seamless tube
seamless tube

seamless tube

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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

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