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ASTM A178 Electric resistance welded carbon steel and carbon mangaese steel boiler and superheater tubes
Applications: for Boilers,Superheaters, Heat-Exchangers, Condensers, Boiler flues, superheater flues and safe ends
Material: Carbon Steel and carbon manganese steel
Production: Electric Resistance Welding
Size range: O.D.:6-127mm W.T.:0.9-9.1mm L: according to customer requirement
| Steel Grade and Chemical Compositions: | |||||
| Element | Grade A, Low-Carbon Steel | Grade C, Medium-Carbon Steel | Grade D, Carbon-Manganese Steel | ||
| Carbon | 0.06-0.18 | 0.35 max | 0.27 max | ||
| Manganese | 0.27-0.63 | 0.80 max | 1.00-1.50 | ||
| Phosphorus, max | 0.035 | 0.035 | 0.030 | ||
| Sulfur, max | 0.035 | 0.035 | 0.015 | ||
| Silicon | - | - | 0.10 min | ||
| Mechanical Properties | Grade A | Grade C | Grade D |
| Tensil Streghth: min ksi[Mpa] | 47[325] | 47[415] | 70[485] |
| Yield Point: min ksi[Mpa] | 26[180] | 37[255] | 40[275] |
| Elongation: | ≥35% | ≥30% | ≥30% |
| Tolerance for OD and WT(SA-450/SA-450M) | < Sell
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