Shanghai Jieteng Precision Mold Factory

Shanghai Jingteng Metal Group Co., Ltd.

   
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SNCM439 Alloy Steel

SNCM439 Alloy Steel

SNCM439 Alloy Steel
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Thickness：
Diameter：
  
SNCM439 Alloy Steel



Material Name


Material Name: SNCM439
Execution standard: JIS G4053-2003


Chemical Composition 


C Si Mn S P Cr Ni Cu Mo
0.36～0.43
 0.15～0.35 0.60～0.90 Below 0.025 Below 0.025
 0.60～1.00 1.60～2.00 Below 0.025 0.15~0.30

 Mechanical Properties


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 
Above 980 Above 835 Above 12 Above 55
 Above 78
 Above 78
   Below 269 25mm

specification of heat treatment and metallurgical structure

 
Specification of heat treatment : normalizing 850℃, oil cooling; tempering 600℃, water cooling, oil cooling.

Delivery State


Heat treatment (normalizing, annealing or high temperature tempering) or non heat treatment state of delivery, the delivery state should be indicated in the contract.