Good translation of the Metal Products (Shanghai) alloy structural steel company (domestic alloy structural steel / imports of alloy structural steel) 35SiMn alloy structural steel / steel plate 35SiMn / 35SiMn steel bars / 35SiMn coil / 35SiMn, steel strip / 35SiMn steel pipe / 35SiMn wire (good Translated Metal Products (Shanghai) Co., Ltd.) 
 35SiMn 
 35SiMn, alloy structural steel. Unified digital code: A10352 
 Standard: GB / T 3077-1988 
 Chemical composition (mass fraction) (%) 
 Carbon C: 0.32 ~ 0.40 
 Silicon Si: 1.10 ~ 1.40 
 Mn Mn: 1.10 ~ 1.40 
 Sulfur S: allow the residual content of ≤ 0.35 
 Phosphorus P: allow the residual content of ≤ 0.35 
 Chromium Cr: Allow the residual content of ≤ 0.30 
 Ni: to allow the residual content of ≤ 0.30 
 Cu: to allow the residual content of ≤ 0.30 
 Mechanical Properties]. 
 Sample blank size (mm): 25 
 Heat treatment: 
 First quenching temperature (° C): 900; coolant: water 
 Second quenching temperature (℃): - 
 Tempering the heating temperature (° C): 570; coolant: water, oil 
 Tensile strength σb (MPa): ≥ 885 (90) 
 Yield strength σs (MPa): ≥ 735 (75) 
 The elongation δ5 (%): ≥ 15 
 Reduction of area ψ (%): ≥ 45 
 Impact energy Akv (J): ≥ 47 
 The impact toughness αkv (J/cm2): ≥ 59 (6) 
 Brinell hardness (HBS100/3000) (annealing or high temperature tempered condition): ≦ 229 
 Delivery status: to heat treatment (normalizing, annealing, or high-temperature tempering) or heat treatment state of delivery, the delivery status should be indicated in the contract. 
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