Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Additional properties of the materials used for bottoms and glands.
| Material | Average Hardness | Impact Energy (J) | Elongation at Break (%) |
|---|---|---|---|
| S355/S355JR | 165 HB | 27 (20 °C) | 22 |
| S275JR | 160 HB | 27 (20 °C) | 22 |
| Al 7075-T6 | 150 HB | 17 (23 °C) | 10 |
| IS 1030 GRADE 280-580 | 220 HB | 22 (20 °C) | 18 |
| BS970070M20 | 140 HB | 24 (10 °C) | 21 |
| POM | 81 (Shore D) | – | 30 |
| C45 | 200 HB | 25 (23 °C) | 14 |
| 42CrMo4 | 218 HB | 30 (23 °C) | 10 |
| AISI 304 | 215 HB | 60 (−196 °C) | 45 |
| G25 | 215 HB | 12 (−20 °C) | 0.5 |
