Good translation of the Metal Products (Shanghai) alloy structural steel companies (domestic alloy structural steel / alloy structural steel imports) 40mnvb alloy structural steel / 40mnvb steel plate / 40mnvb steel bars / 40mnvb coil / 40mnvb strip / 40mnvb steel pipe / 40mnvb wire (good Translated Metal Products (Shanghai) Co., Ltd.) 
 40MnVB 
 40MnVB, alloy structural steel. Unified digital code: A73402 
 Chemical composition (mass fraction) (%) 
 C: 0.37 ~ 0.44 
 Si: 0.17 ~ 0.37 
 Mn: 1.10 ~ 1.40 
 B: 0.0005 ~ 0.0035 
 V: 0.05 ~ 0.10 
 Mechanical Properties]. 
 Sample blank size (mm): 25 
 Heat treatment: 
 First quenching temperature (° C): 850; coolant: Oil 
 Second quenching temperature (℃): - 
 Tempering the heating temperature (° C): 520; coolant: water, oil 
 Tensile strength (σb / MPa): ≧ 980 
 Yield point (σs of / MPa): ≧ 785 
 ≧ 10 the Elongation (δ5 /%): 
 Section shrinkage rate (ψ /%): ≧ 45 
 Absorbed energy (Aku2 / J): ≧ 47 
 Brinell hardness (HBS100/3000) (annealing or high temperature tempered condition): ≦ 207 
 The main characteristics of 
 This steel has high strength, ductility, toughness and good hardenability in oil critical hardenability diameter of 27.5 ~ 43.5mm. Heat treatment thermal sensitivity smaller, the other cold drawing, cutting, rolling, tapping, and other process performance are excellent,? Performance than 40Cr steel. ? 
 [Application Examples] 
 This steel is quenched and generally use it instead of 40Cr or 42CrMo steel manufacturing automobiles, tractors and machine tools on the quenched and tempered, such as shafts, gears, and so on. In addition, the steel in the production of small cross-section of the parts can instead of 40CrNi steel. 
 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. 
 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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