Good translation of the Metal Products (Shanghai) alloy structural steel company (domestic alloy structural steel / imports of alloy structural steel) 50crni alloy structural steel / steel plate 50crni / 50crni steel bars / 50crni coil / 50crni, steel strip / 50crni steel pipe / 50crni wire (good Translated Metal Products (Shanghai) Co., Ltd.) 
 Standard: (GB / T 3077-1988) 
 Steel 50CrNi 
 Features and Scope: 
 Senior quenched and tempered structural steel, high strength, high ductility and toughness, obtained after heat treatment uniform microstructure group 
 Organization and mechanical properties. Used in the manufacture of cross-section large and important parts of the quenched and tempered, such as internal combustion engine crankshaft, heavy machine 
 The spindle, gears, bolts, and so on. 
 Chemical composition 
 Chemical composition: omega /% 
 C 0.47 ~ 0.54 
 Si 0.17 ~ 0.37 
 Mn 0.50 ~ 0.80 
 S ≤ 0.035 
 P ≤ 0.035 
 Cr 0.45 ~ 0.75 
 Ni 1.00 ~ 1.40 
 Cu ≤ 0.030 
 Mechanical properties 
 Mechanical properties: 
 Tensile strength σb (MPa): ≥ 1080 (110) 
 Yield strength σs (MPa): ≥ 835 (85) 
 Elongation δ5 (%): ≥ 8 
 Reduction of area ψ (%): ≥ 40 
 Impact energy Akv (J): ≥ 39 
 The impact toughness αkv (J/cm2): ≥ 49 (5) 
 Hardness: ≤ 255HB 
 Sample size: the sample blank size of 25mm 
 Heat treatment process 
 Heat treatment and microstructure: 
 Standardized heat treatment: hardening 820 ° C, cold oil; tempering 500 ° C, water-cooled, oil cooled. 
 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! If necessary other material, please contact us. 
 Customers in ordering materials, the need to sample customers, please note, MOQ: 50KG (包邮) the number of excellent price, welcome you to call to order this material Our commitment: quality assurance Cheaper prices, excellent! Honesty! 

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 (Good translation of the Metal Products (Shanghai) Co., Ltd. published) 
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