ROCKHARD 400
Wear Resistant Steel Plates – Jindal Steel & Power
1. General Description
Introducing the new generation of ROCKHARD Wear Resistant Plates from Jindal Steel and Power – ROCKHARD 400, 450 & 500. Produced through cutting-edge Quenched & Tempered process, these plates possess an exceptional combination of hardness, toughness and dimensional accuracy, ensuring ease of fabrication and long service life.
2. Dimension Range
- Thickness: 8 – 100 mm
- Width: 1500 – 4800 mm
- Length: As per requirement
3. Mechanical Properties
| Grade | Hardness (BHN) | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Impact Toughness |
|---|---|---|---|---|---|
| ROCKHARD 400 | 360 Min (Typical 360–450) | 1100 | 1250 | 12% | 25J(avg) / 20J(ind) at -40°C |
| ROCKHARD 450 | 425 Min (Typical 425–500) | 1150 | 1300 | 12% | 25J(avg) / 20J(ind) at -40°C |
| ROCKHARD 500 | 470 Min (Typical 470–550) | 1250 | 1600 | 10% | 25J(avg) / 20J(ind) at -40°C |
4. Applications
- Dump body trucks & loaders
- Bulldozer buckets & shovels
- Crushers, mixers, chutes & hoppers
- Mining, construction & material handling equipment
5. Welding & Fabrication
ROCKHARD Plates can be welded using low hydrogen electrodes (E7018H4 / E8018G). Preheating may be required for thickness above 30 mm. Interpass temperature should not exceed 220°C. Plates are not intended for further heat treatment.