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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, ASTM 201 Stainless Steel Round Bar with High Quality, Tool Steel Round Bar (O2, 90MnCrV8, 1.2842, BS BO2) and so on.

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Supplier Homepage Product Structual Steel High Tensile Steel ASTM 4140 Steel Bar Structural Alloy Steel with High Quality

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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