GB/T 3531 15MnNiNbDR Steel Plate | 15MnNiNbDR Low-Temp Plate

GB/T 3531 15MnNiNbDR steel plate, also written as 15MnNiNbDR pressure vessel steel plate, GB3531 15MnNiNbDR, 15MnNiNbDR low-temperature steel plate, GB/T 713.3 15MnNiNbDR, is a Nb-microalloyed Mn-Ni low-temperature pressure vessel plate under GB/T 3531 / GB/T 713.3, with higher strength (yield about 370 MPa thin) and typical Charpy at -50°C. Gangsteel (HENAN GANG IRON AND STEEL) produces and exports 15MnNiNbDR plates for higher-strength low-temperature vessels with MTC.

Data source: Per GB/T 3531-2014 (Steel plates for low temperature pressure vessels; buyers still search “GB/T 3531” / “GB3531”). The 2023 succession splits low-temp coverage into GB/T 713.3 (low-alloy low-temp) and GB/T 713.4 (nickel alloy low-temp). Official mill/certificate grade is 15MnNiNbDR. Verify the contracted edition and purchase-order supplements before ordering.

GB/T 3531 15MnNiNbDR Chemical Composition (Heat Analysis)

Heat analysis per GB/T 3531-2014 / GB/T 713.3. Nb microalloying is intentional for strength.

GB/T 3531 15MnNiNbDR Mechanical Properties

GB/T 3531-2014 typical bands; verify GB/T 713.3 if that edition is contracted.

Delivery Condition, Heat Treatment and Tests

Normalized or normalized + tempered. UT commonly required on thicker plates.

Thickness and Size Coverage

Typical 6–60 mm (GB/T 713.3 allows from 6 mm; older tables sometimes from 10 mm).

Applications of GB/T 3531 15MnNiNbDR

Low-temperature pressure vessels needing higher yield than 16MnDR / 15MnNiDR with -50°C impact qualification.

Equivalent / Related Grades of GB/T 3531 15MnNiNbDR

Equivalents are engineering references only. Dual certification requires the stricter combined limits on the PO and MTC.

FAQ about GB/T 3531 15MnNiNbDR Steel Plate

What is GB/T 3531 15MnNiNbDR steel plate?

It is a Mn-Ni-Nb low-temperature pressure vessel steel under GB/T 3531 (Steel plates for low temperature pressure vessels). a Nb-microalloyed Mn-Ni low-temperature pressure vessel plate under GB/T 3531 / GB/T 713.3, with higher strength (yield about 370 MPa thin) and typical Charpy at -50°C. Gangsteel lists the official mill/certificate grade as 15MnNiNbDR. See the full GB/T 3531 15MnNiNbDR page for chemistry and mechanical tables.

What is the yield and tensile strength of 15MnNiNbDR?

Minimum yield is about 370 / 360 / 350 MPa across the 6–16 / >16–36 / >36–60 mm bands. Typical tensile bands are shown in the mechanical properties table on this page; confirm the contracted GB/T 3531 or GB/T 713.3/713.4 edition before design.

What impact test temperature applies to GB/T 3531 15MnNiNbDR?

Charpy KV2 is typically -50°C / ≥60 J. Always state the required Charpy temperature and energy on the purchase order.

What delivery condition / heat treatment does 15MnNiNbDR use?

Normalized or normalized + tempered. UT commonly required on thicker plates.

How does 15MnNiNbDR compare with other GB/T 3531 grades?

All sit in the GB/T 3531 low-temperature vessel family (commercial buyers still search GB3531). Sister grades: 16MnDR / 15MnNiDR / 09MnNiDR / 08Ni3DR / 06Ni9DR. Hub: GB/T 3531 Steel Plate. Ambient/elevated GB carbon/alloy grades are under GB/T 713 / GB/T 713.2.

Is 15MnNiNbDR equivalent to ASTM A203 nickel steel?

They are approximate engineering counterparts only for Ni-bearing low-temperature service. Compare with ASTM A203 (Grade D, Grade E, Grade F). Dual certification requires the stricter combined limits.

What mill certificate does Gangsteel supply for 15MnNiNbDR?

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 / cryogenic impact results.

What thickness can Gangsteel produce for 15MnNiNbDR?

Typical 6–60 mm (GB/T 713.3 allows from 6 mm; older tables sometimes from 10 mm). Browse the GB/T 3531 hub for the full grade list.

Related GB/T 3531 / Pressure Vessel Grades

GB/T 3531 Steel Plate | 16MnDR | 09MnNiDR | 06Ni9DR | GB/T 713 | ASTM A203 | ASTM A353 | ASTM A553 Type I | Pressure Vessel Steel Plate