China Jis Skh51 High Speed Tool Steel Sheet Plate - China

High-speed steel has good process performance, good strength and toughness, so it is mainly used to manufacture complex thin blades and impact-resistant metal cutting tools, as well as high-temperature bearings and cold extrusion dies.

In addition to the high-speed steel produced by the smelting method, powder metallurgy high-speed steel appeared after the 1960s.

Its advantage is to avoid the reduction of mechanical properties and heat treatment deformation caused by carbide segregation caused by the smelting method.

JIS SKH51 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.

JIS SKH51 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.

Songshun specialized in Special Steel for almost 20 years.

We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.

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Company Contact:

• Posted By: Dongguan Songshun Mould Steel Co., Ltd.

• Phone: 0086 0769 85475596

• Address: 1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town, Dongguan , GuangDong , China

• Email:

• Website: https://songshunsteel.com

• Business Description: Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc.
  
  After more than 10 years development and growing, Songshun Steel becomes one comprehensive special steel factory, stockist and exporter.
  
  Combined with experienced exporting team and professional technical knowledge, Songshun Steel offers both technical advice and support, as well as global professional steel solution and service.
  
  Due to satisfactory reliable quality and professional service, Songshun expands our market worldwide, such as Colombia, Chile, Spain, Turkey, Iran, Vietnam, Malaysia ,UAE, Canada, Brazil, Mexico and so on.
  
  Songshun specialized in Special Steel for almost 20 years.
  
  We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.
  
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