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 SuperheaterTubes
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