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Recent content by BobUXL

  1. BobUXL

    17-4 and condition A

    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...
  2. BobUXL

    Citric Acid Passivated 420SS

    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
  3. BobUXL

    TG&P vs Finished CRS

    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...
  4. BobUXL

    Chromium Carbides in F44 Stainless Steel

    What's the carbon level in the material? Bob
  5. BobUXL

    HELP 420S37 Stainless Steel

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

    Welding Titanium and Stainless

    Again, I thank everyone that responded. Bob
  7. BobUXL

    17-4Ph and contact with food

    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...
  8. BobUXL

    17-4Ph and contact with food

    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...
  9. BobUXL

    17-4Ph and contact with food

    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...
  10. BobUXL

    i feel the need the need for speeds and feeds !!

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

    A276 Type 316 Condition B

    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...
  12. BobUXL

    SS316L SN - Fatigue data

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

    17-4Ph and contact with food

    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...
  14. BobUXL

    Welding Titanium and Stainless

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

    Welding Titanium and Stainless

    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...
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