Good translation of the Metal Products (Shanghai) alloy structural steel company (domestic alloy structural steel / imports of alloy structural steel) 15Cr alloy structural steel / 15Cr steel plate / 15Cr steel bars / 15Cr steel coils / 15Cr steel strip / 15Cr steel pipe / 15Cr steel wire (good Translated Metal Products (Shanghai) Co., Ltd.) 
 15Cr alloy structural steel. Unified digital Code: A201525 
 Standard: GB / T 3077-1988 
 Chemical composition (mass fraction) (%) 
 Carbon C: 0.12 ~ 0.18 
 Silicon Si: 0.17 ~ 0.37 
 Mn Mn: 0.40 ~ 0.70 
 Sulfur S: Allow the residual content of ≤ 0.035 
 Phosphorus P: Allow the residual content of ≤ 0.035 
 Chromium Cr: 0.70 ~ 1.00 
 Ni: to allow the residual content of ≤ 0.030 
 Cu: to allow the residual content of ≤ 0.030 
 Mechanical Properties]. 
 Sample blank size (mm): 15 
 Heat treatment: 
 First quenching temperature (° C): 880; coolant: water, oil 
 Second quenching temperature (℃): 780 ~ 820; coolant: water, oil 
 Tempering the heating temperature (° C): 200; coolant: water, air 
 Tensile strength σb (MPa): ≥ 735 (75) 
 Yield strength σs (MPa): ≥ 490 (50) 
 Elongation δ5 (%): ≥ 11 
 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): ≦ 179 
 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. 
 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. 
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