Factory Supply High Strength Jis Sncm439 Metal Alloy Steel Warm Up - China

Describe:

4340 belongs to the American standard high-strength alloy structural steel, which is made of high-quality carbon structural steel by appropriately adding one or more alloying elements (the total content does not exceed 5%).

Corresponding steel number:

China GB steel number 40CrNiMoA, German DIN steel number 36CrNiMo4, German DIN material number 1.6511, French NF standard 40NCD3, Japanese JIS standard SNCM439, British BS standard 816M40, American AISI/ASTM4340, American UNS standard G43400 chemical composition:

C: 0.37-0.44 Si: 0.17-0.37 S: ≤0.035 P: ≤0.035

Mn: 0.50-0.80 Cr: 0.60-0.90 Mo: 0.15-0.25 Ni: 1.25-1.65 Heat treatment specification:

Quenching at 850℃, oil cooling; tempering at 600℃, water cooling, oil cooling

Brinell hardness GBW of annealed or high-temperature tempered steel is less than or equal to 269; The mechanical properties of AISI 4340 alloy structural steel

Tensile strength σb (MPa): ≥980(100)

Yield strength σs (MPa): ≥835(85)

Elongation δ5 (%): greater or equal to 12

Area shrinkage ψ (%): greater or equal to 55

Impact energy Akv (J): greater or equal to 78

Elongation δ5 (%): ≥12

Area shrinkage ψ (%): ≥55

Impact energy Akv (J): ≥78

Impact toughness value αkv (J/cm2): ≥98(10)

Sample size: sample blank size is 25mm The above is the information of our AISI 4340 alloy structural steel.

We have sold tens of thousands of tons of AISI 4340 steel.

With professional knowledge, rich production experience and high-quality service, we not only provide ASTM 4340 alloy round bar steel, but also square steel and flat steel.

Fang Gang, if you want to know more updated 4340 steel industry information, please feel free to contact us!

For more steel product information, Please search our company(Dongguan Songshun Mould Steel Co., Ltd.)and check the official website!!!

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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

• 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.
  
  Welcome your contact 24 hours a day!!!
  
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