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GB/T 713 12Cr2Mo1R steel plate, also written as 12Cr2Mo1R pressure vessel steel plate, GB713 12Cr2Mo1R, 2.25Cr-1Mo plate, is a 2.25Cr-1Mo alloy boiler and pressure vessel plate under GB/T 713 / GB/T 713.2, typically N+T (temper ≥680°C), with about 310 MPa min yield and tensile 520-680 MPa for severe elevated-temperature and hydrogen service. Gangsteel (HENAN GANG IRON AND STEEL) produces and exports 12Cr2Mo1R plates cut to size with MTC for 2.25Cr-1Mo vessels and hydrotreaters.
Data source: Per GB/T 713 / GB/T 713.2-2023 (Steel plate, sheet and strip for pressure equipments — Part 2: Non-alloy and alloy steel with specified temperature properties; buyers still search “GB/T 713”). Official mill/certificate grade is 12Cr2Mo1R. Verify the contracted edition and purchase-order supplements before ordering.
| Element | C | Si | Mn | P | S | Cr |
|---|---|---|---|---|---|---|
| 12Cr2Mo1R, % | 0.08-0.15 | 0.50 max | 0.30-0.60 | 0.020 max | 0.010 max | 2.00-2.50 |
| Element | Mo | Cu | Ni | — | — | — |
|---|---|---|---|---|---|---|
| 12Cr2Mo1R, % | 0.90-1.10 | 0.30 max | 0.30 max | — | — | — |
Per GB/T 713.2 heat analysis. Classic 2.25Cr-1Mo chemistry; often compared with ASTM A387 Grade 22.
| Thickness | Yield ReL, min | Tensile Rm | Elongation A, min | Impact KV2 |
|---|---|---|---|---|
| 6–200 mm (usual band) | 310 MPa | 520-680 MPa | 19% | 20°C / per edition |
Per GB/T 713.2. N+T; temper ≥680°C. Confirm full thickness/impact table on the order.
Normalized + tempered (temper ≥680°C). Optional PWHT simulation, UT, hardness and 3.1/3.2 MTC. Hydrogen-service appendix (GB/T 713.2 App. B) by agreement.
Commonly 6–150+ mm (confirm mill max), width 1500-4000 mm, length 6000-18000 mm.
Hydrotreaters, hot-wall pressure vessels and elevated-temperature equipment in the 2.25Cr-1Mo class.
| Standard | Comparable grade (approximate) |
|---|---|
| GB/T 713 | 12Cr2Mo1R |
| ASTM/ASME | ASTM A387 / SA387 / A387 Grade 12 (approx. for Cr-Mo class) |
| EN 10028-2 | 13CrMo4-5 (approx. for 1Cr-Mo class) |
| Related GB/T 713 | Q245R | Q345R | Q370R | Q420R | Q460R |
Equivalents are engineering references only. Dual certification requires the stricter combined limits on the PO and MTC.
It is a Cr-Mo boiler and pressure vessel steel under GB/T 713 / GB/T 713.2. a 2.25Cr-1Mo alloy boiler and pressure vessel plate under GB/T 713 / GB/T 713.2, typically N+T (temper ≥680°C), with about 310 MPa min yield and tensile 520-680 MPa for severe elevated-temperature and hydrogen service. Gangsteel lists the official mill/certificate grade as 12Cr2Mo1R. See the full GB/T 713 12Cr2Mo1R page for chemistry and mechanical tables.
About 310 MPa min in the usual published thickness band. Typical tensile bands are shown in the mechanical properties table on this page; confirm the contracted GB/T 713.2 edition before design.
20°C class per GB/T 713.2 unless otherwise ordered. Always state the required Charpy temperature and energy on the purchase order.
Normalized + tempered (temper ≥680°C). Optional PWHT simulation, UT, hardness and 3.1/3.2 MTC. Hydrogen-service appendix (GB/T 713.2 App. B) by agreement.
12Cr2Mo1R is in the Cr-Mo alloy family under GB/T 713.2. Related alloy grades: 15CrMoR / 14Cr1MoR / 12Cr1MoVR / 12Cr2Mo1VR / 07Cr2AlMoR / 18MnMoNbR / 13MnNiMoR. Carbon workhorses remain Q345R / Q245R.
They are approximate engineering counterparts only. Compare with ASTM A387 / SA387 and EN 10028-2 13CrMo4-5. Dual certification requires the stricter combined limits.
EN 10204 3.1 as standard; 3.2 with third-party inspection when ordered. MTC lists heat analysis, mechanical tests, delivery condition and any optional UT / Z / HIC / elevated-temperature results.
Commonly 6–150+ mm (confirm mill max), width 1500-4000 mm, length 6000-18000 mm. Browse the GB/T 713 hub for the full grade list.
GB/T 713 Steel Plate | Q345R | Q245R | 15CrMoR | ASTM A516 | ASTM A387 | ASTM A537 | Pressure Vessel Steel Plate | Boiler Steel Plate
