Alloy C4
2.4610 – N06455
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Material description
The material 2.4610 is an austenitic nickel-molybdenum-chromium alloy with a low carbon, iron and silicon content.
Thanks to the combination of chromium with a high molybdenum content, this alloy has excellent resistance to a wide range of chemical media such as contaminated, reducing mineral acids, chlorides and organic and inorganic chloride-contaminated media. The chemical composition of the material also ensures good structural stability and high resistance to sensitisation.
In addition, 2.4610 (Alloy C4) has excellent resistance to pitting, crevice and stress corrosion cracking.
AN OVERVIEW OF THE PROPERTIES OF 2.4610:
- Excellent resistance to many chemical media
- Excellent resistance to pitting, crevice and stress corrosion cracking
- Good structural stability
- High resistance to sensitisation
APPLICATIONS
- Flue gas desulphurisation
- Chemical industry (e.g. acetic acid production, chemical fertilisers)
Chemical composition in %
| ASTM B574 | VdTÜV Material sheet 424 | |
|---|---|---|
| Mo | 14,0 – 17,0 | 14,00 – 17,00 |
| Cr | 14,0 – 18,0 | 14,50 – 17,50 |
| Fe, max. | 3,0 | 3,00 |
| Co, max. | 2,0 | 2,00 |
| C, max. | 0,015 | 0,009 |
| Si, max. | 0,08 | 0,050 |
| Mn, max. | 1,0 | 1,00 |
| P, max. | 0,04 | 0,020 |
| S, max. | 0,03 | 0,010 |
| Ti, max. | 0,7 | 0,70 |
| Ni | Rest | Rest |
Mechanical properties
| solution annealed | Bar D ≤ 88,9 mm | Bar | forging D ≤ 160 mm | D ≤ 250 mm |
|---|---|---|
| Rm (MPa) | ≥ 690 | 700 – 900 |
| Rp 0,2 (MPa) | ≥ 276 | ≥ 280 |
| Rp 1,0 (MPa) | ≥ 315 | |
| A (%) | ≥ 40 | ≥ 40 |
| Av (J) | ≥ 96 |
The specified values are non-binding guide values.