Mechanical properties of 20CrMnMo related chemical composition of Wugang marine shipping company
20CrMnMo, executive standard: GB/T3077-1999
20CrMnMo is a kind of alloy structural steel grades. Unified digital code: A34202.
Chemical composition (%%uFF09:
Carbon C:0.17 ~ 0.23
Silicon Si:0.17 ~ 0.37
Mn Mn:0.90 ~ 1.20
S: allow residual sulfur content less than 0.035
P P: allow residual content less than 0.035
Chrome Cr:1.10 ~ 1.40
Ni Ni: allow residual content less than 0.030
Cu: allow residual copper content is less than 0.030
Mo Mo:0.20 ~ 0.30
Mechanical properties:
Tensile strength (b/MPa): more than 1180 yield point (s/MPa): 885
Elongation (delta 5/%%uFF09: = 10
Section shrinkage (or /%%uFF09: = 45
Impact absorbing energy (Aku2/J): 55
Brinell hardness (HBS100/3000) (high temperature annealing or tempering): less than 217[2]
Delivery status: heat treatment (annealing or normalizing and tempering) or heat treatment delivery, delivery status should be indicated in the contract.
Main characteristics:
High strength high strength carbon steel. The strength is higher than 15CrMnMo, the plasticity and toughness are slightly lower, and the quenching and mechanical properties are higher than that of 20CrMnTi, which has good comprehensive mechanical properties and low temperature impact toughness after quenching and tempering. After carburizing and quenching, it has high bending strength and wear resistance, but it is easy to crack when grinding. The welding is not good, suitable for resistance welding, preheating before welding, after welding, tempering treatment. Good machinability and machinability.
20CrMnMo is a kind of alloy structural steel which is stipulated by national standard, and it is a kind of high strength steel.
Advanced carburizing heat treatment, quenching heating temperature of 850 degrees Celsius, oil cooling; 200. It has good comprehensive mechanical properties and low temperature impact toughness after quenching and tempering, and has high bending strength and wear resistance after carburizing and quenching. Used in the manufacture of high hardness, high strength, high toughness of the larger important carburizing parts, such as crankshaft, camshaft, connecting rod, gear shaft, gear, pin, etc..
After carburizing and quenching, the hardness is high, and it is easy to crack.
Wugang City, the ship supplies Co., Ltd.
Contact: Wang Ziru
Cell phone: 15639950000
Telephone: 0375-8332206
Fax: 03758332225
QQ:915507730
Address: Henan Province, Wugang City Industrial Zone
URL: http://www.wgzcgt.com
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