Chemical Requirements

Seamless Line Pipe:

SpecificationGradeC MaxMn MaxP MaxS Max
API 5L PSL 1"1"A0.220.900.0300.030
B0.281.200.0300.030
X420.281.300.0300.030
X45,X52,X560.281.400.0300.030
X60,X65,X700.281.400.0300.030
API 5L PSL 2B0.241.200.0250.015
X420.241.300.0250.015
X46,X52,X560.241.400.0250.015
X60,X560.241.400.0250.015
X70,X800.241.400.0250.015

For each reduction of 0.01% below the specified maximum carbon content, an increase of 0.05% above the specified maximum manganese content is permissible, up to a maximum of 1.50% for Grades X42 through X52, up to a maximum of 1.65% for Grades higher than X52 but less than X70, and up to 2.00% for Grades X70 and higher.

Columbium [niobium], vanadium, titanium, or combinations therof may be used by agreement between purchaser and manufacturer.
Columbium [niobium], vanadium, titanium, or combinations therof may be used at the discretion of the manufacturer.
The sum of the columbium [nobium], vanadium, and titanium contents shall not exceed 0.15%.
Other chemical compositions may be furnished by agreement between purchaser and manufacturer, providing that the limits of Footnote d and the tabular limits for phosphorus and sulfer are met.