CARBON STEEL SEAMLESS PIPE
Carbon steel pipes are divided into hot rolled and cold rolled (pulled) steel pipes.
Chemical Composition of JIS G3461 STB 510 pipe
| Standard:JIS G3461 | Grade | Chemical Composition Limits (%) | ||||
| C | Si | Mn | P. | S | ||
| STB 510 | ≤ 0.25 | ≤ 0.35 | 1.00-1.50 | ≤ 0.035 | ≤ 0.035 | |
Note:Where required by the purchaser, Si may be designated as 0.10 to 0.35%.
Mechanical Properties of JIS G3461 STB 510 steel pipe
| Grade | Tensile Property (N/mm2) | Yield Point or Yield Strength (N/mm2) | Rockwell hardness HRB | Elongation (%) | ||
| OD ≥20 mm | 10 mm ≤OD <20 mm | OD <10 mm | ||||
| Longitudinal | Transverse | Transverse | ||||
| STB 510 | ≥ 510 | ≥ 295 | 92 max. | ≥ 25 | ≥ 20 | ≥ 17 |
Note:The above table is only applicable for heat exchanger carbon steel tubes. The buyer can appoint the upper limit value of tensile strength. The upper limit value of tensile strength is the above shown value plus 120 N/mm2.

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