Tool Steels M1 is stocked by 5 North American distributors and produced by 5 large mills. 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 3 distributors but is also available to a lesser extent in Flat Rolled Products, and Wire Products.
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For mill (large volume) production click here
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Specifications
The following specifications cover Tool Steels M1
- ASTM A600 (M-1)
- DIN 1.3346
- SAE J437 (M-1)
- SAE J438 (M-1)
- UNS T11301
Property Results
Related Metals:
- 8-N-2(tm)
- Rex TMO(tm)
- Star-Max(tm)
- Tatmo(tm)
- Thyrapid 3346(tm)
Chemistry Data : [top]
Carbon
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0.78 - 0.88 |
Chromium
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3.5 - 4 |
Iron
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Balance |
Manganese
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0.15 - 0.4 |
Molybdenum
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8.2 - 9.2 |
Phosphorus
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0.03 max |
Silicon
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0.2 - 0.5 |
Sulphur
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0.03 max |
Tungsten
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1.4 - 2.1 |
Vanadium
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1 - 1.35 |
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Principal Design Features
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M1 is a molybdenum, chromium, vanadium alloy tool steel generally known as a Molybdenum High Speed Tool Steel. It is on of the most widely available tool steels in use today. It is similar in properties to the tungsten tool steels (T series) at a lower cost.
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Applications
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Typical use is for cutting tools of all kinds.
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Machinability
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M1 is classified as a "medium" machinable alloy. Machining should be accomplished prior to hardening heat treatment followed by finish grinding. It has a rating of 50% that of the water hardening (W group) low alloy tool steels in regard to machinability.
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Forming
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Forming is done by machining.
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Welding
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Consult the alloy supplier for information on weld procedures.
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Heat Treatment
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M1 should be preheated at 1400 F before being heat treated. It should then be rapidly heated to 2175 F for 3 to 5 minutes followed by quenching in oil, salt bath or air cool. It should then be tempered.
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Forging
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Forge at 2000 F down to 1700 F. Do not attempt to forge below 1700 F.
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Hot Working
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No data except for forging. Consult the alloy supplier.
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Cold Working
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This alloy may be cold worked in the annealed condition.
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Annealing
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Anneal at 1575 F and furnace cool at a rate of 40 F per hour or less.
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Aging
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Not applicable to this alloy.
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Tempering
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Temper at 1050 F long enough to permit thorough heating and air cool. It is best to repeat the same tempering operation a second time for best results. This will produce a part with a hardness in the range of Rockwell C 63.
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Hardening
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Hardens by heat treatment and quenching. See "Heat Treatment" and "Tempering".
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Other Comments
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M1 has very good resistance to wear. However its toughness is relatively low as is its resistance to decarburization.
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Physical Data : [top]
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Density (lb / cu. in.)
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0.295
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Specific Gravity
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8.16
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Melting Point (Deg F)
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2600
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Modulus of Elasticity Tension
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28
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Mechanical Data : [top]
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MSO currently has no data available for this grade.
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Videos :
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MSO currently has no videos available for this grade.
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Disclaimer
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This publication may include technical inaccuracies or typographical errors. Changes may be periodically made to the information herein.
