Excellent Comprehensive Performance Aisi 4340 Alloy Steel Advantage - China

Mechanical properties

The mechanical properties of AISI 4340 alloy steel are as follows:

Tensile strength: up to 930 – 1080 MPa.

Yield strength: up to 1000 MPa or more.

Hardness: up to 280 – 320 HB after quenching and tempering, or even higher to HRC58 or more.

Elongation: good plasticity after heat treatment, with an elongation of more than 25%.

Physical properties

The physical properties of AISI 4340 alloy steel include:

Density: 7.85 g/cm³.

Melting point: 1416°C (2580°F).

Thermal conductivity: 42.6 W/m·K.

Coefficient of expansion: 12.3 μm/m°C.

These physical properties help to understand the material's compactness, heat resistance, and temperature control during heat treatment.

Supply form

AISI 4340 alloy steel is usually supplied in a quenched and tempered state, and can also be pre-hardened as required.

In addition, surface hardening can be performed by flame or induction hardening and nitriding to meet the needs of specific applications.

In summary, AISI 4340 alloy steel plays an important role in the industrial field with its excellent comprehensive performance.

Through precise chemical composition control and heat treatment process, AISI 4340 can meet a variety of high-demand application scenarios.

Songshun Company Website:

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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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