Chemical composition of 13MnNiMoR, mechanical properties of 13MnNiMoR

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13MnNiMoR is a steel plate used for medium and low-temperature pressure vessels. According to the new pressure vessel regulations, the tempering temperature for 13MnNiMoR should be no less than 650 degrees. The established grades 13MnNiCrNbg and 13MnNiMoNbR are no longer in use. Wugang has leading production technology. Wugang products are in limited stock and require custom ordering; available in thicknesses from 8 to 120 mm, with a maximum width of 4000 mm. (Can be bundled)
I. Chemical composition of 13MnNiMoR
Chemical elements (mass fraction)/%
Grade: CSiMnCrNiMoNbP
13MnNiMoR: ≤0.15, 0.15–0.50, 1.20–1.60, 0.20–0.40, 0.60–1.00, 0.20–0.40, 0.005–0.020; ≤0.020, ≤0.010

II. Mechanical properties of 13MnNiMoR
Grade | Mechanical properties
13MnNiMoR steel plate | Nominal thickness/mm | Tensile test | Impact test | 180° bending test | Bending diameter (b≥35mm) | Tensile strength R/(N/㎡) | Yield strength R/(N/㎡) | Elongation A/% | Temperature/℃ | Impact energy KV2/J
Minimum value | Minimum value | 30–100 | 570–720 | 390 | 180 | 41 | d=3a

III. High-temperature mechanical properties of 13MnNiMoR
Grade | Thickness/mm | Test temperature
200 | 250 | 300 | 350 | 400
Yield strength R/(N/㎡) | Minimum value
13MnNiMoR | 30–100 | 355 | 350 | 345 | 335 | 305
100–150 | 345 | 340 | 335 | 325 | 300

IV. Delivery condition of 13MnNiMoR: Normalizing + tempering + flaw detection

V. Standard applied: GB6654-1996 / WYJ

VI. Production process of 13MnNiMoR: Electric furnace smelting → LF/VD furnace refining → Ingot casting → Ingot cleaning → Ingot heating → Plate rolling → Flaw detection → Normalizing → Tempering → Plate grinding → Flaw detection → Cutting and sampling → Performance testing → Storage

VII. Applications of 13MnNiMoR: 13MnNiMoR is used in the manufacture of gasification equipment and methanol synthesis towers, replacing imported products. It has passed the evaluation organized by the Ministry of Metallurgy and the Ministry of Labor, and its actual performance meets international advanced standards. It is widely used in industries such as petroleum, chemicals, power plants, and boilers, for manufacturing equipment and components including reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, liquefied gas tanks, pressure vessels for nuclear reactors, boiler drum, liquefied petroleum gas cylinders, high-pressure water pipes in hydroelectric stations, and turbine casings