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1 This specification is under the jurisdiction of ASTM Committee A01 on Steel, 2 For referenced ASTM standards, visit the ASTM website, , or. ASTM Aa(). Standard Specification for Tool Steel High Speed. standard by ASTM International, 03/01/ View all product details. Most Recent. ASTM A Standard Specification for High Speed Tool Steel.

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It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. Unless otherwise specified, material shall be made by an electric melting process. Then heat rapidly from F to F and hold for 3 to 5 minutes followed by quenching in asttm, air or salt bath. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are asttm provided as part of the standard.

Anneal at F and slow furnace cool at 40 F per hour, or less.

ASTM A – 92a() Standard Specification for Tool Steel High Speed

Forge at F down to F. Not applicable to this alloy. Formed by machining or forging and then machining. Modulus of Elasticity Tension.


See “Heat Treatment” and “Tempering”. Primarily used for cutting tools.

ASTM A, for Tool Steel High Speed – Otai Special Steel

M2 is classified as a “medium” machinability tool steel in the annealed condition. Preheat at F before heating for hardening. Historical Version s – view previous versions of standard. This abstract is a brief summary of the referenced standard. Link to Active This link will always route to the current Active version of the standard.

It may be shaped by grinding but is relatively poor in regard to capability of being ground.

ASTM A600 T5 High Speed Tool Steel Round Bar

See “Forging” and consult the supplier for information on working at lower temperatures. Selection will depend upon design, service conditions, and mechanical properties.

Cold a60 may be accomplished with the alloy in the annealed condition. The maximum Brinell hardness and minimum Rockwell C hardness for the tool steels are given.

The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.


ASTM A600 Grade M42 cold-drawn

A chemical analysis of each heat of steel shall be made to determine the percentage of the elements specified including carbon, manganese, phosphorus, sulfur, silicon, chromium, vanadium, tungsten, molybdenum, and cobalt and these values shall conform to the requirements as to the prescribed chemical composition. The M2 alloy has somewhat better wear resistance than M1. Consult the alloy supplier for information on the advisability of welding.

Do Not forge below F.

Hardens by heat treatment and quenching. Two intermediate high speed tool steels designated as M50 and M52 are also covered.

Temper at F for a hardness of Rockwell C 60 to 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 28 distributors but is also available to a lesser extent in Flat Rolled Products, Wire Products, and Shapes.