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Description: The GB3531 standard specifies the order content, grade representation method, size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of steel plates for low-temperatu ...
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The GB3531 standard specifies the order content, grade representation method, size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of steel plates for low-temperature pressure vessels.
The main grades of GB3531 steel plate for low temperature pressure vessels are:16MnDR, 15MnNiDR, 15MnNiNbDR, 09MnNiDR, 08Ni3DR, 06Ni9DR.
GB3531 steel plate is mainly used in the manufacture of low-temperature pressure vessels in petroleum, chemical industry, power plant and other industries, and the applicable temperature range is -196℃~-20℃.
GB3531 steel chemical components:
| GB3531 | C | Si | Mn | Ni | Mo | V | Nb | Alt | P | S |
|---|---|---|---|---|---|---|---|---|---|---|
| 16MnDR | 0.20 | 0.15-0.50 | 1.20-1.60 | 0.40 | ≥0.020 | 0.02 | 0.01 | |||
| 15MnNiDR | 0.18 | 0.15-0.50 | 1.20-1.60 | 0.20-0.60 | 0.05 | ≥0.020 | 0.02 | 0.008 | ||
| 15MnNiNbDR | 0.18 | 0.15-0.50 | 1.20-1.60 | 0.30-0.70 | 0.015-0.040 | 0.02 | 0.008 | |||
| 09MnNiDR | 0.12 | 0.15-0.50 | 1.20-1.60 | 0.30-0.80 | 0.040 | ≥0.020 | 0.02 | 0.008 | ||
| 08Ni3DR | 0.10 | 0.15-0.35 | 0.30-0.80 | 3.25-3.70 | 0.12 | 0.05 | 0.015 | 0.005 | ||
| 06Ni9DR | 0.08 | 0.15-0.35 | 0.30-0.80 | 8.50-10.00 | 0.10 | 0.01 | 0.008 | 0.004 |
GB3513 steel mechanical property:
| GB3531 | thickness(mm) | Tensile strength | Yield strength | Elongation % | Impact temperature | Impact energy (J) |
|---|---|---|---|---|---|---|
| 16MnDR | 6＜T≤16 | 490-620 | 315 | 21 | -40 | 47 |
| 16＜T≤36 | 470-600 | 295 | ||||
| 36＜T≤60 | 460-590 | 285 | ||||
| 60＜T≤100 | 450-580 | 275 | -30 | 47 | ||
| 100＜T≤120 | 440-570 | 265 | ||||
| 15MnNiDR | 6＜T≤16 | 490-620 | 325 | 20 | -45 | 60 |
| 16＜T≤36 | 480-610 | 315 | ||||
| 36＜T≤60 | 470-600 | 305 | ||||
| 15MnNiNbDR | 6＜T≤16 | 530-630 | 370 | 20 | -50 | 60 |
| 16＜T≤36 | 530-630 | 360 | ||||
| 36＜T≤60 | 530-620 | 350 | ||||
| 09MnNiDR | 6＜T≤16 | 440-570 | 300 | 23 | -70 | 60 |
| 16＜T≤36 | 430-560 | 280 | ||||
| 36＜T≤60 | 430-560 | 270 | ||||
| 60＜T≤120 | 420-550 | 260 | ||||
| 08Ni3DR | 6＜T≤60 | 490-620 | 320 | 21 | -100 | 60 |
| 60＜T≤100 | 480-610 | 300 | ||||
| 06Ni9DR | 5＜T≤30 | 680-820 | 560 | 18 | -196 | 100 |
| 30＜T≤50 | 560 |
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