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

Primarily used for cutting tools. The maximum Brinell hardness and minimum Rockwell C hardness for the tool steels are given.

Not applicable to astn alloy. 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.

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

See “Heat Treatment” and “Tempering”. 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.


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. 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 astj oil, air or salt bath. Temper satm F for a a6600 of Rockwell C 60 to Selection will depend upon design, service conditions, and mechanical properties.

See “Forging” and consult the supplier for information on working at lower temperatures. Historical Version s – view previous versions of standard.

Hardens by heat treatment and quenching. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Formed by machining or forging and then machining.

ASTM A600 T5 High Speed Tool Steel Round Bar

This abstract is a brief summary of the referenced standard. Distributors will offer small quantity buys while mills asfm generally only sell large quantities, with delivery times anywhere from 10 to 50 weeks depending ashm 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.


Do Not forge below F. It may be shaped by grinding but is relatively poor in regard to capability of being ground. M2 is classified as a “medium” machinability tool steel in the annealed condition. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

M2 Tool Steels Material Property Data Sheet – Product availability and request a quote

Cold working may be accomplished with the alloy in the annealed condition. The M2 alloy has somewhat better wear resistance than M1.

Consult the alloy supplier for information on the advisability of welding. Modulus of Elasticity Tension.

Preheat at F before heating for hardening. Forge at F down to F. Link to Active This link will always route to the current Active version of the standard. Two intermediate high speed tool steels designated as M50 and M52 are also covered.