Alloy |
% |
Ni |
Cr |
Mo |
Cu |
N |
C |
Mn |
Si |
P |
S |
254SMO |
Min. |
17.5 |
19.5 |
6 |
0.5 |
0.18 |
|||||
Max. |
18.5 |
20.5 |
6.5 |
1 |
0.22 |
0.02 |
1 |
0.8 |
0.03 |
0.01 |
254SMO Physical properties :
Density |
8.0 g/cm3 |
Melting point |
1320-1390 |
254SMO minimum mechanical properties in the room temperature:
Status |
Tensile strength |
Yield strength |
Elongation
A5 % |
254 SMO |
650 |
300 |
35 |
1.A lot of a wide range use of experience has shown that even iin higher temperatures, 254SMO in the sea water is also highly resistant to corrosion performance gap, only a few types of stainless steel with this performance.
2.254SMO such as bleach paper required for the production of acidic solution and the solution halide oxidative corrosion resistance and corrosion resistance can be compared to the most resilient in the base alloy of nickel and titanium alloys.
3.254SMO due to a high nitrogen content, so its mechanical strength than other types of austenitic stainless steel is higher. In addition, 254SMO also highly scalable and impact strength and good weldability.
4.254SMO with high molybdenum content can make it higher rate of oxidation in the annealing , which after the acid cleaning with rough surface than normal stainless steel is more common than the rough surface. However,has not adversely affected for the corrosion resistance of this steel .