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low alloy steel plate 16mndr for low temperature pressure vessels
1 main use
the 16mndr steel plate is pure and has good comprehensive mechanical properties, weldability and low temperature impact toughness. used in the manufacture of cryogenic pressure vessel storage tanks with a minimum operating temperature of -40 °c.
2 grades and standards
product grade: 16mndr
executive standard: gb3531-2008
3 technical conditions of supply
3.1 product specifications
10～80×1500～4000×l;
3.2 chemical composition
table 1 chemical composition, %
brand | c≤ | si | mn | p≤ | s≤ | alt≥ |
16mndr | 0.20 | 0.15～0.50 | 1.20～1.60 | 0.025 | 0.012 | 0.020 |
3.3 mechanical properties
table 2 mechanical properties
brand | 规格，mm | σb,mpa | σs,mpa | δ5,% | akv, j，横向 | 180°弯曲试验 弯心直径（b≥35mm） |
不小于 | ||||||
16mndr | 6～16 | 490～620 | 315 | 21 | 34(-40℃) | d=2a |
＞16～36 | 470～600 | 295 | d=3a | |||
＞36～60 | 460～590 | 285 | ||||
＞60～80 | 450～580 | 275 | 34(-30℃) | |||
3.4 delivery status: normalizing or normalizing tempering