China · YB
72A
YB/T 146:1998 — Hot rolled wire rods for prestressed
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.7 | 0.75 | ||
| Cu | 0.2 | |||
| Mn | 0.3 | 0.6 | ||
| P | 0.025 | |||
| S | 0.025 | |||
| Si | 0.12 | 0.32 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| wire rod 10.5mm ≤ d ≤ 13mm, hot rolled | 940–1060 | ≥25 | ||||
| wire rod 8mm ≤ d ≤ 10mm, hot rolled | 960–1080 | ≥25 |