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41CrAlMo7

41CrAlMo7

41CrAlMo7 Alloy Steel
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41CrAlMo7 Alloy Steel




Material Name


Material Name: 41CrAlMo7
Execution standard: GB/T 3077-1988

Characteristics and scope of application


High surface hardness, wear resistance and fatigue strength, and has good heat resistance and corrosion resistance, hardenability is not high. For the production of high abrasion resistance, high fatigue strength and considerable strength, high size precision processing after nitriding parts, such as imitation, cylinder liner, gear, high pressure valve, boring bar, worm, grinding spindle and so on. but not for the larger size of the parts.


Chemical Composition


C
 Si Mn S P
 		Cr Ni Cu
 Mo
0.35～0.42
 0.20～0.45
 0.30～0.60
 Max 0.035 Max 0.035
 1.35～1.65 Max 0.030 Max 0.030 0.15~0.25

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 980 Min 835 Min 14 Min 50
 Min 71
 Min 88
   Max 229 30mm

specification of heat treatment and metallurgical structure


Specification of heat treatment : hardening 940℃ water cooling, oil cooling; tempering 640℃, water cooling, oil cooling.

Delivery State


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