Alloy C4
Wst. 2.4610
UNS N06455
Stock program: Available on request
Specification: ASTM B 622/ASME SB 622 /ASTM SB 622 / EN ISO 1127 D4/T3 / Seamless and welded conditions
Maximum expose temperature: 1038°C/1900°F
Alloy C4 is a nickel-chromium-molybdenum alloy with outstandingly high temperature stability. This attribute makes the C4 exceptionally resistant to a wide variety of chemical process environments, such as hot contaminated material, acids, solvents, chloride, acetic, seawater and brine solutions. The alloy C4 gives a design freedom in areas where weld geometry makes excessive heat build-up unavoidable. It’s generally similar to alloy C276, but has a improved stability.
Characteristics
- Resistance to general and localized corrosion and stress corrosion cracking
- High ductility and corrosion resistance
- Resists the formation of grain-boundary precipitates in the weld heat-effected zone
- Excellent resistance at ambient temperatures
- Good resistance to corrosive media under oxidizing and reducing conditions
Market applications:
- Chemical reactors
- Chlorination
- Production of organic acids
- Petro chemical processes
- Pollution central equipment
Technical details
| Technical composition (%) | Fe | Cr | Ni | Mo | Mn | Si | P | C | S | Ti | Co | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C4 | min | - | 14.0 | 65.0 | 14.0 | - | - | - | - | - | - | - |
| max | 3.0 | 18.0 | - | 17.0 | 1.00 | 0.08 | 0.030 | 0.010 | 0.010 | 0.7 | 2.0 |
| Mechanical properties | C4 |
|---|---|
| Tensile strenght (mpa, min) | 790 |
| Yield strength (0.2% offset mpa, min) | 375 |
| Elongation (%, min) | 55 |
| Density / weight (g / cm3 / kg) | 8.84 |