GB/T 20CrMnTi Forged alloy round bar Delivery state

GB/T 20CrMnTi Forged alloy round bar is characterized by good performance, high hardenability, carburizing quenching after a hard and wear-resistant surface and tough core portion having a higher low temperature impact toughness and weldability medium after normalizing machinable good. GB/T 20CrMnTi Forged alloy round bar for the manufacture of a cross-sectional <30mm to withstand high-speed, medium or heavy loads, impact and friction of the important parts, such as gears, ring gear, the gear shaft crosshead,etc.
GB/T 20CrMnTi Forged alloy round bar chemical composition
C: 0.17 ~ 0.23 Si: 0.17 ~ 0.37 Mn: 0.80 ~ 1.10 Cr: 1.00 ~ 1.30 S: allow the residual content ≤0.035 P: allow the residual content ≤0.035 Ni: to allow the residual content ≤0.030 Cu: to allow the residual content ≤0.030 Ti: 0.04 ~ 0.10
GB/T 20CrMnTi Forged alloy round bar Mechanical properties:
Tensile strength σb (MPa): ≥1080 (110) Yield strength σs (MPa): ≥835 (85) Elongation δ5 (%): ≥1 Reduction of area ψ (%): ≥45 impact energy Akv (J): ≥55 impact toughness αkv (J / cm2): ≥69 (7) Hardness: ≤217HB sample size: Sample size is 15mm 20CrMnTi rough density : 7.8 × 103kg / m3
Modulus of elasticity: 207Gpa Poisson's ratio: 0.25 Thermal conductivity: 1.26 × 10-5 (1 / ℃)
Delivery state : Hot forged +Peeled +Normalizing
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