GB/T 713.5 Q400GMDR Steel Plate | Q400GMDR High-Mn -196°C Vessel Plate

Q400GMDR is the naming example in GB/T 713.5-2023. The standard writes it out: Q = yield, 400 = minimum Rp0.2 in MPa, GM = high manganese, DR = low-temperature vessel. Buyers search GB/T 713.5 Q400GMDR, Q400GMDR High-Mn -196°C vessel plate and high manganese LNG plate.

GB/T 713.5 is a new 2023 part. It does not replace GB/T 3531 or GB/T 24510. Table 1 and Table 2 in the published book list Q400GMDR as the grade. Do not look for this name in GB/T 713.3 or GB/T 713.4.

Yield (Rp0.2) is 400 MPa min. Tensile is 800–950 MPa. Delivery is thermomechanical rolling (TMCP), not normalize and not 9Ni quench-and-temper. Service temperature is not lower than −196 °C. Thickness in the standard is 5–60 mm. SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) for this grade.

Do not ship 06Ni9DR steel plate against Q400GMDR. 06Ni9DR is 9Ni QT plate under GB/T 713.4. Do not ship 08Ni3DR steel plate or 07Ni5DR steel plate. Those are nickel grades. Do not ship GB/T 713.3 16MnDR steel plate, 09MnNiDR steel plate, 13MnNiDR steel plate, 15MnNiNbDR steel plate, 11MnNiMoDR steel plate, Q420DR steel plate or Q460DR steel plate. Those are low-alloy low-temperature plates, not high-manganese plate.

Do not ship GB/T 713.2 Q345R steel plate, Q245R steel plate, Q370R steel plate, Q420R steel plate or Q460R steel plate against a −196 °C high-Mn file.

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

This plate sits in pressure vessel steel plates. Nickel cryogenic comparisons belong on 06Ni9DR steel plate. Carbon vessel comparisons belong on Q345R steel plate.

Heat analysis follows GB/T 713.5 Table 1. Product analysis follows GB/T 713.1. The published Table 1 lists Q400GMDR only. Phosphorus and sulfur are held very tight. Other alloy additions outside Table 1 are allowed only inside the 7.1.2 limits, and they must be reported on the certificate.

Heat Analysis Notes — GB/T 713.5 Q400GMDR

This is not a 1.2–1.6% Mn plate like 16MnDR steel plate. It is not a 8.5–10% Ni plate like 06Ni9DR steel plate. Ask SHH STEEL for the mill heat analysis against Table 1 before you lock a dual-name file. Density of high-manganese plate is higher than 7.85 g/cm³ carbon plate; use the mill certificate weight for tank calculation.

Tensile in GB/T 713.5 Table 2 is a transverse room-temperature test. Yield is reported as Rp0.2, not ReL.

Tensile — GB/T 713.5 Q400GMDR

For thickness greater than 36 mm, a second Charpy set at mid-thickness may be added by agreement. Do not treat 800–950 MPa tensile as permission to stamp 06Ni9DR steel plate or Q460DR steel plate. Those books have different chemistry, delivery and impact rules.

Q400GMDR is discussed in the market as a high-manganese option for −196 °C work. That is a commercial comparison, not a Code substitution for 9Ni.

Buyers pick Q400GMDR when the Chinese file wants a high-manganese plate for cryogenic vessels down to −196 °C and does not want to name 06Ni9DR steel plate. TMCP is the delivery. Welding, forming and repair rules are not a copy-paste of 9Ni QT practice.

It is not an ASME Section VIII plate by default. An ASME 9Ni file should still name SA353 or SA553. Dual marking is possible only when both books are fully met.

If the inquiry is Japanese vessel plate, look at SPV315 steel plate, SPV355 steel plate, SPV410 steel plate or SPV450 steel plate. If the inquiry is German fine-grain plate, look at StE355 steel plate, WStE355 steel plate, TStE355 steel plate or EStE355 steel plate.

SHH STEEL supplies this plate to fabricators in the United States, Mexico, South America, Europe, the Middle East, Africa and Asia.

Q400GMDR is high-manganese TMCP cryogenic plate. Treat welding as production welding, and as Code welding when the equipment is a vessel.

