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A178 A192 A210 SeamlessWelded Carbon Steel Boiler Tubes for High-PressureBoiler and Superheater

A178

Standard Specification for Electric-Resistance-Welded Carbon Steel and Carbon- Manganese Steel Boiler and Superheater Tubes

1, Chemical composition:

A              C             D

Carbon                   0.06-0.18       0.35Max     0.27Max

Manganese               0.27-0.63       0.8Max      1.00-1.50

Phosphorus, max           0.035          0.035        0.030 

Sulfur, max               0.035           0.035        0.015

Silicon                   ....         ......            0.10Min

A192 Standard Specification for Seamless Carbon Steel Boiler Tubes for High-Pressure Service

1, Chemical composition:

Carbon,               %0.06--0.18

Manganese,            %0.27--0.63

Phosphorus, max,       %0.035

Sulfur, max,            %0.035

Silicon, max,            %0.25

A210Standard Specification for Seamless Medium-Carbon Steel Boiler and SuperheaterTubes1

1, Chemical composition:

A-1          C       

Carbon Max       0.27       0.35 

Manganese       0.93Max    0.29-1.06 

Phosphorus, max   0.035      0.035  

Sulfur, max        0.035      0.035 

Silicon            0.10Min   0.10 Min