GB3531 low temperature pressure vessel steel plate

GB3531 low temperature pressure vessel steel plate

GB3531 standard specifies the grade, shape, weight and allowable deviation, technical requirements, verification methods, inspection rules, packaging, marking and quality certificates of low temperature pressure vessel steel plates. GB3531 standard covers 16MnDR,15MnNiDR,09MnNiDR, etc. steel grades.

GB3531 low temperature pressure vessel steel plate chemical composition:

GB3531 C% SI% Mn% Ni% Mo% V% Nb% Alt% P%, max S%, max
16MnDR ≤0.20 0.15-0.50 1.2-1.6 ≤0.40 - -   ≥0.020 0.02 0.001
15MnNiDR ≤0.18 0.15-0.50 1.2-1.6 0.20-0.60 - ≤0.050   ≥0.020 0.02 0.008
09MnNiDR ≤0.12 0.15-0.50 1.2-1.6 ≤0.40 - - ≤0.040 ≥0.020 0.02 0.008

GB3531 low temperature pressure vessel steel plate mechanical property:

Thickness Tensile Strength Yield Strength, min Elongation, %, min
mm 16MnDR 15MnNiDR 09MnNiDR 16MnDR 15MnNiDR 09MnNiDR 16MnDR 15MnNiDR 09MnNiDR
6<T≤16 490-620 490-620 440-570 315 325 300 21 20 23
16<T≤36 470-600 480-610 430-560 295 315 280
36<T≤60 460-590 470-600 430-560 285 305 270
60<T≤100 450-580   420-550 275   260  
100<T≤120 440-570   420-550 265   260  

GB3531 low temperature pressure vessel steel plates are mainly used for building boilers and pressure vessels in petroleum, chemical industry, power plant and so on industries. GB3531 low temperature pressure vessel steel plates are used in manufacturing the reactor, the heat interchanger, the separator, the spherical tank, the oil gas storage holder, etc.