ASTM A106 seamless steel pipe for high temperature operation

Steel grade and chemical composition( %)

Steel grade

carbon≤

manganese

phosphorus≤

sulfur≤

silicon≤

chromium≤

copper≤

molybdenum≤

nickel≤

Alum≤

A

0.25

0.27~0.93

0.035

0.035

0.10

0.40

0.40

0.15

0.40

0.08

B

0.30

0.29~1.06

0.035

0.035

0.10

0.40

0.40

0.15

0.40

0.08

Mechanical properties

Steel grade

tensile strength(Mpa)

Yield strength(Mpa)

Elongation (%)

Delivery state

A

≧330

≧205

≧20

Annealed

B

≧415

≧240

≧20

Annealed