Hastelloyc C-4 is an austenitic low carbon nickel-molybdenum chromium alloy.
The main difference between HastelloyC-4 and other early developed alloys of similar chemical composition is the low carbon, ferrosilicate, and tungsten content.
Such chemical composition makes it show excellent stability at 650-1040℃, improve the ability to resist intergranular corrosion, under appropriate manufacturing conditions can avoid edge line corrosion sensitivity and weld heat affected zone corrosion.
Alloy |
% |
Fe |
Cr |
Ni |
Mo |
Co |
C |
Mn |
Si |
S |
P |
W |
V |
Hastelloy C-4 |
Min. |
- |
14.0 |
balance |
14.0 | - | - | - | - | - | - |
2.5 |
- |
Max. |
3.0 |
18.0 |
17.0 |
2.0 | 0.015 | 3.0 | 0.1 | 0.01 | 0.03 | 3.5 | 0.2 |
Density
|
8.94 g/cm³
|
Melting point
|
1325-1370 ℃
|
Status
|
Tensile strength
Rm N/mm² |
Yield strength
Rp 0. 2N/mm² |
Elongation
As % |
Brinell hardness
HB
|
Solution treatment
|
690
|
276
|
40
|
-
|
Bar/Rod | Strip/Coil | Sheet/Plate | Pipe/Tube | Forgings |
ASTM B335 | ASTM B333 | ASTM B622,ASTM B619,ASTM B626 | ASTM B564 |
• Excellent corrosion resistance to most corrosive media, especially in reduced condition.
• Excellent local corrosion resistance in halides.
• Flue gas desulfurization system
• Pickling and acid regeneration plants
• Acetic acid and agro-chemical production
• Titanium dioxide production (chlorine method)
• Electroplating