A178
Standard Specification for Electric-Resistance-Welded Carbon Steel and Carbon- Manganese Steel Boiler and Superheater Tubes
A192 Standard Specification for Seamless Carbon Steel Boiler Tubes for High-Pressure Service
1, Chemical composition:
Carbon, %0.060.18
Manganese,%0.270.63
Phosphorus, max,%0.035
Sulfur, max,%0.035
Silicon, max,%0.25
A210Standard Specification for Seamless Medium-Carbon Steel Boiler and SuperheaterTubes
1, Chemical composition:
A-1C
Carbon Max 0.270.35
Manganese 0.93Max0.29-1.06
Phosphorus, max 0.0350.035
Sulfur, max0.0350.035
Silicon0.10Min0.10 Min
