S7 Tool Steel Round Bar Sheet Plate Material - China

AISI S7 tool steel be made of chromium-molybdenum alloy to satisfy the needs of high impact toughness.

The chemical composition of Cr is quite high.

So it has good tempering resistance, high-temperature oxidation, wire-electrode cutting property and impact toughness.

After annealing softening treatment, the rolling steel bar must take the process of heating before the use.

Because of the higher toughness and high-temperature oxidation, S7 steel material is widely used in the plastic mold, cold work and hot work tools that working in the high temperature and impact condition.

S7 Steel Application

What Is S7 Steel Used for? Punch

Forging Die

Hammer

Chisel

Cutting Tools

Small Plastic Molds

Gripper Dies

Swaging Dies

Shear Blades

Hot Work and Cold Work Mold

Blanking Dies

Drills

Drill Plates S7 Steel Round Bar Sheet Plate Heat Treatment

Annealing

Start by quickly heating to 1500 to 1550°F and hold at that temperature for an hour and a half.

It is then slowly cooled to 1000°F followed by air cooling, this is for optimum processability.

This annealing procedure should produce a maximum Brinell hardness of 197 - Stress Relief S7 Steel Material: When required to relieve machining strain, heat slowly to 1050°-1250°F, allow to equalize, then cool in air.

Hardening

Preheating: Before hardening, S7 steel is heated slightly before being loaded into a preheat furnace at 1200°-1300°F.

Hardening: 1750°F.

Air quench if cross section is 2-1/2″ or smaller; 2-1/2″ through 6″ sections should be oil quenched to black (1000°F) then air cooled to 150°F.

Larger Cross-sections of S7 steel shall be oil quenched to 150°F.

Quenching

Quenching in still or dry air.

Tempering

Tool steel S7 is typically tempered for one hour per inch of section thickness to achieve the required heating rate of 2 hours per inch.

Cool in air to room temperature between states.

Tempering temperatures vary according to intended use.

Recommended: 400°-500°F for cold work applications.

Thermal processing applications from 900°-1000°F.

Forging

First preheat to 1200°-1300°F, forge at 2000°-2050°F, then stop at 1700°F and cool slowly.

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: 076985475596

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

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• 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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