Austenite Stainless Steel
High Temperature Alloy
◆904L can not only solve the general corrosion of sulfuric acid, phosphoric acid and acetic acid, but also solve the problems of chloride pitting corrosion, crevice corrosion and stress corrosion.
◆253Ma (S30815) is a heat-resistant pure austenitic stainless steel developed on the basis of 21Cr-11Ni stainless steel through N alloying and adding rare earth element Ce. It is mainly used in the production of plates.
◆254SMo (F44/S31254) is a very high-end austenitic stainless steel, which is often used as a substitute for high-nickel and titanium alloys. It is mainly used in many corrosive applications such as chemical and petrochemical processes and chloride solutions.
◆Al-6XN(N08367) is suitable for pumps, valves, flanges and piping systems of oil and gas, chemical and electric power.
Chemical composition
|
Grade |
C |
Si |
Mn |
S |
P |
Cr |
Ni |
Mo |
Cu |
N |
other |
|
no greater than |
|||||||||||
|
904L |
0.02 |
1 |
2 |
0.015 |
0.03 |
19～21 |
24～26 |
4～5 |
1～2 |
- |
- |
|
253Ma |
0.05～0.1 |
1.4～2 |
0.8 |
0.03 |
0.04 |
20～22 |
10～12 |
- |
- |
0.14～0.2 |
Ce0.03～0.08 |
|
254SMo |
0.02 |
0.8 |
1 |
0.01 |
0.03 |
19.5～20.5 |
17.5～18.5 |
6～6.5 |
0.5～1 |
0.18～0.22 |
- |
|
Al-6XN |
0.03 |
1 |
2 |
0.03 |
0.04 |
20～22 |
23.5～25.5 |
6～7 |
≤0.75 |
0.18～0.25 |
－ |
Alloy property minimum
|
Grade |
state |
tensile strength RmN/m㎡ |
Yield Strength Rp0.2N/m㎡ |
Elongation As% |
Brinell hardness HB |
|
904L |
Solution treatment |
490 |
215 |
35 |
- |
|
253Ma |
Solution treatment |
650 |
310 |
40 |
210 |
|
254SMo |
Solution treatment |
650 |
300 |
35 |
- |
|
Al-6XN |
Solution treatment |
835 |
480 |
42 |
- |
