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 alloy may be hardened by heating to F followed by a water quench.
These specifications, standards and descriptions often specify mandatory product attributes. There were over 19, cancelled or superceded specifications, commercial item descriptions and standards when I first prepared my list of Obsolete Federal Specifications for cold finished steel in Where do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?
This case-hardening will result in good wear characteristics. To find out more, including how to astn cookies, see here: Hot working may be accomplished prior to hardening or carburizing.
Forming characteristics of alloy are good in the annealed condition.
ASTM A – 95() Standard Specification for Steel Bars, Alloy, Cold-Finished (Withdrawn )
From there it may be air cooled. Not applicable to this alloy.
Mean Coeff Thermal Expansion. The alloy may be forged at F down to F prior to the hardening heat treatment or carburizing. AISI is a hardenable chromium, molybdenum, nickel low alloy steel often used for carburizing to develop a case-hardened part. By continuing to use this website, you agree to their use.
Modulus of Elasticity Tension. 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.
For Email Marketing you can trust. Machining may be done by conventional means prior to heat treatment – after carburizing machining is usually limited to grinding.
In the carburized condition this alloy is used for gears, ring gears, shafts and crankshafts. This alloy is typically used for carburized parts where a hardened case is desired for wear resistance.
Machining is done prior to carburizing to within as close a tolerance as possible. Cold working, as with machining, should be done to as close a tolerance as possible adtm heat treatment or carburizing.
Tempering of carburized parts is done at to F and this aztm result in the alloy having a core strength of approximately ksi minimum with Rockwell C case 3a31 of Carburize at to F in an appropriate carburizing medium and oil quench to harden. The alloy may be welded by conventional methods, usually gas or arc welding.
ast, 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.
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Consult the alloy supplier for information as to temperatures. The alloy may be cold worked in the annealed condition by conventional methods. Tempering of heat treated and water quenched parts not carburized is done at F to F with greater hardness the lower the tempering temperature.
8620 Alloy Steels Material Property Data Sheet – Product availability and request a quote
Sometimes the replacement standard or specification astmm different product requirements. 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. Following carburizing of heavy sections a33 reheat at F will enhance both case and core properties of the alloy.
Preheating at F is beneficial and subsequent heating after welding is recommended – consult the approved weld procedure for the method used.