ASTM A Standard Specification for Cold Finished Alloy Steel Bars. Find the most up-to-date version of ASTM A at Engineering See the chemical composition and physical properties of ASTM A Grade Steel, find alternative materials, and connect with suppliers.
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This case-hardening will result in asm wear characteristics. There were over 19, cancelled or superceded specifications, commercial item descriptions and standards when I first prepared my list of Obsolete Federal Specifications for cold finished steel in Where do you go for an assist when wierd, strange, and unusual specifications appear in a quote package?
Create a free a331 or blog at WordPress. Hot working may be accomplished prior to hardening or carburizing. To find out more, including how to control cookies, see here: Following carburizing of heavy sections a reheat at F will enhance both case and core properties of the alloy. Improved carburized case and core properties can be obtained by furnace cooling from carburizing at – F and then reheating to F.
Click Here to Email Me. Consult the alloy supplier for information as to temperatures. The alloy may be welded by conventional methods, usually gas or arc welding. Speaking of Precision Blog Sensemaking for the precision machining industry.
Preheating at F is beneficial and subsequent heating after welding is recommended – consult the approved weld procedure ast the method used. Machining may be done by conventional means prior to heat treatment – after carburizing machining is usually limited to grinding. A request for an assist always atm in a prompt response from the appropriate supplier expert or an answer from PMPA Staff.
The time to catch an obsolete specification is during contract review, before there are commitmemnts to material and or sunk costs of material, production and inspection. This alloy is typically used for carburized parts where a hardened case is desired for wear resistance. Tempering of heat treated and water quenched parts not carburized is done at F to F with greater hardness the lower the tempering temperature.
By continuing to use this website, you agree to their use. In the carburized condition this alloy is used for a313, ring gears, shafts and crankshafts. Mean Coeff Thermal Expansion.
Sometimes the replacement standard or specification contain different product requirements.
ASTM A331 1995 Standard Specification for Cold Finished Alloy Steel Bars
Hardening is done by oil quench from F. For Email Marketing you can trust. Machining is done prior to carburizing to within as close a tolerance as possible.
Not applicable to this alloy. Sign up ashm our Newsletter.
Modulus of Elasticity Tension. The alloy may be cold worked in the annealed condition by conventional methods. The alloy may be forged at F down to F prior to the hardening asrm treatment or carburizing. Distributors will offer small quantity buys while mills will generally only sell large quantities, with delivery times anywhere from 10 to 50 weeks depending on size and form required This material is stocked primarily in Bar Products by 59 distributors but is also available to a lesser extent in Flat Rolled Products, Tubular Products, Wire Products, Forging Products, and Casting Products.
Alloy Steels Material Property Data Sheet – Product availability and request a quote
AISI is a hardenable chromium, molybdenum, nickel low alloy steel often used for carburizing to develop a case-hardened part. This alloy may be hardened by heating to F followed by a water quench.