ASTM A178 Welded Boiler Tube
ASTM A178 carbon steel tube is the specification for resistance welded carbon and carbon manganese steel boiler and superheater tubes. Mainly used to manufacture boilers, superheaters and other equipment, with excellent mechanical properties and chemical stability.
1.Materials
Grade A, Grade C, Grade D Bolier steel tube.
2.Size
OD 1/2in-5in(12.7-127mm)
3.Wall thickness
0.035in-0.360in(0.9-9.1mm)
4. Chemical Composition:
Element % | Grade A | Grade C | Grade D |
Low carbon steel | Medium Carbon Steel | Manganess Steel | |
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 | 0.035 | 0.035 | 0.015 |
Si | 0.10 Min. |
5.Mechanical Properties
Grade A | Grade C | Grade D | |
Tensile Strength Loading Ksi (Mpa) | ≥47 (325) | 60 (415) | 70 (485) |
Yield Strength Loading Ksi (Mpa) | ≥26 (180) | 37 (255) | 40 (275) |
Elongation (50mm) % | ≥35 | ≥30 | ≥30 |
