What is composition of low temperature pressure vessel plate 15MnNiNbDR

The impact temperature of low temperature pressure vessel plate 15MnNiNbDR is - 45℃. It has the characteristics of high strength and high toughness. Executive standard of 15MnNiNbDR steel plate: GB / T 3531. Delivery status of 15MnNiNbDR plate: normalizing + tempering.

Chemical composition of pressure vessel plate 15MnNiNbDR (heating analysis %):
C: Less than or equal to 0.18
Si: 15-0.50
Mn: 1.20-1.60
P: Less than or equal to 0.020
S: Less than or equal to 0.010
Ni: 0.30-0.70
Nb: 0.01-0.04
Al：0.015
Cr: less than or equal to 0.45
Note: in order to improve the properties of 15MnNiNbDR steel, other trace elements can be added.

The appearance of low temperature pressure vessel plate 15MnNiNbDR fills the gap in low-alloy steel plates for low-temperature vessels in the industry between minus 40 degrees and minus 70 degrees. 15MnNiNbDR steel plate is commonly used to manufacture low-temperature pressure vessels, low-temperature spherical tanks, high parameter low-temperature cylindrical vessels, low-temperature ethylene spherical tanks and other equipment.