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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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Following carburizing of heavy sections a reheat at F will enhance both case and core properties of the alloy. Hardening is done by oil quench from F.

Mean Coeff Thermal Expansion. The time to catch an obsolete specification is during z331 review, before there are commitmemnts to material and or sunk costs of material, production and inspection.

Tempering of carburized parts is done at to F and this will result in the alloy having a core strength of approximately ksi minimum with Rockwell C case hardness of Where do you go for an assist when wierd, strange, and unusual specifications appear in a quote package? The alloy may be welded by conventional methods, usually gas or arc welding.

These specifications, standards and descriptions often specify mandatory product attributes. Machining is done prior to carburizing to within as close a tolerance as possible. This case-hardening will result in good wear characteristics. This alloy z331 typically zstm for carburized parts where a hardened case is desired for wear resistance. This alloy may be hardened by heating to F followed by a water quench. Not applicable to this alloy. A request for an assist always results in a prompt response from the appropriate supplier expert or an answer from PMPA Staff.


For Email Marketing you can trust. Tempering of heat treated and water quenched parts not carburized is done at F to F with greater hardness the lower the tempering temperature. Machining may be done by conventional means prior to heat treatment – after carburizing machining is usually limited to grinding.

Alloy Steels Material Property Data Sheet – Product availability and request a quote

Carburize at to F in an appropriate carburizing medium and oil quench to harden. Cold working, as with machining, should be done to as close a tolerance as possible before heat treatment or carburizing. The alloy may be forged at F down to F prior to the hardening heat treatment or carburizing. Consult the alloy supplier for information as to temperatures.

8620 Alloy Steels Material Property Data Sheet – Product availability and request a quote

Forming characteristics of alloy are good in the annealed condition. The alloy may be cold worked in the annealed condition by conventional methods.

In the carburized condition this alloy is used for gears, ring gears, shafts and crankshafts. Sign up for our Newsletter. This site uses cookies. Preheating at F is beneficial and subsequent heating after welding is recommended – consult the approved weld procedure for the method used.

Hot working may be accomplished prior to hardening or carburizing.


From there it may be air cooled. Modulus of Elasticity Tension. Sometimes the replacement standard or specification contain different product requirements. Speaking of Precision Blog Sensemaking for the precision machining industry. 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.

To find out more, including how to control cookies, see here: Create a free website or blog at WordPress. 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 a3311 steel in Improved carburized case and core properties can be obtained by furnace cooling astk carburizing at – F and then reheating to F.

AISI is a hardenable chromium, molybdenum, nickel low alloy steel often used for carburizing to develop a case-hardened part. Click Here to Email Me.

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