RQT® 701 is a Tata Steel proprietary grade of high-strength quenched and tempered structural steel that is no longer manufactured.
- Previously manufactured by Tata Steel which is one of Europe's largest steel makers
- Combines high yield and tensile strengths with good notch toughness and excellent weldability
- The steel is very similar in its properties to the European steel specification EN 10025 S690QL
For our RQT 701 alternatives, please visit our Quenched and Tempered Steel or EN 10025 S690QL pages.
Composition
Chemical Composition – RQT® 701
Content % (ladle analysis), maximum - plates from 8 mm to 130 mm thick.
| C | Si | Mn | S | P | Cr |
|---|---|---|---|---|---|
| 0.20 | 0.50 | 1.60 | 0.010 | 0.025 | 1.00 |
| Mo | Nb | V | Ni | Cu | B |
| 0.70 | 0.060 | 0.08 | 1.50 | 0.40 | 0.004 |
Carbon equivalent values
| Maximum Ladle CEV (%) | |
|---|---|
| 8 mm to 30 mm thick | 0.43 |
| over 30 mm to 40 mm thick | 0.55 |
| over 40 mm to 100 mm thick | 0.59 |
| over 100 mm to 130 mm thick | 0.61 |
Properties
Mechanical Properties - RQT® 701.
| over 70 to 130 mm thick | ||
|---|---|---|
| Minimum Yield Strength (Mpa) | 690 | 630 |
| Tensile Strength (Mpa) | 790 - 930 | 690 - 930 |
| Minimum Elongation 50 mm Guage (%) | 18 | 18 |
| Minimum Average Impact Energy | 30 J @ -40°C | 30 J @ -40°C |
| Minimum Individual Impact Energy | 21 J @ -40°C | 21 J @ -40°C |
