Shanghai Jieteng Precision Mold Factory

Shanghai Jingteng Metal Group Co., Ltd.

   
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20MnCr5

20MnCr5

20MnCr5 Alloy Steel
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20MnCr5 Alloy Steel



Material Name


Material Name: 20MnCr5
Execution standard: EN 10083/1-1991

Characteristics and scope of application


Carburizing steel, strength, high toughness, hardenability excellent. Deformation of heat treatment after the performance is better than 20cr. quenching is small, good toughness at low temperature, machinability better; but the welding performance and low. Generally used in the carburizing and quenching and tempering. Carburizing parts for manufacturing and heavy large sections of the quenched and tempered parts and small section, used in the manufacture of medium load, the smaller impact of small parts, instead of using 20crni, such as gear, shaft, spindle, transmission equipment of the friction wheel, worm, the governor sleeve etc.

Chemical Composition


C
Si
Mn S P
Cr
0.17~0.22
Max 0.25
1.10~1.50
0.010~0.035 Max 0.035
1.00~1.30

Mechanical Property


Tensile strength
σb (MPa)
Yield Strength
σs 0.2 (MPa)
Elongation
δ 5 ()
reduction of crosssection area
ψ ()
pounding toughness value
αkv (J/cm2)
Hardness
(HB)
1482 1232 Min 13 57 73   357

specification of heat treatment and metallurgical structure


Specification of heat treatment : oil hardening 900℃ + 870℃ tempering 200℃
Metallurgical Structure: tempered martensite

Delivery State


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