API 5L Grade B
Seamless steel pipe

Standard Trademark Chemical components Mechanical property
C Si Mn P, S Cu Ni Mo Cr V Tensile Strength
(Mpa) Yield Strength
(Mpa) Elongation
(%)
ASTM A106 B ≤ 0.30 ≥ 0.10 0.29~1.06 ≤ 0.035 ≤ 0.40 ≤ 0.40 ≤ 0.15 ≤ 0.40 ≤ 0.08 ≥ 415 ≥ 240 ≥ 30
C ≤ 0.35 ≥ 0.10 0.29~1.06 ≤ 0.035 ≤ 0.40 ≤ 0.40 ≤ 0.15 ≤ 0.40 ≤ 0.08 ≥ 485 ≥ 275 ≥ 30