EN 10028 and SA516 quick reference
Export orders and foreign-owned projects drag in EN 10028 and ASME/ASTM. The grade names look intimidating — P355GH, P355NL2, 16Mo3, SA516 Gr.70 — but the logic mirrors Chinese vessel plate: similar chemistry, same duty, different paperwork. One reference table below does most of the untangling.
How the EN 10028 family is organised
- EN10028-2: non-alloy and alloy steels with elevated-temperature properties — P265GH, P295GH, P355GH, 16Mo3, 13CrMo4-5; roughly China's Q245R, Q345R, 15CrMoR
- EN10028-3: normalized fine-grain steels — P275NH/NL1/NL2, P355N/NH/NL1/NL2; near Q370R and 16MnDR territory
- EN10028-4: low-temperature nickel steels — 11MnNi5-3, 13MnNi6-3, X12Ni5; the 09MnNiDR / 08Ni3DR band
- EN10028-6: quenched-and-tempered fine-grain steels — P355Q through P690QL2; the Q+T vessel and high-strength band
Cross-reference quick table
| China GB/T713 | Europe EN10028 | USA ASME/ASTM | Notes |
|---|---|---|---|
| Q245R | P265GH (-2) | SA516 Gr.60 / SA285 C | low-to-medium pressure |
| Q345R | P355GH (-2) | SA516 Gr.70 | the everyday workhorse |
| Q370R | P355N / P355NH (-3) | SA537 Cl.1 ref. | fine-grain higher strength |
| 15CrMoR | 13CrMo4-5 (-2) | SA387 Gr.12 Cl.2 | hydrogen / high temp |
| 12Cr2Mo1R | 10CrMo9-10 (-2) | SA387 Gr.22 Cl.2 | hydrofining service |
| 16MnDR | P355NL2 (-3) | SA537 Cl.2 ref. | -40°C low temperature |
| 09MnNiDR | 13MnNi6-3 (-4) | SA203 Gr.B ref. | -70°C nickel steel |
| — | P690QL2 (-6) | SA517 ref. | high-strength Q+T |
Read the table as guidance, not equivalence: impact temperatures, heat-treatment fine print and UT standards differ. The safe export route is to order directly to the target standard — mills melt and test to EN or ASME rules and issue EN10204 3.1 or 3.2 certificates.
Three common add-ons in export orders
Expect these on export vessel plate: low-temperature impact at the design test temperature; condition stated as N, N+T or Q+T; and Z properties with UT to EN10160 or ASME SA435. Certificates take EN10204 3.1 (works' authorised inspector) or 3.2 (third-party countersigned); class documents follow the owner's nominated society.