Table 7.
Basic properties of the discussed materials used for bottoms and glands.
| Material | Density (kg/dm3) | Minimum Yield Strength (MPa) | Minimum Tensile Strength (MPa) | Maximum Carbon Content (%) | Description |
|---|---|---|---|---|---|
| S355/S355JR | 7.8 | 355 | 490 | 0.2 | low-carbon structural steel |
| S275JR | 7.9 | 275 | 410 | 0.21 | low-carbon structural steel |
| Al 7075-T6 | 2.8 | 430 * | 510 | – | Al-Zn alloy |
| IS 1030 GRADE 280-580 | 7.85 | 280 | 580 | 0.25 | non-alloy steel |
| BS970070M20 | 7.8 | 210 | 410 | 0.24 | low-carbon structural steel |
| POM | 1.41 | 67–69 | 67–85 | – | poly-oxymethylene |
| C45 | 7.8 | 305 | 580 | 0.42–0.5 | medium-carbon structural steel |
| 42CrMo4 | 7.8 | 750 * | 1000 | 0.38–0.45 | alloy steel |
| AISI304 | 7.9 | 210 | 520 | 0.08 | austenitic stainless steel |
| G25 | 7.2 | 165 | 250 | 3.2–3.5 | grey cast iron |
* For aluminium alloy and 42CrMo4 steel, instead of the yield strength Re, the conventional yield strength Rp0.2 is given.