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Huangshi Chengquan Metal Material Co., Ltd.

4140 Steel Properties, 4140 Steel Bar, Special Steel manufacturer / supplier in China, offering ASTM 4140 Steel Bar Structural Alloy Steel with High Quality, Good Price 52100 Bearing Steel, DIN1.2414 Flat Tool Steel with Superior Quality and so on.

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ASTM 4140 Steel Bar Structural Alloy Steel with High Quality

FOB Price: US $500-5,000 / Ton
Min. Order: 1 Ton
Min. Order FOB Price
1 Ton US $500-5,000/ Ton
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Production Capacity: 500tons Per Month
Transport Package: Apply The Shipping Packing
Payment Terms: L/C, T/T, D/P

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Basic Info
  • Model NO.: 4140
  • Standard: ASTM
  • Technique: Forged
  • Surface Treatment: Black, Grinded, Peeled, Polished, Rough Turned
  • Application: Structural Steel Bar
  • Size Range: Diameter: 20-480mm
  • Delivery Condition: Annealed, Qunched and Tempered
  • Trademark: CHENGQUAN
  • Origin: Hubei, Huangshi
  • Type: Alloy Steel Bar
  • Composition: Ferrous Steel Scrap
  • Shape: Round, Square, Flat
  • Special Use: Mold Steel
  • Similar Grades: 42CrMo4, 42CrMo, Scm440
  • Quality Standard: ASTM-A29
  • Surface Condition: Black, Grinded, Peeled, Polished
  • Specification: 4140, 42CrMo4, 42CrMo, SCM440
  • HS Code: 7228600000
Product Description

 Similar Grades:
 42CrMo4, 42CrMo, SCM440
 
Shape: 
Round, Flat,.
 
Size Range: 
Diameter:20-480mm, Thickness:10-420mm.
 
Delivery Condition: 
Annealed, Qunched and Tempered
 
Surface Condition: 
Black, Grinded, Peeled, Polished
 
Features:

1:Competitive price 
2 Immediate delivery
3.Premium quality
4.Reliable service
 
Chemical Composition:

C
MnPSSiCrMo
0.38-0.430.75-1.000.0350.0400.15-0.350.80-1.100.15-0.25
 
 
Characteristics                                                         
4140 Alloy Steel/SAE 4140 Steel Price is engineering steel supplied in quenched and tempered conditions. Very good machinability. High toughness. High creep strength. Repeated impact resistant capability.
 
Applications                                                                      
4140 Alloy Steel/SAE 4140 Steel Price  is use to producecomponents with high requirements on toughness, e.g. gear wheels, pinions, connecting rods, parts for mechanical engineering .
 
Heat treatment                                                      
Forging Heat to 1150°C. Hold until uniform. Minimum forging temperature 850°C.Cool slowly in ashes or sand etc.
Annealing Heat to 830°C-850°C.Cool in furnace.
Normalising Heat to 870°C-900°C.Cool in still air.
Stress Relieving Annealed: Heat to 600°C-650°C.Hardened: Heat to 500°C-550°C.Cool in still air.
Hardening Heat to 830°C-880°C. Quench in oil or polymer.
Tempering Heat to 450°C-700°C cool in still air. NB. Tempering within the range 200°C-420°C will result in temper brittleness and should be avoided.
 
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