ASME SA210 Grade C Seamless medium-carbon steel boiler and superheater tubes
Standard: ASTM A210 / ASME SA210
Steel grade: medium-carbon steel
Material shall conform to the applicable requirements of specification A450/A450M
| Grade A-1 | Grade C | |
| Carbon, max, % | 0.27 | 0.35 |
| Manganese, % | 0.93 | 0.29-1.06 |
| Phosphorous, max, % | 0.035 | 0.035 |
| Sulfur, max, % | 0.035 | 0.035 |
| Silicon, min, % | 0.10 | 0.10 |
Process: cold drawn
The tubes cover minimum wall thickness
Application: seamless boiler tubes and boiler flues, arch and stay tubes and superheater tubes.
Dimensional range:
OD: 12.7-76.2mm
Any specific size is to be discussed before offer
The tube be 100% eddy current tested
Ultrasonic test is as option
Straightness ≤1mm/1000mm
Roughness: Ra ≤0.8
Test
- The tubes shall have a hardness test, it is not exceeding 79HRB or 143 HB for Grade A1, 89HRB or 179 HB for Grade C.
- One tension test shall be made on a specimen for lots of not more than 50 tubes. Tension tests shall be made on specimens from two tubes for lots of more than 50 tubes.
- One flattening test shall be made on specimens from each end of one finished tube from each lot, but not the one used for the flaring test.
- One flaring test shall be made on specimens from each end of the one finished tube from each lot, but not the one used for the flattening test.
- Brinell or Rockwell hardness tests shall be made on specimens from two tubes from each lot.
- Each tube shall be subjected to the hydrostatic test, or, instead of this test, a nondestructive electric test may be used when specified by the clients.
Mechanical properties
| Grade A-1 | Grade C | |
| Tensile strength, min, ksi (MPa) | 60 (415) | 70 (485) |
| Yield strength, min, ksi (MPa) | 37 (255) | 40 (275) |
| Elongation in 50mm, min, % | 30 | 30 |
Tubes shall be delivered with square cut ends. The ends are free of excessive burrs.
The tubes are bundled in the waterproof plastic sheet and packed in the wooden cases
The case is most suitable for hanging by forklift.
EN10204-3.1 MTC shall be issued
EN10204-3.2 MTC is as option
