Material Name: SUP10 spring steel
Executive Standard: JIS G4801-2005
China Standard: GB / T 3077-1999
American Standard: A29M: 2005
● Features and application:
SUP10 has good mechanical properties and process performance, high hardenability, adding vanadium to steel the grain refinement, reduce heat sensitivity, increased strength and toughness, high fatigue strength, yield ratio is high, but poor welding, cold plastic deformation due to the low. SUP10 is a relatively high spring, as a large section of the important spring and high-load operating temperature <300 ℃ of the valve spring, piston spring, valve spring. ● Chemical Composition:
Carbon C: 0.47 ~ 0.55
Si Si: 0.15 ~ 0.35
Manganese Mn: 0.65 ~ 0.95
Sulfur S: ≤ 0.030
Phosphorus P: ≤ 0.030
Chromium Cr: 0.80 ~ 1.10
Ni-Ni: ≤ 0.35
Copper Cu: ≤ 0.25
Vanadium V: 0.15 ~ 0.25
● Mechanical Properties:
Tensile strength σb (MPa): ≥ 1274 (130)
Yield strength σs (MPa): ≥ 1127 (115)
Elongation δ5 (%): ≥ 10
Reduction of area ψ (%): ≥ 40
Hardness: hot, ≤ 321HB; cold-drawn + heat treatment, ≤ 321HB
