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musashi99 - Solution annealed materials up to about 1-1/4" is diameter are first hot rolled in coil form, solution annealed and can be processed in one of 2 ways - (1) straighten/cut/ground or cold drawn/straighten/cut. Depending on the mill, changing from a cold drawn operation to a...

One thing that you may want to consider about citric acid. I have been told that citric acid is a good chrome and nickel getter. So reprocessing of the acids become very expensive and in some cases, reprocessors are dumping the acids due to these reasons. Has anyone else heard of this? Bob

Besides the cost, you need to examine the level of defects you can tolerate. Cold finished steels, in particular stainless steels are governed by ASTM A-484, which outlines defect levels as well as bar tolerances. A cold finished bar can have defects up to 1% bar diameter. Turned, ground and...

What's the carbon level in the material? Bob

You can also try Ugitech (formerly Ugine Savoie Imphy). They make 4 versions of 420 and sell in the UK Bob

Again, I thank everyone that responded. Bob

Hello Everyone, All the suggestions and comments were good and very valid. However, not many of these suggestions are in anyone's standard inventory. With an austenitic, you have to order a cold worked material which no one really stocks, especially these days. 17-7 is the same. Not really...

The material is Custom 450 and the reason he wants to change is because of the lack of availability. They want a material that is readily available. We thought about a duplex, but they need high strength and impact resistance. Duplex alloys just will not have the strength needed for the...

The application is a shaft in a blender (part of the shaft will be exposed). The food slury could be just about anything and temperature could be up maybe 120F. I saw the same web page, but just having a product brochure say it's used for food will not be enough to convince a government...

Most of the sites I know of are not free. But many stainless mills have this information in their datasheets. Bob

316 in condition B is a difficult alloy to find. Mills like Ugitech (the old Ugine-Savoie mill) will make the alloy but only in mill runs only. And this will be the case with most all mills. My question about using 630 in the H1150 condition, do you have a requirement to use the material in...

Extensive fatigue information can be found in the "Aerospace Structural Metals Handbook". Bob

I am working with a customer that wishes to change a shaft in food processing equipment to 17-4. But according to NSF guidelines, the material needs have chrome limits above 16%. Within these guidelines and the material properties he wishes to have (there is impact concerns), 440 A, B or C are...

Thanks Guys, This help me go into the proper direction. Thanks, Bob

I have an application where a titanium part for a dental instrument needs more mass and need to weld this part to a piece of stainless. We tried welding Ti-6-4 to 304L with absolutly no success via laser welding. Is there a procedure that can make this successful and/or is there a better...

mcguire, Thanks for the tip. This will be very helpful. Bob

mcguire, First off, I do not know whether this is available in tube or plate form. I do know it is available in bar form from Ugitech (Previously known Ugine Savoie Imphy)through Ugine Stainless & Alloy here in the US. I would imagine that the plate could be purchased through Industeel (a...

I would like to thank all for their contributions. Bob

Chad, The simple answer is no. They are basically the same alloy with the exception of sulfur. The 303 can also be very low carbon. I have seen some at a .015 carbin level. One other thing to realize, 303 will crack, especially in small diameters due to the sulfide stringers whereas 304...

Hi everyone, Sorry I took so long to respond. Being on the road and having to put up with dial-up, well you know. Here are some threads I have read about some of the differences. 330-82054, 794-64209, & 338-58971. These talk about some of the details, but would like to get more detail...