Qualify to the applicable code. A 9Ni procedure written for 06Ni9DR steel plate is not automatically valid. A 16MnDR steel plate normalize procedure is the wrong family. Consumables, heat input and interpass must match high-Mn practice. The fabricator owns the WPS. SHH STEEL can share mill heat data for that review.

Usual delivery from SHH STEEL is TMCP GB/T 713.5 Q400GMDR. GB/T 713.5 says the plate shall be delivered in the thermomechanical processed state. Do not order normalize-only or 9Ni QT and expect the same certificate.

If the vessel will see PWHT, say so. High-Mn cryogenic plate is not a default PWHT grade. 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 713.5 Q400GMDR; heat number; heat analysis against Table 1; product analysis when ordered; extra Ni, Mo, Nb, V, Ti or Al when added; tensile as Rp0.2 and Rm; TMCP; impact as ordered. Certificates may be EN 10204 3.1 or EN 10204 3.2.

Usual supply range from SHH STEEL for Q400GMDR High-Mn -196°C vessel plate:

• Thickness: 5 mm – 60 mm per GB/T 713.5
• Width: 1500 mm – 3500 mm
• Length: 3000 mm – 12000 mm

Cr-Mo vessel plate belongs on 15CrMoR steel plate, 14Cr1MoR steel plate, 12Cr2Mo1R steel plate, 12Cr1MoVR steel plate or 12Cr2Mo1VR steel plate. Mn-Mo-Ni elevated-temp plate belongs on 13MnNiMoR steel plate or 18MnMoNbR steel plate.

Dimensional limits follow GB/T 713.1. UT is added when the order names NB/T 47013.3, EN 10160 or ASTM A435 / A578.

Charpy details. Temperature, energy, location and orientation. Mid-thickness impact for plates thicker than 36 mm is by agreement.

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

Reported extras. Ni, Mo, Nb, V, Ti, Al when added.

Simulated PWHT. Only when written.

NDE. UT Class as named.

Third-party. EN 10204 3.2 when written.

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 the USA, Mexico, Argentina, Peru, El Salvador, Spain, Netherlands, Germany, UAE, Saudi Arabia, South Africa, India, Thailand, Singapore, Vietnam, the Philippines, Japan and Korea.

Typical trade terms on this grade: FOB Shanghai, CIF Fujairah, CIF Le Havre, CIF Kawasaki, plus Houston, Rotterdam, Jebel Ali, Singapore, Busan, Antwerp and Barcelona.

Typical lead time:

• Ex-stock: about 5–7 days when high-Mn plate is in yard
• Mill rolling, standard TMCP: about 45 days
• 3.2 or extra NDE: about 2 months

SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin). On GB/T 713.5 Q400GMDR that means mill pricing, Q400GMDR chemistry reported against Table 1, recorded TMCP, Rp0.2 and 800–950 MPa tensile, 3.1 as standard and 3.2 when specified.

We keep the grade on the order. Q400GMDR is not 06Ni9DR steel plate. Q400GMDR is not 16MnDR steel plate. Q400GMDR is not Q345R steel plate. If the drawing says 9Ni, we will not ship high-Mn and call the names close.

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

GB/T 713.5 Q400GMDR Steel Plate is Chinese high-manganese cryogenic pressure-vessel plate at the 400 MPa Rp0.2 step, 800–950 MPa tensile, TMCP delivery, for service down to −196 °C. Whether the inquiry says GB/T 713.5 Q400GMDR or Q400GMDR High-Mn -196°C Vessel Plate, SHH STEEL as a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) supplies plate with Q400GMDR chemistry against Table 1, recorded TMCP, and EN 10204 3.1 or 3.2 certification.

SHH STEEL supplies GB/T 713.5 Q400GMDR High-Mn -196°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 Fujairah / Le Havre / Kawasaki.

Contact SHH STEEL for mill rolling, stock inquiry, TMCP, 3.2 inspection or a quotation.

GB/T 713.5 Q400GMDR Steel Plate, Q400GMDR High-Mn -196°C vessel plate, high manganese LNG plate, Q400GMDR supplier, global steel mill sourcing partner SHH STEEL