Seamless medium carbon steel boiler and superheater tubes.
Chemical Properties:
| Carbon: 0.27 | Silicon: 0.10 |
| Manganese: 0.93 max | Nickel: n/a |
| Potassium: 0.035 | Chromium: n/a |
| Sulfur: 0.035 | Molybdenum: n/a |
Mechanical Properties:
Tensile Strength:
ksi: 60
MPa: 414
Yield:
ksi: 37
MPa: 255
Elongation in 2in. or 50mm, min. %: 30
Max. Hardness Rockwell B: 79
