15MnNiNbDR steel plate for low temperature service

1. Introduction of 15MnNiNbDR steel plate: 15MnNiNbDR is a kind of low temperature pressure vessel steel plate. 15MnNiNbDR steel is indicated by the average carbon content, alloy element letters and the Chinese pinyin of the low temperature pressure vessel "low" and "vessel".

2. 15MnNiNbDR steel plate implements the standard: GB3531.

3. 15MnNiNbDR shape, weight and tolerance
a. shape and allowable tolerances of the 15MnNiNbDR steel plate should meet the requirements of GB/T709.
b. The thickness tolerance of the 15MnNiNbDR steel plate should meet the B tolerance requirements of GB/T709.
c. According to the theoretical weight of the steel plate, the 15MnNiNbDR steel plate density for calculation is 7.85g/cm³.

4. 15MnNiNbDR steel plate delivery state: 15MnNiNbDR steel plate shall be normalized or normalized + tempered, and the impact temperature is -50 degrees.

5. Chemical composition of 15MnNiNbDR steel plate:
C: ≤0.18
Si: 0.15-0.5
Mn: 1.2-1.6
P: ≤0.02
S: ≤0.008
Ni: 0.3-0.7
Nb: 0.015-0.04

6. Application of 15MnNiNbDR steel plate: used in the manufacture of low-temperature containers such as ethylene spherical tanks.