GB3531 15MnNiDR Boiler Plate
15MnNiDR is a high-quality alloy steel plate specifically designed for manufacturing cryogenic pressure vessels, featuring excellent low-temperature toughness, weldability, corrosion resistance, and hydrogen-induced cracking resistance.
Execution Standards & Delivery Condition
Standard: Originally complied with GB/T 3531-201412
Delivery Condition: Normalized (N) or normalized + tempered (NT)
15MnNiDR vessel plate chemical composition
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Ni(％) |
|---|---|---|---|---|---|
| Max 0.18 | 0.15-0.50 | 1.20-1.60 | 0.03 | 0.025 | 0.20-0.60 |
15MnNiDR boiler plate mechanical property
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 524 (≥) | 387 (≥) | 44 | 43 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 434 |
Performance Characteristics of 15MnNiDR
- 15MnNiDR Low-Temperature Toughness:
The 15MnNiDR steel plate maintains excellent impact toughness at extremely low temperatures (e.g., -40°C to -50°C), achieved through precise alloy element ratios and appropriate heat treatment processes.
- 15MnNiDR Balance Between Strength and Toughness:
This steel plate not only exhibits high yield strength and tensile strength but also good elongation, achieving a well-balanced combination of strength and toughness.
- 15MnNiDR Weldability:
The 15MnNiDR steel plate has excellent weldability and can be joined using various welding methods, such as manual arc welding, submerged arc welding, and gas shielded welding. The welded joints demonstrate superior performance with aesthetically pleasing bead formation.
- 15MnNiDR Workability:
The steel plate exhibits good workability, allowing for operations such as cutting, bending, and stamping to meet the requirements of different shapes and sizes.
15MnNiDR Boiler and Pressure veseel steel plate Products Details
Processing Methods of 15MnNiDR Steel Plate
15MnNiDR steel plate can be processed using the following methods:
Pressure Processing:
Includes cold working (e.g., cold rolling, bending) and hot working (e.g., hot rolling, forging).
Cold processing is suitable for thinner sheets, while hot processing is used for thicker sections.
Cutting Methods:
Flame cutting, plasma cutting, and laser cutting are commonly employed for precise shaping and sizing12.
Welding:
Supports arc welding, submerged arc welding, and gas shielded welding due to its excellent weldability12.
Machining:
Drilling, milling, and surface treatments (e.g., spraying, galvanizing) can be performed to enhance structural integrity and corrosion resistance
15MnNiDR thick plate can meet Z requirements: Z15, Z25, Z35.
Application Fields of 15MnNiDR Steel Plate
Application Fields of 15MnNiDR Steel Plate
With its exceptional low-temperature performance, 15MnNiDR is widely used in cryogenic storage tanks for ethylene plants, liquefied petroleum gas spherical tanks, and low-temperature heat exchangers. In large-scale coal chemical projects, it is employed for storing synthetic gas separation equipment at -60°C. In natural gas liquefaction plants, it serves as the core material for cryogenic pressure vessels, ensuring the safe operation of auxiliary cryogenic equipment in -162°C LNG storage systems. Additionally, it can be found in low-temperature sterilization equipment used in pharmaceuticals and food freezing industries.
The 15MnNiDR steel plate is extensively applied in the following fields:
Oil & Chemical Industry:
Used for manufacturing cryogenic storage tanks, pressure vessels, heat exchangers, and towers.
Natural Gas Industry:
Ideal for LNG storage and transportation due to its superior low-temperature and weldability properties.
Power Plant & Boiler Industry:
Suitable for components and equipment operating in low-temperature environments, such as reactor pressure vessels in nuclear power plants.
Other Fields:
Also utilized in shipbuilding, refrigeration equipment, industrial machinery, and special architectural structures requiring cryogenic components.
15MnNiDR pressure vessel quality steel plate product image
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