ASTM A178 is for electric-resistance-welded carbon steel and carbon-manganese steel boiler and superheater tubes
A178 Chemical Properties:
|
Chemical Properties |
Grade A |
Grade C |
Grade D |
|
C |
0.06-0.18 |
0.35 max |
0.27 max |
|
Mn |
0.27-0.63 |
0.80 max |
1.00-1.50 |
|
P |
0.035 |
0.035 |
0.030 |
|
S |
0.04 |
0.035 |
0.015 |
|
Si |
- |
- |
0.10 min |
A178 Tensile Requirements:
|
Grade |
Tensile Point (Mpa) |
Yield Point (Mpa) |
Elongation (%) in 2 in. or 50mm |
|
Grade C |
255 |
415 |
30 |
|
Grade D |
75 |
485 |
30 |
