Hot Rolled Din 1 3243 Steel Plate Suppliers - China

1.3243 Steel Characteristics

M35 and M42 are the most popular high speed steel grades in the international.

The alloy element content of M35 steel is higher, and also has the cobalt element.

So its red hardness is higher.

It has great hardness at high temperature.

The hot hardness, machinability and wearing resistance are good.

1.3243 Steel Forging Technology

Notice for Quenching and Tempering

Preheat two times: 600℃, 860℃.

And the time of preheating is twice the time of heating.

The request of quenching is 10-12s/mm.

Needs the step hardening: 600℃→260-280℃→air cooling.

The temperature of secondary hardening is 535-540℃ around.

The hardness is bigger than 68HRC for after tempering.

But the factories do not want the hardness of cutting tool is more than 68HRC due to the request for production.

So it always is been tempering.

As we can see from the table, the best temperature for quenching is in the range of 1215-1225℃.

In this condition, it is suitable for annual cutting tools.

Its hardness is about 67-67.5HRC.

It satisfies the needs of high speed steel high speed steel for high strength, high hardness and high wear resistance.

M35 steel that been quenching at the temperature below 1190℃ is good material for cold work die and low-speed cutting tools.

And if it been quenching at the temperature higher than 1230℃ which will have a great red hardness.

It will be a good choice for turning tools and etc.

Quenching it in that way will cause overheating.

But it is not a trouble, the key is to control it in the right way.

Some cutting tools are overheating to be more useful.

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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.
  
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