seamless tube
Aisi4140 seamless steel pipe chemical composition:
Carbon (c) 0.38 ~ 0.45
Silicon (SI) 0.17 ~ 0.37
Manganese (MN) 0.50 ~ 0.80
Phosphorus (P) ≤ 0.035
Sulfur (s) ≤ 0.035
Chromium (CR) 0.9 ~ 1.20
Nickel (Ni) ≤ 0.30
Molybdenum (MO) 0.15 ~ 0.25
Copper (Cu) ≤ 0.30
Mechanical properties of aisi4140 seamless steel pipe
Tensile strength σ b (MPa):≥1080(110)
yield strength σ s (MPa):≥930(95)
Elongation δ 5 (%):≥12
Reduction of area ψ (%):≥45
Impact energy Akv (J): ≥ 63
Impact toughness value α kv (J/cm2):≥78(8)
Hardness: ≤ 217hb