Good translation of the Metal Products (Shanghai) alloy structural steel companies (domestic alloy structural steel / imports of alloy structural steel) 20mncr5 alloy structural steel / steel plate 20mncr5 / 20mncr5 steel bars / 20mncr5 coil / 20mncr5 strip / 20mncr5 steel pipe / 20mncr5 wire (good Translated Metal Products (Shanghai) Co., Ltd.) 
 20MnCr5 
 Material: alloy structural steel 
 Grade: 20MnCr5 
 Chemical composition: 
 Carbon C: 0.17 ~ 0.22 
 Silicon Si: ≤ 0.25 
 Mn Mn: 1.10 ~ 1.50 
 Sulfur S: 0.010 to 0.035 
 Phosphorus P: ≤ 0.035 
 Chromium Cr: 1.00 ~ 1.30 
 Mechanical properties: 
 Σb (MPa), tensile strength: 1482 
 Conditions yield strength σ0.2 (MPa): 1 232 
 The elongation δ5 (%): 13 
 Section shrinkage ψ (%): 57 
 Impact toughness αku (J/cm2): 73 
 Hardness: 357HB 
 Sample size: a test material 
 Heat treatment and microstructure: 
 Heat Treatment Specification: 900 ° C oil quenching +870 ° C oil quenching, tempering 200 ℃. 
 Microstructure: tempered martensite. 
 ● Use: 
 Manufacture of mercury in the working conditions of the high-speed and high bending load shaft and connecting rod, gear mercury, without a strong impact load water Mercury rotor, clutch, high pressure container cover bolts. 
 The company provides domestic and imported alloy structural steel varieties, complete specifications, special specifications can be customized processing. Division I and the original certificates, material certificates (chemical composition, mechanical properties) of the class parameters Please pay attention to obtain a copy of the public are welcome to the user to inquire Order, the Company will be free shipping! Other materials, if necessary, welcome to inquire order. 
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