• Wuxi Jinlai Mechanical Processing Co., Ltd.
    John Fairbank
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Phone Number : +86-18706170710
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40Cr Astm 5140 Steel , Medium Alloy Steel JIS Scr440 DIN17045 Precise Cutting

Place of Origin: CHINA
Brand Name: JIN LAI
Certification: ISO
Model Number: DIN1.7045
Minimum Order Quantity: 1 ton
Price: negotiable based on the quantity
Packaging Details: Standard seaport packing or as custom request
Delivery Time: 10-30 days
Payment Terms: T/T, Western Union, L/C
Supply Ability: 6000 tons per month
Product Details
Standard: AISI, ASTM, BS, DIN, GB, JIS Length: 1000-4000mm
Shippping: Sea Freight MOQ: 1 TON
Surface: Black / Peeled / Polishing / Port: Shanghai
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Product Description

40Cr Alloy Steel Plate JIS Scr440 ASTM 5140 DIN1.7045 Steel Plate Cutting

 

40Cr steel is a kind of Chinese GB standard alloy steel for engineering and machinery purpose, and one of the most widely used steel grades. For 40Cr material hardness, specifications and equivalent, please see the table below. After quenching and tempering treatment, 40Cr steel has good comprehensive mechanical properties, low temperature impact toughness, low notch sensitivity, good hardenability, and high fatigue strength in cold oil. When water cooling, the complicated shape of the parts is prone to cracks, the cold bending plasticity is medium, and the cutting workability after normalizing is good, but the weldability is poor, should be preheated before welding, and is generally used in the state of quenching and tempering.

40Cr Steel Chemical Composition

  Chemical Composition (%)
Grade C % Si Mn Cr
40Cr 0.37 – 0.44 0.17 – 0.37 0.5 – 0.8 0.80 – 1.10

Mechanical Properties of 40Cr Alloy Steel

  • Tensile strength: ≥810 N/mm2 (When actual hardness 25 HRC)
  • Yield strength: ≥785 N/mm2
  • Elongation after break: ≥9%
  • Rate of reduction in area: ≥45%
  • Impact absorbing energy: ≥47 J
  • Material Brinell hardness: ≤207 (annealing or high temperature tempering state)
  • Sample size: 25mm

Heat treatment specification

  • First quenching heating temperature: 850 °C (Cooling: oil)
  • Tempering heating temperature: 520 °C

Equivalent grades of 40Cr Material

40Cr steel equivalent to US ASTM AISI, European Germany DIN EN, British BS EN, France NF EN, Japanese JIS and ISO standard.

Equivalent (For reference)
China USA Germany Japan France UK ISO
Standard Grade Standard Grade Standard Grade (Steel number) Standard Grade Standard Grade Standard Grade Standard Grade
GB/T 3077 40Cr AISI or
ASTM A29/A29M
5140 DIN EN 10083-3 41Cr4 (1.7035) JIS G4104 SCr440 NF EN 10083-3 41Cr4 (1.7035) BS EN 10083-3 41Cr4 (1.7035) ISO 683-1 41Cr4

Applications of 40Cr material

After 40Cr alloy steel quenching and tempering treatment, it is used to manufacture medium-speed, medium-load parts such as machine gears, shafts, worms, spline shafts, thimble sleeves, etc.

 

After quenching and tempering and high-frequency surface quenching, it is used to manufacture high-hardness, wear-resistant parts such as gears, shafts, spindles, crankshafts, sleeves, pins, connecting rods, screws, nuts, intake valves, etc.

After quenching and medium temperature tempering, it is used to manufacture heavy-duty, medium-speed impact parts such as oil pump rotors, sliders, gears, spindles, collars, etc.

After quenching and low temperature tempering, it is used to manufacture heavy-duty, low-impact, wear-resistant parts such as worms, spindles, shafts and collars.

After carbonitriding treatment, it is used to manufacture transmission parts with large size and high low temperature impact toughness, such as shafts and gears.

Packaging & Shipping

 

Packing: Customized or Loose packing

Delivery Time: 30-60 days after payment

 

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40Cr Astm 5140 Steel , Medium Alloy Steel JIS Scr440 DIN17045 Precise Cutting 0

40Cr Astm 5140 Steel , Medium Alloy Steel JIS Scr440 DIN17045 Precise Cutting 1

40Cr Astm 5140 Steel , Medium Alloy Steel JIS Scr440 DIN17045 Precise Cutting 2

 

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