16MnDR 09MnNiDR 06Ni9DR 9%Ni Low Temperature Pressure Vessel Steel Plate for LNG Storage Tanks

Excellent low-temperature impact toughness down to -40°C / -70°C / -196°C
Strictly controlled P and S for superior crack resistance under cryogenic service
Normalized & tempered condition ensures stable through-thickness mechanical property
Good weldability for LNG tank and cryogenic equipment fabrication
Full MTC 3.1/3.2 traceability with Charpy impact test certificate per batch

Product Overview

Our 16MnDR, 09MnNiDR and 06Ni9DR (9%Ni) low temperature pressure vessel steel plates are specialized cryogenic steel grades manufactured under GB/T 3531 standard, with 9%Ni grade also equivalent to ASTM A553 Type 1 / A353. This series is designed for pressure equipment operating under sub-zero temperatures, especially for LNG storage and transportation industries.

16MnDR is the most widely used low-temperature carbon-manganese steel grade for service down to -40°C, suitable for moderate cryogenic pressure vessels and industrial refrigeration equipment. 09MnNiDR is nickel-alloyed low-temperature steel with improved toughness for -70°C service, commonly applied in petrochemical cryogenic storage tanks. 06Ni9DR (9%Ni) is the highest-grade cryogenic steel in this series, delivering excellent toughness down to -196°C, making it the preferred material for LNG storage tanks, LNG carriers and cryogenic gas processing equipment.

All plates are supplied in normalized and tempered condition, with guaranteed Charpy V-notch impact values at the specified test temperature. We supply full size range from 6mm to 100mm thickness, width 1500mm to 4000mm, length 3000mm to 12000mm. Custom cutting, beveling and ultrasonic testing services are available according to fabrication drawings. Every batch comes with EN 10204 3.1 or 3.2 Mill Test Certificate, including chemical composition, mechanical properties and low-temperature impact test results.

Boiler & Pressure Vessel Steel Plate

Chemical & Mechanical Property Snapshot

Grade	Standard	C Max(%)	Mn(%)	Si Max(%)	S Max(%)	P Max(%)	Yield Strength Min (MPa)	Tensile Strength (MPa)	Elongation Min (%)	Impact Test Temp
16MnDR	GB/T3531	0.20	1.20–1.60	0.55	0.012	0.025	315	490–620	21	-40°C
09MnNiDR	GB/T3531	0.12	1.20–1.60	0.50	0.010	0.020	325	440–590	22	-70°C
06Ni9DR (9%Ni)	GB/T3531 / ASTM A553	0.08	0.90	0.35	0.005	0.010	585	680–820	20	-196°C

Detailed Technical Specifications

Category	Item
Product Name	16MnDR / 09MnNiDR / 06Ni9DR (9%Ni) Low Temperature Pressure Vessel Steel Plate
Product Type	Cryogenic Low-Temperature Pressure Vessel Carbon & Alloy Steel Plate
Product Classification	Low Temperature Steel Plate for LNG Storage Tanks, Cryogenic Equipment & Refrigeration Vessels
Standards	GB/T 3531, ASTM A553 / A353, EN 10028-4
Grades	16MnDR, 09MnNiDR, 06Ni9DR (9%Ni)
Size Range	Thickness: 6–100mm; Width: 1500–4000mm; Length: 3000–12000mm
Heat Treatment	Normalized & Tempered (N+T)
Main Performance	Excellent low-temperature impact toughness down to -196°C, low P/S for crack resistance, good weldability
Processing Capability	Custom cutting, beveling, edge preparation, ultrasonic testing per fabrication drawings
Main Applications	LNG storage tanks, LNG carriers, cryogenic pressure vessels, petrochemical refrigeration equipment, industrial gas storage tanks
MOQ	5 Ton
Trade Terms	FOB, CFR, CIF, DDP, EXW
Payment Terms	T/T, L/C at Sight, Western Union, Trade Assurance
Delivery Time	5–10 days for in-stock goods; 15–30 days for customized production
Packaging Standard	Standard seaworthy export packing, wooden pallets / steel bundles, waterproof and rust-proof film, fixed with steel strips
Certificate	MTC 3.1 / 3.2, Charpy impact test report, ISO, SGS, BV

Product Comparison Table

Product Category	Typical Grades	Applicable Standards	Low Temp Impact	Main Applications
Moderate Low-Temp Vessel Steel	16MnDR	GB/T3531	-40°C	Refrigeration pressure vessels, moderate cryogenic storage tanks
Medium Low-Temp Nickel Steel	09MnNiDR	GB/T3531	-70°C	Petrochemical cryogenic tanks, low-temperature pressure equipment
Cryogenic 9%Ni Steel	06Ni9DR (9%Ni)	GB/T3531 / ASTM A553	-196°C	LNG storage tanks, LNG carriers, cryogenic gas processing equipment

App Market

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Product Packaging

Secure Export Packaging For Safe Handling And Delivery

FAQs

What is the difference between 16MnDR, 09MnNiDR and 06Ni9DR?

They are graded by their minimum service temperature. 16MnDR works down to -40°C, 09MnNiDR down to -70°C, and 06Ni9DR (9%Ni) down to -196°C. Higher grades contain nickel alloy for superior cryogenic toughness.

What temperature is 9%Ni steel suitable for?

06Ni9DR (9%Ni) steel is designed for -196°C service, making it ideal for LNG storage tanks, LNG carriers and cryogenic gas processing equipment.

What heat treatment do you supply for low temperature plates?

All plates are supplied in normalized and tempered (N+T) condition, which is required by GB/T3531 standard for guaranteed low-temperature impact toughness.

Can you provide Charpy impact test certificate for each batch?

Yes. Every batch comes with Charpy V-notch impact test certificate at the specified test temperature, included in the MTC EN 10204 3.1 / 3.2.

What is the maximum thickness available for 9%Ni steel?

We supply 06Ni9DR (9%Ni) plates up to 100mm thickness. Through-thickness ultrasonic testing is available on request.

16MnDR 09MnNiDR 06Ni9DR 9%Ni Low Temperature Pressure Vessel Steel Plate for LNG Storage Tanks