ASTM A355 Seamless Alloy Steel Pipe

Astm a335 standard specication for seamless ferritic alloy-steel pipe for high-temperature service. This specication covers nominal(average) wall seam-less alloy-steel pipe intended for high-temperatureservice.Pipe ordered to this specication shall be suitable for bending,anging(vanstoning),and similar forming operations,and for fusion welding.Selection will depend upon design,service conditions,mechanical properties,andhigh-temperature char-acteristics. 

Chemical Composition  Grade  C  Mn  P  S  Si  Mo  P1  0.10-0.20  0.30-0.80  0.025  0.025  0.10-0.50  0.44-0.65  P2  0.10-0.20  0.30-0.61  0.025  0.025  0.10-0.30  0.44-0.65  P5  0.15max  0.30-0.60  0.025  0.025  0.50max  0.45-0.65  P5b  0.15max  0.30-0.60  0.025  0.025  1.00-2.00  0.45-0.65  P5c  0.12max  0.30-0.60  0.025  0.025  0.50max  0.45-0.65  P9  0.15max  0.30-0.60  0.025  0.025  0.25-1.00  0.90-1.10  P11  0.05-0.15  0.30-0.60  0.025  0.025  0.50-1.00  0.44-0.65  P12  0.05-0.15  0.30-0.61  0.025  0.025  0.50max  0.44-0.65  P15  0.05-0.15  0.30-0.60  0.025  0.025  1.15-1.65  0.44-0.65  P21  0.05-0.15  0.30-0.60  0.025  0.025  0.50max  0.80-1.06  P22  0.05-0.15  0.30-0.60  0.025  0.025  0.50max  0.87-1.13  P23  0.04-0.10  0.10-0.60  0.030max  0.010max  0.50max  0.05-1.30 Mechanical Properties  Mechanical properties  P1,P2  P12  P23  P91  P92,P11  P122  Tensile strength  380  415  510  585  620  620  Yield strength  205  220  400  415  440  400