Approximate Relative Costs of Various Alloys. 4

[Christine74]

Does anyone know of a good rule-of-thumb for estimating the costs of various corrosion-resistant alloys relative to the cost of carbon steel? Something fairly comprehensive would be helpful in coming up with rough order-of-magnitude cost estimates for various alloy alternatives.

Let's assume I'll just be dealing with plate < 1 inches thick. About how many times more would the following alloys cost as compared to carbon steel?

304 SS
316 SS
410 SS
Duplex SS
Titanium
Hastelloy
Zirconium
AL6XN
Nickel 200
Monel 400
Inconel 600
Incoloy 800
Alloy 20CB

Thanks!

-Christine

 

[EdDanzer]

The size, shape and market price of any of these materials can have a dramatic affect on the price relative to carbon steel.
It is always best to contact 2 or 3 companies about the cost of any of these materials when considering them for a part.

 

[tripleZ]

http://www.aksteel.com/pdf/markets_products/stainless/AKSSPrBk091506.pdf

Go through the PDF to pull out what you need. You'll need to play with the URL a bit to get to the portion of the site with surcharge information. This won't be exact, but it'll give you an idea where to start, and maybe give you some ideas on how to set up a spreadsheet to calculate what you need.

 

[EdStainless]

Well, the stainless mills print price lists, but they have nothing to do with reality.
You also have to make sure that you know the surcharges for each alloy.
I can put then in order, but surcharges are so wild I am not sure.
These are extrapolated. But should give you some rough idea. (base + surcharge)

304 SS, 410 SS, (0.90 + 1.35) (0.90 + 0.10)
316 SS, (1.20 + 2.15)
Duplex SS, assume 2205, (2.00 + 1.80)
Alloy 20CB (6.00 + 5.10)
Incoloy 800 (6.25 + 4.20)
AL6XN (4.90 + 5.10)
Hastelloy, C276?, (11.90 + 12.60)
Monel 400 (8.50 + 8.55)
Inconel 600 (8.75 + 9.85)
Nickel 200 (12.50 + 13.40)
Titanium
Zirconium

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Rust never sleeps
Neither should your protection

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[TVP]

Christine74,

FYI, the prices that EdStainless provided are in US $/pound. Titanium is a fickle beast, with historic prices of the raw material (not final product forms like plate, sheet, wire) hovering at $5/lb before the latest aerospace/military boom cycle. The last price data I saw was early 2006, with the standard aerospace alloy Ti-6Al-4V being quoted at $24-25/pound. Scrap prices for that alloy would be lower, but essentially all of this is consumed by the primary melters and investment casting companies. Commercially Pure (CP) titanium would be less than Ti-6Al-4V, with a wild guess being $12-15/pound.