Shanghai Jieteng Precision Mold Factory

Shanghai Jingteng Metal Group Co., Ltd.

   
Product
Article
Search
NameDescriptionContent
Product center
  
  
  
location：
HOME ≡ Special Steel ≡ Alloy Steel ≡ ​ Japanese Standard Alloy Steel​ ≡ SMn420
PRODUCT CENTER
Contact us
SMn420

SMn420

SMn420 Alloy Steel
￥ 0.00
0.00
Thickness：
Diameter：
  
SMn420 Alloy Steel



Material Name


Material Name: SMn420
Execution standard: JIS G4053-2003

Characteristics and scope of application


With moderate intensity. When the cold deformation plasticity is high and low temperature performance is good, and the corresponding carbon than carbon steel, the quenching through higher. Generally used as parts of a smaller cross-section, and 20Cr steel, carburizing gear, shaft, steel sleeve, piston pin, diesel engine sleeve car turned to the rolling wheel, valve push rod; can also be used for Quenched and tempered steel, such as cold heading bolt or a larger cross section of the quenched and tempered parts.

Chemical Composition


C
 Si Mn S P
 		Cr Ni Cu
0.17-0.23
 0.15-0.35 1.20-1.50 Max 0.030 Max 0.030
 Max 0.35 Max 0.25 Max 0.30

Mechanical Property


Tensile strength
σb (MPa) 		Yield Strength
σs 0.2 (MPa)
Elongation
δ 5 (％)
reduction of crosssection area
ψ (％)
 ballistic work
Akv (J) 		pounding toughness value
αkv (J/cm2)
         Hardness
(HB)
specimen size
Min 785 Min 590 Min 10 Min 40
 Min 47
 Min 59
   Max 187 15mm

specification of heat treatment and metallurgical structure


Specification of heat treatment : hardening 850℃ water cooling, oil cooling, tempering 200℃ water cooling, air cooling

Delivery State


In the heat treatment (quenching, annealing or tempering) or heat treatment delivery, delivery status should be indicated in the contract.