Romania · STAS
C110
SR EN ISO 11960
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.35 | |||
| Cr | 0.4 | 1.5 | ||
| Mn | 1.2 | |||
| Mo | 0.25 | 1 | ||
| Ni | 0.99 | |||
| P | 0.02 | |||
| S | 0.05 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| Casing and tubing;12.71 < t ≤ 19.04 mm, Heat treated | 758–828 | ≥793 Total elongation under load:0.7% | 10–16 Lo=50.80mm | HR ≤30 HRC；HB ≤286 HBW | ||
| Casing and tubing;19.05 < t ≤ 25.39 mm, Heat treated | 758–828 | ≥793 Total elongation under load:0.7% | 10–16 Lo=50.80mm | HR ≤30 HRC；HB ≤286 HBW | ||
| Casing and tubing;t ≤ 12.70 mm, Heat treated | 758–828 | ≥793 Total elongation under load:0.7% | 10–16 Lo=50.80mm | HR ≤30 HBW;HRC;Allowalbe hardness variation HRC:3；HB ≤286 HBW;HRC;Allowalbe hardness variation HRC:3 | ||
| Casing and tubing;t ≥ 25.40 mm, Heat treated | 758–828 | ≥793 Total elongation under load:0.7% | 10–16 Lo=50.80mm | HR ≤30 HRC；HB ≤286 HBW |