Steel grade 16MnDR under specification GB 3531 is mainly rolling as steel plates for low temperature boiler and pressure vessel usage.
GB 3531 16MnDR plate shall be done low temperature impacting test under minus 40 centigrade for thickness equal and below 60mm, for heavy thickness above 60mm, this temperature can be higher as minus 30 centigrade.
Low temperature boiler and pressure vessel steel GB 3531 16MnDR plate chemical composition (max):
| C | Si | Mn | Ni | P | S | Alt (min.) |
| 0.20 | 0.15-0.50 | 1.20-1.60 | 0.40 | 0.02 | 0.01 | 0.02 |
Low temperature boiler and pressure vessel steel GB 3531 16MnDR plate mechanical property:
| Grade | Thick /mm |
Yield Rm/ Mpa(N/mm2) |
Tensile ReL/ Mpa(N/mm2) |
Elongation A/% |
Impact test /°C | Impact strength KV2/J |
| Not less than | Not less than | |||||
| 16MnDR | 6~16 | 490-620 | 315 | 21 | -40 | 47 |
| >16~36 | 470-600 | 295 | 21 | -40 | 47 | |
| >36~60 | 460-590 | 285 | 21 | -40 | 47 | |
| >60~100 | 450-580 | 275 | 21 | -30 | 47 | |
| >100~120 | 440-570 | 265 | 21 | -30 | 47 | |
Low temperature boiler and pressure vessel steel GB 3531 16MnDR plate application:
Low temperature boiler and pressure vessel steel GB 3531 16MnDR plates are used in pressure vessel, boiler, storage tanks and heat exchanger in oil, gas project.
Technical requirements & additional services of GB 3531 16MnDR plate:
♦ High tension test
♦ Cutting and welding as per end user’s demands
♦ Simulated post-welded heat treatment (PWHT)
♦ Rolling under standard NACE MR-0175 (HIC+SSC)
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Ultrasonic test under GB/T2970, JB4730, EN 10160, ASTM A435, A577, A578
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