GB/T 713.3 15MnNiNbDR Steel Plate | 15MnNiNbDR -50°C Vessel Plate

If a drawing says 15MnNiNbDR, it is asking for a Chinese Ni-Nb low-temperature vessel plate, not a generic “low-temp plate” and not 16MnDR. The current book is GB/T 713.3-2023. That part replaces GB/T 3531-2014. Buyers still type GB/T 3531 15MnNiNbDR into Google. Both names belong on the page.

The grade name is readable: about 0.15% C, Mn, Ni, Nb, DR for low-temperature vessel. Yield is 370 MPa at 6–16 mm. Tensile is 530–630 MPa. Delivery is normalized or normalized and tempered. Impact is −50 °C, 60 J. Minimum thickness in the 2023 book is 6 mm, down from 10 mm in the old 3531 table. SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) for this grade.

Do not ship 16MnDR against 15MnNiNbDR. 16MnDR is −40 °C and has no required nickel or niobium. Do not ship 09MnNiDR against 15MnNiNbDR. 09MnNiDR is −70 °C with lower carbon and lower strength. Do not ship Q345R. Q345R lives in GB/T 713.2 and has no −50 °C guarantee.

This page is not 08Ni3DR or 06Ni9DR. Those nickel cryogenic grades moved to GB/T 713.4-2023.

Company scope: global steel mill sourcing partner – SHH STEEL.

This plate sits in pressure vessel steel plates. ASME comparisons belong on ASME SA516, ASME SA662 and ASME SA203, not as automatic substitutes.

Heat analysis follows GB/T 713.3 Table 1. Product analysis follows GB/T 713.1. If the destination file wants both, write “heat + product analysis” on the PO.

Heat Analysis and Product Analysis — GB/T 713.3 15MnNiNbDR

Nickel and niobium are both required. That is the whole point of the grade name. A heat that meets 16MnDR chemistry but misses Ni or Nb is not 15MnNiNbDR. SHH STEEL reports heat analysis on every certificate and product analysis when the order names it.

Strength sits above 16MnDR and above 09MnNiDR. That is why some files pick this grade when they need −50 °C and a higher yield.

Tensile and Yield — GB/T 713.3 15MnNiNbDR

Elongation is commonly 20% min. Impact is −50 °C, 60 J. Do not quote −70 °C as the GB default. That temperature belongs on 09MnNiDR. Do not quote 370 MPa yield on a 50 mm plate. The 36–60 mm column drops to 340 MPa.

Do not treat 530–630 MPa tensile as a free pass to stamp SA516 Gr.70 or SA203 Gr.A. Nickel content and impact temperature still have to match the named book.

Comparison names help a buyer search. They do not authorize substitution.

15MnNiDR is not on this list. GB/T 713.3 deleted that old 3531 grade. If a 2014 drawing still says 15MnNiDR, confirm whether the buyer accepts 15MnNiNbDR or needs a concession.

Buyers pick 15MnNiNbDR when the vessel needs more strength than 16MnDR and a lower impact temperature, but does not need the −70 °C nickel package of 09MnNiDR. Typical work is cold-region tanks, separators, LPG-related shells and other GB low-temperature vessels.

It is not an ASME Section VIII plate by default. An ASME file should name SA516 Gr.70, SA662 Gr.C or SA203 Gr.A and then write the extras. Dual marking is possible only when chemistry, tensile, impact and PWHT fit both books.

SHH STEEL supplies this plate to fabricators in the United States, Mexico, South America, Europe, the Middle East, Africa and Asia. It is not 3.5Ni plate. It is not QT Ni-Cr-Mo like SA543 Type B Cl.1. Stainless inquiries belong on ASME SA240 or ASTM A240.

15MnNiNbDR is killed Mn-Ni-Nb vessel plate. Treat welding as production welding, and as Code welding when the equipment is a vessel.

Qualify to the applicable code. ASME dual-name work uses ASME Section IX. Match consumables to the 530–630 MPa tensile band and the −50 °C toughness target. A 16MnDR procedure is not automatically valid. A 09MnNiDR procedure is not automatically valid. Preheat follows thickness and hydrogen control. The fabricator owns the WPS. SHH STEEL can share mill heat data for that review.

Usual delivery from SHH STEEL is normalized or normalized-and-tempered GB/T 713.3 15MnNiNbDR. As-rolled is not the default.

If the vessel will see PWHT, say so. Test coupons then follow a simulated cycle. This is not the Cr-Mo temper route used on 15CrMoR or 12Cr2Mo1R. Extra simulation, 3.2 hold points or special NDE add time. Plan about two months when those extras are on the order.

The certificate lists GB/T 713.3 15MnNiNbDR; heat number; heat analysis; product analysis when ordered; tensile to the correct thickness column; N or N+T; impact at −50 °C. Certificates may be EN 10204 3.1 or EN 10204 3.2.

