SAE AMS 6320L:2003 pdf download

SAE AMS 6320L:2003 pdf download Steel Bars, Forgings, and Rings 0.50Cr – 0.55Ni – 0.25Mo (0.33 – 0.38C) (SAE 8735)
1. SCOPE:
1.1 Form: This specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, flash welded rings, and stock for forging or flash welded rings.
1.2 Application: These products have been used typically for parts, 0.75 inch (19.0 mm) and under in nominal section thickness at time of heat treatment, requiring a through-hardening steel capable of developing hardness as high as 40 HRC when properly hardened and tempered and for parts of greater thickness but requiring proportionally lower hardness 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 cancelled 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 15096-0001 or www.sae.org.
AMS 2251 Tolerances, Low-Alloy Steel Bars
AMS 2259 Chemical Check Analysis Limits, Wrought Low-Alloy and Carbon Steels
AMS 2301 Steel Cleanliness, Aircraft Quality, Magnetic Particle Inspection Procedure
2.1 (Continued):
AMS 2370 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel, Wrought Products and Forging Stock
AMS 2372 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel, Forgings
AMS 2806 Identification, Bars, Wire, Mechanical Tubing, and Extrusions, Carbon and Alloy Steels and Corrosion and Heat-Resistant Steels and Alloys
AMS 2808 Identification, Forgings
AMS 7496 Rings, Flash Welded Carbon and Low-Alloy Steels
AS1182 Standard Machining Allowance, Aircraft Quality and Premium Aircraft-Quality Steel Products
2.2 ASTM Publications:
Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or www.astm.org.
ASTM A 255 Determining Hardenability of Steel
ASTM A 370 Mechanical Testing of Steel Products
ASTM E 112 Determining Average Grain Size
ASTM E 350 Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron
ASTM E 381 Macroetch Testing, Steel Bars, Billets, Blooms, and Forgings
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 350, by spectrochemical methods, or by other analytical methods acceptable to 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 and tensile strength shall be determined in accordance with ASTM A 370:
3.2.1 Bars:
3.2.1.1 Bars 0.500 Inch (12.70 mm) and Under in Nominal Diameter or Least Distance Between Parallel Sides: Annealed and cold finished having tensile strength not higher than 120 ksi (827 MPa) or equivalent hardness (See 8.2).