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GB/T 713 Q245R steel plate, also written as Q245R pressure vessel steel plate, GB713 Q245R, Q245R boiler steel plate, is a C-Mn boiler and pressure vessel plate under GB/T 713 / GB/T 713.2 with 245 MPa minimum yield for thickness 3–16 mm, tensile 400-520 MPa in that band and Charpy V-notch at 0°C. Gangsteel (HENAN GANG IRON AND STEEL) produces and exports Q245R plates cut to size with mill test certificates for boilers, vessels and heat exchangers.
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 Q245R. Verify the contracted edition and purchase-order supplements before ordering.
| Element | C | Si | Mn | P | S | Alt |
|---|---|---|---|---|---|---|
| Q245R, % | 0.20 max | 0.35 max | 0.50-1.00 | 0.025 max | 0.015 max | 0.020 min |
| Element | Cu | Ni | Cr | Mo | Nb+V+Ti | — |
|---|---|---|---|---|---|---|
| Q245R, % | 0.30 max | 0.30 max | 0.30 max | 0.08 max | ≤0.050 if added | — |
Per GB/T 713 / GB/T 713.2 heat analysis. For t>60 mm, Mn upper limit may rise to 1.20%. Product analysis tolerances per GB/T 713.1.
| Thickness | Yield ReL, min | Tensile Rm | Elongation A, min | Impact KV2 |
|---|---|---|---|---|
| 3–16 mm | 245 MPa | 400-520 MPa | 25% | 0°C, ≥31 J |
| >16–36 mm | 235 MPa | 400-520 MPa | 25% | 0°C, ≥31 J |
| >36–60 mm | 225 MPa | 400-520 MPa | 25% | 0°C, ≥31 J |
| >60–100 mm | 205 MPa | 390-510 MPa | 24% | 0°C, ≥31 J |
| >100–150 mm | 185 MPa | 380-500 MPa | 24% | 0°C, ≥31 J |
Per GB/T 713.2. Use Rp0.2 when yield point is not distinct. -20°C impact may replace 0°C by agreement.
Hot-rolled, controlled-rolled or normalized per thickness and order. Killed steel. Tensile, Charpy at 0°C and bend. Optional UT, Z-direction, HIC/NACE, elevated-temperature tensile and EN 10204 3.1/3.2 MTC.
Common supply about 6–150 mm, width 1500-4000 mm, length 6000-18000 mm, cut to size.
Low-to-medium pressure boilers, vessels, heat exchangers and tanks in the 245 MPa yield class under GB/T 713.
| Standard | Comparable grade (approximate) |
|---|---|
| GB/T 713 | Q245R |
| ASTM/ASME | ASTM A516 / A516 Grade 70 / SA516 Gr.70 (approx.; dual cert by agreement) |
| EN 10028-2 | P265GH / P355GH family (approx.) |
| Related GB/T 713 | Q345R | Q370R | Q420R | Q460R | 18MnMoNbR |
Equivalents are engineering references only. Dual certification requires the stricter combined limits on the PO and MTC.
It is a C-Mn boiler and pressure vessel steel under GB/T 713 / GB/T 713.2. a C-Mn boiler and pressure vessel plate under GB/T 713 / GB/T 713.2 with 245 MPa minimum yield for thickness 3–16 mm, tensile 400-520 MPa in that band and Charpy V-notch at 0°C. Gangsteel lists the official mill/certificate grade as Q245R. See the full GB/T 713 Q245R page for chemistry and mechanical tables.
245 MPa min at 3–16 mm, reducing with thickness to about 185 MPa above 100 mm. Typical tensile bands are shown in the mechanical properties table on this page; confirm the contracted GB/T 713.2 edition before design.
0°C (standard); -20°C available by agreement. Always state the required Charpy temperature and energy on the purchase order.
Hot-rolled, controlled-rolled or normalized per thickness and order. Killed steel. Tensile, Charpy at 0°C and bend. Optional UT, Z-direction, HIC/NACE, elevated-temperature tensile and EN 10204 3.1/3.2 MTC.
All sit in the GB/T 713.2 non-alloy / microalloy vessel family. Sister carbon grades: Q345R / Q370R / Q420R / Q460R. Hub: GB/T 713 Steel Plate.
No. They are often compared for design but chemistry, impact and delivery rules differ. See ASTM A516 and A516 Grade 70 / SA516 Gr.70. Dual certification needs the stricter combined limits on the PO and MTC.
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.
Common supply about 6–150 mm, width 1500-4000 mm, length 6000-18000 mm, cut to size. 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
