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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See “Heat Treatment” and “Tempering”. Do Not forge below F. This abstract is a brief summary of the referenced standard.
Grades and Trade Names
Primarily used for cutting tools. It is informational only and not an official part of the standard; the full text qstm the standard itself must be referred to for its use and application.
Preheat at F before heating for hardening. Temper at F for a a060 of Rockwell C 60 to Modulus of Elasticity Tension. 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 adtm 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.
Anneal at F and slow furnace cool at 40 F per hour, or less. Consult the alloy supplier for information on the advisability of welding. The values given in parentheses are mathematical conversions to SI units that are provided asym information only atm are not considered standard. Forge at F down to F. Historical Version s – view previous versions of standard. Then heat rapidly from F to F and hold for 3 to 5 minutes followed by quenching in oil, air or salt bath.
Two intermediate high speed tool steels designated as M50 and M52 are also covered. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Unless otherwise specified, aatm shall be made by an satm melting process. 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.
It may be shaped by grinding but is relatively poor in regard to capability of being ground. See “Forging” and consult the supplier for information on working at lower temperatures. The maximum Brinell hardness and minimum Rockwell C hardness for the tool steels are given.
Selection will depend upon asmt, service conditions, and mechanical properties.
ASTM A, for Tool Steel High Speed – Otai Special Steel
Hardens by heat treatment and quenching. The M2 alloy has somewhat better wear resistance than M1.
Not applicable to this alloy. Cold working may be accomplished with the alloy in the annealed condition.
ASTM A600 T5 High Speed Tool Steel Round Bar
M2 is classified as a “medium” machinability tool steel in the annealed condition. Link to Active This link will always route to the current Active version of the standard. 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.
Formed by machining or forging and then machining.