Attention
End shackles A do not show equal strength in all directions and must be operated at loads directed along their axes (along the shackle leg).
The end shackle is used to connect the anchor chain to the anchor. To achieve higher strength the shackle has an oval bolt secured by a key.
End shackles A do not show equal strength in all directions and must be operated at loads directed along their axes (along the shackle leg).
Materials
1 – carbon steel;
2 – alloy steel;
3 – alloy steel with additional heat treatment.
External coating
BIT – bitumen paint, 1 layer, ISO 12944-5
Standard
ISO 1704
Strength characteristics meet Class Rules including IACS design, construction and operation standards.
| Chain grade | 1 | 1 | 2 | 3 |
|---|---|---|---|---|
| Ultimate tensile strength, MPa, not less than | 300–400 | 400–490 | 490–690 | 690 |
| Contraction at break, %, not less than | – | – | – | 40 |
| Elongation at break, %, not less than | 30 | 25 | 22 | 17 |
| Impact energy KV, J, not less than | – | – | 47 | 60 |
| Impact bending test temperature, °C | – | – | 0 | 0 |
Olga Sharonova
