendor's tests and shall be responsible for the performance of all
required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to
ensure that the product conforms to specified requirements.
4.2 Classification of Tests
All technical requirements are acceptance tests and shall be performed on each heat or lot as applicable.
4.3 Sampling and Testing
Shall be in accordance with AMS2371.
4.4 Reports
The vendor of the product shall furnish with each shipment a report showing the results of tests for composition of each
heat and for tensile, hardness, and bending properties of each lot, and stating that the product conforms to the other
technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS5912B, size, and
quantity.
4.5 Resampling and Retesting
Shall be in accordance with AMS2371.
5. PREPARATION FOR DELIVERY
5.1 Identification
Shall be in accordance with AMS2807.
5.2 Packaging
The product shall be prepared for shipment in accordance with commercial practice and in compliance with applicable
rules and regulations pertaining to the handling, packaging, and transportation of the product to ensure carrier acceptance
and safe delivery.
6. ACKNOWLEDGMENT
A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging
purchase orders.
7. REJECTIONS
Product not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.
8. NOTES
8.1 A change bar (|) located in the left margin is for the convenience of the user in locating areas where technical
revisions, not editorial changes, have been made to the previous issue of a document. An (R) symbol to the left of
the document title indicates a complete revision of the document, including technical revision. Change bars and (R)
are not used in original publications, nor in documents that contain editorial changes only.
8.2 Hardness conversion tables for metals are presented in ASTM E 140.
SAE AMS5912B Page 5 of 5
8.3 Terms used in AMS are clarified in ARP1917.
8.4 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; dimensions and
properties in SI units and the Celsius temperatures are shown as the approximate equivalents of the primary units
and are presented only for information.
8.5 Purchase documents should specify not less than the following:
AMS5912B
Form and size of product desired
Quantity of product desired.
8.6 Similar Specifications
MIL-S-5059, Type 304, Condition 3/4 Hard, is listed for information only and shall not be construed as an acceptable
alternate unless all requirements of this AMS are met.
PREPARED BY AMS COMMITTEE "F"
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