China · YB
08F
YB/T 4222:2010 — Coated steel wire for overhead line helical fittings
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.05 | 0.11 | ||
| Cr | 0.1 | |||
| Cu | 0.25 | |||
| Mn | 0.25 | 0.5 | ||
| Ni | 0.3 | |||
| Si | 0.03 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| Condition not stated | ≥4 | |||||
| steel wire 1.75mm < d ≤ 2.25mm | ≥1450 | |||||
| steel wire 2.25mm < d ≤ 2.75mm | ≥1410 | |||||
| steel wire 2.75mm < d ≤ 3mm | ≥1410 | |||||
| steel wire 3.5mm < d ≤ 4.25mm | ≥1380 | |||||
| steel wire 3mm < d ≤ 3.5mm | ≥1410 | |||||
| steel wire 4.25mm < d ≤ 4.75mm | ≥1380 | |||||
| steel wire d > 4.75mm | ≥1380 |