SAE AMS 6358G:2000 pdf download Steel Sheet, Strip, and Plate 0.50Cr – 0.55Ni – 0.25Mo (0.38 – 0.43C) (SAE 8740)
1 . SCOPE:
1 .1 Form: This specification covers an aircraft-quality, low-alloy steel in the form of sheet, strip, and plate.
1 .2 Application: These products have been used typically for heat treated parts requiring through-hardening to minimum tensile strength of 200 ksi (1 ,380 MPa) in section thickness up to 0.375 inch (9.50 mm) and proportionately lower strength in heavier thicknesses, but usage is not limited to such applications.
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 canceled and no superseding document has been specified, the last published issue of that document shall apply.
2.1 SAE Publications:
Available from SAE, 400 Commonwealth Drive, Warrendale, PA 1 5096-0001 .
AMS 2252 Tolerances, Low Alloy Steel Sheet, Strip, and Plate
MAM 2252 Tolerances, Metric, Low Alloy Steel Sheet, Strip, and Plate
AMS 2259 Chemical Check Analysis Limits, Wrought Low Alloy and Carbon Steels
AMS 2301 Cleanliness, Aircraft Quality Steel, Magnetic Particle Inspection Procedure
MAM 2301 Cleanliness, Aircraft Quality Steel, Magnetic Particle Inspection Procedure Metric (SI) Measurement
AMS 2370 Quality Assurance Sampling and Testing, Carbon and Low Alloy Steel, Wrought Products and Forging Stock
AMS 2807 Identification, Carbon and Low Alloy Steels, Corrosion and Heat Resistant Steels and Alloys, Sheet, Strip, Plate and Aircraft Tubing
2.2 ASTM Publications:
Available from ASTM, 1 00 Barr Harbor Drive, West Conshohocken, PA 1 9428-2959.
ASTM A 370 Mechanical Testing of Steel Products
ASTM E 1 1 2 Determining the Average Grain Size
ASTM E 350 Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron
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 350, by spectrographic or other analytical methods approved by purchaser:
3.1 .1 Check Analysis: Composition variations shall meet the applicable requirements of AMS 2259.
3.2 Condition:
The product shall be supplied in the following condition; hardness shall be determined in accordance with ASTM A 370:
3.2.1 Sheet and Strip: Cold finished, bright or atmosphere annealed, and descaled if necessary, or hot rolled, annealed if necessary, and descaled having hardness not higher than 98 HRB, or equivalent (See 8.2).
3.2.2 Plate: Hot rolled, annealed if necessary, and descaled having hardness not higher than 24 HRC, or equivalent (See 8.2).
3.3 Properties: The product shall conform to the following requirements; hardness and bend testing shall be performed in accordance with ASTM A 370:
SAE AMS 6358G:2000 pdf download
