SUS201 Stainless Steel has a close to the mirror brightness, cold tactility hale and hearty, belong to the more avant-garde decoration materials, has a certain performance of acid, alkali resistance, high density, polishing, no bubble, no pinhole corrosion resistance, formability, compatibility and series features such as strong toughness used in heavy industry, light industry, supplies industry and building decoration and other industries.
ASTM A240 201 chemical composition
|
Grade |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
N |
|
SUS201 |
0.15 |
5.5-7.5 |
0.060 |
0.030 |
1.00 |
16.0-18.0 |
3.5-5.5 |
0.25 |
ASTM A240 201 mechanical properties
|
Grade |
Tensile strength, min Mpa |
Yield strength, min Mpa |
Elongation in 2 in % |
Hardness, max |
|
Brinell |
Rockwell B |
|
SUS201 |
515 |
260 |
40 |
241 |
100 |
SUS201 Stainless Steel, the disadvantage is that: the chromium content of less than 18% and low nickel content to reach equilibrium and form the ferrite, therefore, in the 200 series Stainless Steel chrome content to 13.5% ~ 15%, and in some cases dropped to 13% ~ 14%, and its corrosion resistance can't be compared with those of 304 and other similar Steel. In addition, manganese and, in some cases, copper reduce the repassivation effect under acidic conditions common at corrosion sites in deposition areas and crevices. The failure rate of 200 series steel in these conditions is approximately 10-100 times that of 304 stainless steel. The residual sulfur and carbon content in these steels is often not controlled during production, and the material cannot be traceable, even in material recycling. Without the specification of CR-Mn steel, they can become a dangerous scrap mix, resulting in castings containing unexpectedly high levels of manganese.
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