AISI M2 Steel Round Bar Sheet Plate, JIS SKH51, DIN 1.3343

M2 high speed tool steel is tungsten-molybdenum high-speed steel with a well-
balanced carbon composition and high toughness. It is also called JIS SKH51 and
DIN 1.3343 steel. It is easy to overheat, control the quenching heating
temperature is necessary and the heat treatment protection requirements are
strict. It is used widely to make cutting tools because of its great hardness
and wear resistance. It has replaced T1 high speed steel in most applications,
become the first choice of customer due to its great performance and extremely
high-performance price ratio.

M2 Steel Round Bar Sheet Plate Heat Treatment
Machinability
The shaping of M2 tool steels may be executed using grinding strategies. But,
which has bad grinding capability. So they’re called as “medium”
machinability tool steel under annealed conditions. The machinability of these
steels is only 50% of that of the easily machinable W group or water hardening
tool steels.

Annealing
Heat to 1600° F, soak thoroughly at heat. Furnace cool 25° F per hour to
900° F, air cool to room temperature. Approximate annealed hardness 241
Maximum Brinell.

Stress Relief of Unhardened Material: Heat slowly to 1200 to 1250° F. Soak for
two hours per inch of thickness at heat. Slow cool(furnace cool if possible) to
room temperature.

Hardening
Heat M2 steel slowly to 1550° F, soak fully, heat to 1850° F, soak
thoroughly. Soak time in the furnace varies from a few minutes to 15 minutes,
depending on tool size, the heat capacity of the furnace, and the size of the
charge. – Heat to 2150 to 2200° F for max. toughness and minimum distortion.
– Heat to 2250 to 2275° F for max.

Tempering
Double tempering is necessary, sometimes preferred three times tempering. Soak
for 2 hours per inch of thickness. Air cool to room temperature between
tempers. The best tempering range for hardness, strength and toughness is 1000
to 1050° F.

Quenching
For full hardness, need to oil quench to 150-200° F. Air quenches to 150° F.
When quenching in hot salt maintains the quench just above the Ms temperature.
After equalizing withdraw parts from the hot salt and air cooled to 150° F.

M2 high speed steel is preheated prior to hardening at 2610 ° C(4730 ° F).
Then heated rapidly from 2610 ° C (4730 ° F) to 3960 ° C (7160 ° F). The
steel is finally cooled for 3 to 5 minutes and quenched in air, salt bath or
oil.

Notice
We have our own cutting and processing equipment. Specifications can be cut and
customized according to your requirements.
We are a professional special steel stockist and supplier with a high-quality
stand for many years. As a professional M2 steel supplier, please contacts us
for any request of AISI M2/DIN 1.3343 steels materials. Songshun Steel always
with you.

Songshun specialized in Special Steel for almost 20 years. We can supply mold
steel, high speed steel, alloy steel, free cutting steel and etc.Welcome your
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Minimum Order: 1 short tons

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