Alloy 602CA
2.4633 – N06025
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Material description
The material 2.4633 is a high-carbon nickel-chromium-iron alloy with added microalloying elements titanium, zirconium, aluminium and yttrium.
2.4633 has excellent high-temperature creep values and outstanding fatigue strength in HCF and LCF mode. In addition, the material 2.4633 (Alloy 602CA) has exceptional oxidation resistance at high temperatures.
AN OVERVIEW OF THE PROPERTIES OF 2.4633:
- Excellent fatigue strength (in HCF and LCF mode)
- Excellent high-temperature creep values
- Exceptional resistance to oxidation
Applications
- Chemical and petrochemical industry
- Production of hydrogen
- Automotive industry (e.g. glow plugs, exhaust systems)
- Industrial furnace construction
Chemical composition in %
| ASTM B166/564 | VdTÜV Material sheet 540 | |
|---|---|---|
| Ni | Rest | Rest |
| Cr | 24,0 – 26,0 | 24,0 – 26,0 |
| Fe | 8,0 – 11,0 | 8,0 – 11,0 |
| Mn, max. | 0,15 | 0,1 |
| Al | 1,8 – 2,4 | 1,8 – 2,4 |
| C | 0,15 – 0,25 | 0,15 – 0,25 |
| Cu, max. | 0,1 | 0,1 |
| Si, max. | 0,5 | 0,5 |
| S, max. | 0,010 | 0,010 |
| Ti | 0,1 – 0,2 | 0,1 – 0,2 |
| P, max. | 0,020 | 0,020 |
| Zr | 0,01 – 0,10 | 0,01 – 0,10 |
| Y | 0,05 – 0,12 | 0,05 – 0,12 |
Mechanical properties
| solution annealed | Bar D ≤ 102 mm ASTM B166 | Moulded steel | bar | forging D ≤ 100 mm |
|---|---|---|
| Rm (MPa) | ≥ 680 | ≥ 675 |
| Rp 0,2 (MPa) | ≥ 270 | ≥ 270 |
| Rp 1,0 (MPa) | ≥ 310 | |
| A (%) | ≥ 30 | ≥ 30 |
| Av (J) | l ≥ 55, q ≥ 30 |
Mechanical properties
| solution annealed | Forging D ≤ 102 mm | D < 102 ≤ 305 mm ASTM B564 | |
|---|---|---|
| Rm (MPa) | ≥ 680 | ≥ 580 | |
| Rp 0,2 (MPa) | ≥ 270 | |
| Rp 1,0 (MPa) | ||
| A (%) | ≥ 30 | ≥ 15 | |
| Av (J) |
The specified values are non-binding guide values.