Or what is AISI 446?
AISI 446 is a heat resistant chrome ferritic stainless steel with additional aluminum. It is resistant to sulfuric gas oxidation and can reach 1150 degree C.
Applications
Steam generator.
UNS Number
S44600
Ok, let's start with the chemical composition (AISI 446) .
chemical composition
C, Carbon max.
0.20
Mn, Manganese max.
1.50
P, Phosphorus max.
0.040
S, Sulfur max.
0.030
Yes Silicon Max.
1.00
Cr, Chromium
23.0–27.0
Ni, Nickel
0.75
escoamento limit
275MPa
Traction resistance
515MPa
Extension (min.)
20 percent.
Hardness
217 HBW
Density
7.7g/cm3, 7700kg/m3.
modulus of elasticity
200GPa.
Poisson's ratio
0.27.
admissible voltage
It depends on the project (and its security factor).
AISI material ranking
Engineers generally look for cheaper material that we can use more and use a different approach to material selection (to help novice students).
I classify materials according to their clearance limits and AISI 446 is currently 19 not my clearance limit index. Isso means that there are other 18 more resistant materials.
Note: I analyzed 77 materials to create a limit index escoamento. Check my material comparison article for more details.
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