Customization: | Available |
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Certification: | ISO |
Surface: | Spiral |
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Diameter (mm) | 2.5 3.0 3.2 3.4 3.8 | 4.0 4.8 5.0 6.0 7.0 | 7.5 8.0 9.0 | 10.0 11.0 12.0 |
Grade (MPa) | 1770-1860 | 1670-1770 | 1570-1670 | 1470-1570 |
The specifications and technical parameters | ||||||||
Nominal Dia (dn/mm) |
Tolerance | Tensile Strength σ b/MPA Not less than |
Yield Stength (σ p0.2/MPA) Not less than |
Elongation at max load (Lo=200mm) δ gt/% Not less than |
Bending Times Not less than |
Bending Radius R/mm |
Relaxation Priperties | |
The relaxation at 1000h (initial load to 70% of nominal tensile strength ) (r%) Not more than |
||||||||
4.8 | ± 0.05 | 1470 1570 1670 1770 1860 |
1290 1380 1470 1560 1640 |
3.5 | 4 | 15 | 2.0 | |
5.0 | ||||||||
6.0 | ± 0.05 | 1470 1570 1670 1770 |
1290 1380 1470 1560 |
4 | 15 | |||
6.25 | ||||||||
7.0 | 20 | |||||||
8.0 | ± 0.06 | 1470 1570 |
1290 1380 |
4 | 20 | |||
9.0 | 25 |