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AL 433™ is a stainless steel in the ferritic family of alloys with Type 409 and Type 439. The AL 433 alloy contains 20% chromium for pitting and crevice corrosion resistance in the presence of chlorides and resistance to oxidation at elevated temperatures. An addition of 0.5% copper adds to corrosion resistance. Columbium (niobium) in the amount of about 0.5% is added for elevated temperature strength and also provides resistance to intergranular corrosion.The AL 433 alloy has a body-centered cubic, ferritic microstructure at all temperatures below the melting point. Fine columbium carbides may be visible in the ferrite matrix microstructure.The AL 433 alloy can be machined, welded and formed like other stabilized, ferritic stainless steels. AL 433 alloy is an excellent candidate for elevated temperature applications where strength, combined with fabricability are needed.Information provided by Allegheny Ludlum Corporation.
Steel is prized for its strength and mechanical properties. It is created when iron is mixed with carbon. Stainless steels also include chromium, which provides a surface-protecting layer, in a process called “passivation.” Passivation helps maintain stainless steel’s shiny, silver finish.
The ratio of these elements, as well as additions to the mix like molybdenum, nickel, or copper, change the mechanical properties of the metal.
304 stainless steel is the most common commercial-grade alloy. It is also known as 18/8 because it contains around 18% chromium and 8% nickel. 430 stainless steel is less expensive because it does not contain nickel.
These two alloys are chosen for grills and barbeques for a few reasons. They both are food-safe because of their corrosion resistance: in acidic environments, the 430 is slightly more vulnerable to corrosion, but only with prolonged exposure. Both alloys resist rusting in the wet conditions that might be found on a backyard patio.
Commodity | Austenitic, Ferritic, Martensitic, Duplex, Cold rolled, Hot rolled |
Grade | 201, 202, 301, 304, 304j1, 304l, 321, 309s, 310s, 2205, 409l, 410, 410s, 420, 420j1, 420j2, 430, 439, 409l, 443, 444, etc |
Standard | ISO, JIS, ASTM, AS, EN, GB |
Surface | N0.1, N0.2, N0.3, N0.4, N0.5, N0.6, N0.7, N0.8, 2D, 2B, HL, BA, 6K, 8K, etc |
Thickness | 0.1-200mm |
Width | 10-2000mm |
MOQ | 1MT |
Packaging | Export standard, seaworthy |
Trade Term | FOB, CFR, CIF |
Transport Type | Container, bulk and train |
Loading port | qingdao, tianjin, etc |
Payment terms | T/T, L/C at sight,West Union,D/P,D/A,Paypal |
Delivery time | 15-35 days after confirmed order |
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Liaocheng Economic and Technological Development Zone, Shandong Province, China
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