Usual supply range from SHH STEEL for 15MnNiNbDR -50°C vessel plate:

• Thickness: commonly 6 mm – 60 mm. Confirm any request above 60 mm against mill capability
• Width: 1500 mm – 4000 mm
• Length: 3000 mm – 12000 mm
• Cut-to-length plates and nest sizes inside those limits

Ship plate inquiries belong on shipbuilding steel plates or BV Rules. Weathering plate belongs on EN 10025-5 or Corten A/B. TMCP fine-grain structural belongs on EN 10025-4. QT structural belongs on EN 10025-6. Ordinary structural belongs on EN 10025-2 or JIS G3106.

Dimensional limits follow GB/T 713.1 and the mill rolling standard named on the order. Do not apply ASTM A36/A36M structural tolerances to a Chinese vessel plate without writing them. UT to GB/T 2970, JB/T 4730 / NB/T 47013.3, EN 10160 or ASTM A435 / A577 / A578 is added when the order names it.

Most export 15MnNiNbDR orders add extras. SHH STEEL does not assume them.

Charpy details. Temperature, energy, location and orientation. GB default is −50 °C / 60 J.

Product analysis. Add this when the destination file wants finished-plate chemistry.

Simulated PWHT. When the equipment will be stress-relieved.

NDE. UT per the named method.

Z-direction. Z15 / Z25 / Z35 when the drawing names it.

HIC / NACE / SSC. Only when written.

Third-party. EN 10204 3.2, with inspectors arranged for US, Mexican, European, Middle East, Japanese or Korean documentation packages.

Stainless inquiries belong on stainless steel products, JIS G4305 or AISI stainless. Other vessel comparisons: SA203 Gr.B, SA302 Gr.B, A516 Grade 70, SA533 Type C Cl.1, SA517 Gr.P, SA738 Gr.C.

SHH STEEL is a global steel mill sourcing partner with mill partnerships in China. We supply ASTM, ASME, EN, DIN, JIS and GB steel to buyers outside a single region. Origin is mill-direct, China origin.

SHH STEEL has supplied steel plates to:

• North America: USA, Mexico
• South America: Argentina, Peru and other South American ports
• Central America: El Salvador
• Europe: Spain, Netherlands, Germany and surrounding ports
• Middle East: UAE, Saudi Arabia and nearby Gulf ports
• Africa: South Africa
• South / Southeast Asia: India, Thailand, Singapore, Vietnam, Philippines
• East Asia: Japan, Korea

Typical trade terms on this grade: FOB Shanghai, CIF Busan, CIF Hamburg, CIF Durban, plus Houston, Rotterdam, Jebel Ali, Singapore, Antwerp, Manzanillo, Callao, Buenos Aires, Barcelona, Laem Chabang, Ho Chi Minh, Manila, Mumbai and Yokohama.

Typical lead time for GB/T 713.3 15MnNiNbDR:

• Ex-stock: about 5–7 days
• Mill rolling, standard N or N+T: about 45 days
• Simulated PWHT, 3.2 or extra NDE: about 2 months

Documents travel with the cargo: mill certificate, packing list, commercial invoice, bill of lading, and EN 10204 3.1 or 3.2 as ordered. Third-party inspection can be arranged before loading. Packing is seaworthy, with edge protection and marking in English as specified on the order.

SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin). We supply ASTM / ASME / EN / DIN / JIS / GB steel to the USA, Mexico, South America, Europe, the Middle East, Africa and Asia. On GB/T 713.3 15MnNiNbDR that means mill pricing, 15MnNiNbDR chemistry reported as heat analysis and as product analysis when ordered, recorded N or N+T, tensile results to the correct thickness column, −50 °C impact, 3.1 as standard and 3.2 when specified.

We keep the grade on the order. 15MnNiNbDR is not 16MnDR. 15MnNiNbDR is not 09MnNiDR. 15MnNiNbDR is not 15MnNiDR. 15MnNiNbDR is not Q345R. 15MnNiNbDR is not SA516 Gr.70 unless both books are met. If a 2014 drawing still says 15MnNiDR, we will ask before rolling.

Company scope: global steel mill sourcing partner – SHH STEEL.

GB/T 713.3 15MnNiNbDR Steel Plate is Chinese −50 °C Mn-Ni-Nb pressure-vessel plate at the 370 MPa yield step, 530–630 MPa tensile at 6–16 mm, N or N+T delivery. Whether the inquiry says GB/T 713.3 15MnNiNbDR, GB/T 3531 15MnNiNbDR or 15MnNiNbDR -50°C Vessel Plate, SHH STEEL as a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) supplies plate with 15MnNiNbDR chemistry, heat and product analysis when ordered, recorded N or N+T, −50 °C impact, and EN 10204 3.1 or 3.2 certification.

SHH STEEL supplies GB/T 713.3 15MnNiNbDR -50°C Vessel Plate to the USA, Mexico, South America, Europe, the Middle East, Africa and Asia for work that actually names this grade. FOB Shanghai / CIF Busan / Hamburg / Durban.

Contact SHH STEEL for mill rolling, stock inquiry, N or N+T, 3.2 inspection or a quotation.

GB/T 713.3 15MnNiNbDR Steel Plate, GB/T 3531 15MnNiNbDR, 15MnNiNbDR -50°C vessel plate, 15MnNiNbDR supplier, global steel mill sourcing partner SHH STEEL