Shanghai Jieteng Precision Mold Factory

Shanghai Jingteng Metal Group Co., Ltd.

   
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ASTM4320 Alloy Steel

ASTM4320 Alloy Steel

ASTM4320 Alloy Steel
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ASTM4320 Alloy Steel



Material Name


Material Name: ASTM4320
Execution standard: ASTM A29/A29M-04

Chemical Composition 


C Si Mn S P Cr Ni Cu
0.17～0.22 0.17～0.37 0.45～0.65 Below 0.040 Below 0.035
 0.40～0.60 1.65～2.00 Below 0.030

 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 
Above 785 Above 590 Above 12 Above 50
 Above 63
 Above 78
   Below 207 15mm

specification of heat treatment and metallurgical structure

 
Specification of heat treatment : hardening, 860℃ for the first time, 780℃ for the second time, water cooling, oil cooling; tempering, 200℃, 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.