07Cr2AlMoR steel plate is a special steel plate for medium and low temperature pressure vessels. It has high strength, high corrosion resistance and good toughness, and is widely used in petroleum, chemical industry, electric power and other fields.
I. Basic Information
Meaning of the Grade: In 07Cr2AlMoR, "07" indicates that the carbon content is ≤0.07%; "Cr2" means the chromium (Cr) content is 2.00~2.40%; "AlMoR" represents aluminum (Al), molybdenum (Mo), and "R" (a special identifier for vessels).
Thickness Range: 6~60mm. Delivery is based on theoretical weight, and the theoretical weight calculation adopts the average value of the maximum and minimum thicknesses.
II. Chemical Composition
| Element | Content Range |
|---|---|
| Carbon | ≤0.09% |
| Chromium | 2.00~2.40% |
| Molybdenum | 0.30~0.50% |
| Aluminum | 0.30~0.50% |
| Nickel | ≤0.30% |
| Silicon | 0.20~0.50% |
| Manganese | 0.40~0.90% |
| Sulfur | ≤0.010% |
| Phosphorus | ≤0.020% |
Performance Guarantee: The proportion of elements is strictly controlled to ensure high strength, corrosion resistance, and weldability.
III. Performance Characteristics
Mechanical Properties: Tensile strength ≥480MPa, yield strength ≥345MPa, elongation ≥21%, impact energy (-40℃) ≥34J.
Corrosion Resistance: Excellent resistance to high-temperature, high-pressure, and high-corrosion environments, suitable for petroleum, chemical industry, marine engineering, and other fields.
Low-Temperature Toughness: The operating temperature can reach -40℃ to -70℃ while maintaining good mechanical properties.
IV. Application Fields
Core Fields: Petrochemical industry (storage tanks, reactors), electric power (boiler drums), nuclear energy (reactor pressure vessels), marine engineering (ships, platforms).
Other Scenarios: High-pressure water pipes in hydropower stations, liquefied petroleum gas cylinders, nuclear reactor pressure vessels, etc.
V. Production Processes
Smelting and Refining: Smelted in an oxygen converter or electric furnace, and refined outside the furnace to ensure pure composition.
Heat Treatment: Normalizing + tempering process to eliminate internal stress and improve strength and toughness.
VI. Standards and Certifications
Executive Standards: GB/T 709-2006 (dimensions, shape, weight) and GB/T 713-2014 (special technical conditions).
Manufacturers: Wuyang Iron and Steel in China is a major producer, and its product quality complies with national standards.
Summary: With its comprehensive performance advantages, 07Cr2AlMoR steel plate has become a core material in the field of medium and low-temperature pressure vessels, suitable for manufacturing equipment under extreme working conditions.
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