Chemical composition of 15MnNiDR: steel plate for low-temperature pressure vessels

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15MnNiDR is a steel plate for low-temperature pressure vessels. ““D” is the first letter of the Pinyin spelling; “R” is the first letter of the Rongpin spelling. I. Chemical composition of 15MnNiDR/15MnNiDR (can be rolled into strips; available in cut form): CSiMnNiVNbAltPS – not more than ≤0.18, 0.15–0.50, 1.20–1.60, 0.20–0.60, ≤0.06, ≥0.02, 0.025, 0.012. II. Standards applicable to 15MnNiDR. Delivery condition for 15MnNiDR: normalized or normalized + tempered; low-temperature impact test at –45 degrees Celsius. Origin of 15MnNiDR: Wugang, Wuhan Iron and Steel. 15MnNiDR, 09MnNiDR, 16MnDR. III. Mechanical properties of 15MnNiDR: Nominal thickness of the steel plate in 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. Values required: Not less than… Not less than… For 15MnNiDR: 6–16: 490–620, 32520–4534; d=3a; >16–36: 480–610, 315; >36–60: 470–600, 305. IV. Application prospects of 15MnNiDR: It is used in petroleum and chemical industry equipment such as deethanization towers, CO2 absorption towers, medium-pressure flash towers, coolers, reabsorption towers, compressor casings, and propane cryogenic storage tanks.