American Standard High Strength Impact Resistance Aisi 4340 Alloy Structural Steel Square - China

1 - SAE4340 alloy structural steel has high strength, toughness and excellent hardenability and stability against overheating.

It is mainly used for large-sized important quenched and tempered parts, such as heavy machinery and high-load shafts, and turbines with a diameter greater than 250mm.

Shafts, helicopter rotor shafts, turbojet turbine shafts, blades, high-load transmission parts, crankshaft fasteners.

gears, etc.

; 2 - 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 3 - 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; 4 - Mechanical properties:

Tensile strength σb (MPa): greater or equal to 980(100)

Yield strength σs (MPa): greater or equal to 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 (%): greater or equal to 12

Impact toughness value αkv (J/cm2): greater or equal to 98(10)

Sample size: sample blank size is 25mm 5 - Our Company Dongguan Songshun Mould Steel Co., Ltd. is an Indusrtial and trading company with 2 warehouses that manufactures good & high quality kinds of steels starting from 2012 - The company provides the customized products and OEM service.

What´s more, we keep the mass stock of over 20000 tons.

In those years, we offer a wide range of steels to our customers from all over the world.

And we enjoy high praise among them.

songshunsteel41404340

6 - Contact Us

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

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.
  
  Welcome your contact 24 hours a day!!!
  
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