Type S (seamless) |
Type E | Type F | |||||
(electric- resistance welded) |
(furnace- welded pipe) |
||||||
Grade A | Grade B | Grade A | Grade B | Grade A | |||
Carbon max. % | 0.25 | 0.30* | 0.25 | 0.30* | 0.3 | ||
Manganese % | 0.95 | 1.2 | 0.95 | 1.2 | 1.2 | ||
Phosphorous, max. % | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | ||
Sulfur, max. % | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 | ||
Copper, max.% | 0.40 | 0.40 | 0.40 | 0.40 | 0.4 | ||
Nickel, max. % | 0.40 | 0.40 | 0.40 | 0.40 | 0.4 | ||
Chromium, max. % | 0.40 | 0.40 | 0.40 | 0.40 | 0.4 | ||
Molybdenum, max. % | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | ||
Vanadium, max. % | 0.08 | 0.08 | 0.08 | 0.08 | 0.08 |