Name: Ronald
Status: Other
Age: 50s
Location: N/A
Country: N/A
Date: N/A
Question:
What grade of steel is corrosion resistant besides
stainless steel?
Replies:
Depending on your definitions of "grade" of steel and what you mean by
"corrosion", Cor Ten steel is considered corrosion resistant even though it
works on the principle of producing a surface layer of oxide material (a
type of rust) that protects the underlying steel from further corrosion. It
is used a lot on buildings and bridges. You can also consult a materials
handbook in a good reference library or contact the American Institutute of
Steel Construction (AISC) [I believe they are in Pittsburgh, but not sure]
for additional information on corrosion resistant steels. Another item is
galvanized steel, but I do not know if you are looking at an application
involving large structural steel members or small metal items.
Since you confined your answer to steel, I presume you are not looking at
titanium (used in golf clubs, etc.) or anything in the zirconium family
(like zircaloy--used in making nuclear fuel rods) for its corrosion
resistant properties. These metals are expensive.
I am not a "metals" guy and this is my limited knowledge at present. Hope it
helps a little.
John S.
Galvanized, galvannealed, and aluminized are all types of processed
steel that would be corrosion resistant.
Steel grades with greater than 8% alloying metals would be pretty much
corrosion resistant. Looking through my handbook, I did not see any
carbon steels with less than 8% alloying metals. All stainless grades
have much higher than 8% alloy metals.
Tool steel grades are high alloy. Superalloy grades are even higher
(usually not even based on iron) and are designed for use above 540
degrees C (1000 F)!
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