The material 2.4642 is a nickel-chromium alloy.
The alloy has excellent resistance to high-temperature and moisture corrosion as well as good resistance to oxidising media. In addition, 2.4642 (Alloy 690) has high strength and good metallurgical stability. These properties make the material very easy to machine.
AN OVERVIEW OF THE PROPERTIES OF 2.4642:
- Resistant to high-temperature and moisture corrosion
- Resistance to oxidising media
- High strength
- Good metallurgical stability
- Power plant technology
- Coal gasification
- Saltpetre, sulphuric and hydrochloric acid processing
Chemical composition in %
|ASTM B166/564||DIN 17742|
|Cr||27,0 – 31,0||27,0 – 31,0|
|Fe||7,0 – 11,0||7,0 – 11,0|
|solution annealed||Bar | forging|
ASTM B166 | ASTM B564
D ≤ 100 mm
|Rm (MPa)||≥ 586||≥ 590|
|Rp 0,2 (MPa)||≥ 241||≥ 240|
|A (%)||≥ 30||≥ 30|
The specified values are non-binding guide values.