Good translation of the Metal Products (Shanghai) alloy structural steel companies (domestic alloy structural steel / alloy structural steel imports) 20mntib alloy structural steel / 20mntib steel plate / 20mntib steel bars / 20mntib coil / 20mntib strip / 20mntib steel pipe / 20mntib wire (good Translated Metal Products (Shanghai) Co., Ltd.) 
 20MnTiB, alloy structural steel. Unified digital code: A74202 
 Standard: GB / T 3077-1988 
 Chemical composition (mass fraction) (%) 
 Carbon C: 0.17 ~ 0.24 
 Silicon Si: 0.17 ~ 0.37 
 Mn Mn: 1.30 ~ 1.60 
 Sulfur S: Allow the residual content of ≤ 0.035 
 Phosphorus P: Allow the residual content of ≤ 0.035 
 Chromium Cr: to allow the residual content of ≤ 0.030 
 Ni: to allow the residual content of ≤ 0.030 
 Cu: to allow the residual content of ≤ 0.030 
 Ti Ti: 0.04 to 0.10 
 Boron B: 0.0005 to 0.0035 
 Mechanical Properties]. 
 Sample blank size (mm): 15 
 Heat treatment: 
 First quenching temperature (° C): 860; coolant: Oil 
 Second quenching temperature (℃): - 
 Tempering the heating temperature (° C): 200; coolant: water, air 
 Tensile strength σb (MPa): ≥ 1130 (115) 
 Yield strength σs (MPa): ≥ 930 (95) 
 The elongation δ5 (%): ≥ 10 
 Reduction of area ψ (%): ≥ 45 
 Impact energy Akv (J): ≥ 55 
 Impact the toughness the value αkv (J/cm2): ≥ 69 (7) 
 Brinell hardness (HBS100/3000) (annealing or high temperature tempered condition): ≦ 187 
 The main characteristics of 
 This is a 20CrMnTi the generation of steel has good mechanical and technological properties, critical hardenability diameter 14 ~ 27mm in oil, after normalizing the cutting performance good, the fatigue strength after the heat treatment, deformation and carburizing notch sensitivity, all in under a bending load as much as 20CrMnTi; In addition, the carburizing smaller grain growth tendency, so cool (not less than 800 ° C) quenched after carburizing heat treatment, deformation than 20CrMnTi slightly. 
 [Application Examples] 
 This steel is widely used in the manufacture of automobile and tractor cross section is smaller, medium-load of gear and carburizing parts 
 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! 

 The above information for the Division I best translation Metal Products (Shanghai) Co. publication, the counterfeit will study! Please the Honourable counterparts do not imitate Do not copy, or see all the information will list your company name counterfeit Thank you for your cooperation. Consciously abide by in order to avoid unnecessary trouble, to peer. This information is only available to customers for reference, and does not provide peer! 
 (Good translation of the Metal Products (Shanghai) Co., Ltd. published) 
 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib 20mntib