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ASTM1524 Alloy Steel

ASTM1524 Alloy Steel

ASTM1524 Alloy Steel
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ASTM1524 Alloy Steel



Material Name


Material Name: ASTM1524
Execution standard: ASTM A29/A29M-04

Characteristics and scope of application


with medium strength, high plasticity when cold deformation, good low temperature performance, higher hardenability than corresponding carbon content's carbon steel. generally used for small section parts, and equal to 20Cr steel, can be used for carburized pinion, small shaft, steel sleeve, piston pin, diesel engine sleeve, car steering roller shaft, valve push rod, etc. also can be used for  hardened and tempered steel, such as cold heading bolt or a large section of quenched and tempered parts.


Chemical Composition 


C Si Mn S P Cr Ni Cu
0.19～0.25 0.17～0.37 1.35～1.65 Below 0.050 Below 0.040
 Below 0.30 Below 0.30 Below 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 
Above 785 Above 590 Above 10 Above 40
 Above 47
 Above 59
   Below 187 15mm



specification of heat treatment and metallurgical structure

 
Specification of heat treatment : (1). normalizing 850℃, water cooling, oil cooling; tempering 200℃, water cooling, air cooling
(2). normalizing 880℃, water cooling, oil cooling; tempering 200℃, water cooling, air 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.