Type of steel for stove grate?

Discussion in 'Stove Forum' started by hikerduane, Sep 3, 2020.

  1. hikerduane

    hikerduane Subscriber

    Offline
    Joined:
    Mar 1, 2010
    Messages:
    7,526
    Can't find steel stock locally to fabricate a grate for one of my Campus 5 stoves, been dragging my feet to make one, called procrastination I think. Even online, I can't find dimensions that my other 5 uses, so figure maybe just use next size up. What grade or type steel should I buy? Cold or hot rolled, grade?
    Also, since I can't find anyone local to help me, can pieces then be brazed?
    Duane
     
  2. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

    Offline
    Joined:
    Aug 25, 2009
    Messages:
    10,858
    Location:
    Lancashire, United Kingdom
    @hikerduane I’d not be too choosy about the grade of steel Duane, but a silbraze-jointed part that gets red-hot is going to risk melting a high (55%) silver content silbraze.

    Go for a brazing rod with less silver content or a bronze brazing rod - trade name Sifbraze 1 for example.

    John
     
  3. hikerduane

    hikerduane Subscriber

    Offline
    Joined:
    Mar 1, 2010
    Messages:
    7,526
    Thank you John, using Map/Pro gas in the new torch I bought that uses that gas. At least I found a source for one size of steel I need, they do have the next size up for the other dimension I need.
    Duane
     
  4. hikerduane

    hikerduane Subscriber

    Offline
    Joined:
    Mar 1, 2010
    Messages:
    7,526
    I ordered some steel a little bigger than was original, only stuff I could find. One supplier had one thickness, but not the width and so forth with other suppliers. Shipping for my order was more than the steel.
    The material I had was brass, don't know how it would stand up as a grate, so ordered the steel.
    Duane
     
  5. snwcmpr

    snwcmpr SotM Winner Subscriber

    Offline
    Joined:
    Nov 16, 2011
    Messages:
    16,200
    Location:
    North Carolina
    "Sifbronze 1" .. ?? I did an internet search and that was all I saw.
     
  6. Laitch

    Laitch Subscriber

    Offline
    Joined:
    Dec 21, 2010
    Messages:
    162
    Sil-Braze or SilBraze.
     
  7. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

    Offline
    Joined:
    Aug 25, 2009
    Messages:
    10,858
    Location:
    Lancashire, United Kingdom
    Yes, that’s the stuff Ken. I typed it wrongly.
    Silbraze is the silver alloy stuff, Sifbronze doesn’t contain silver and has a higher melting point for specialised applications.
     
  8. snwcmpr

    snwcmpr SotM Winner Subscriber

    Offline
    Joined:
    Nov 16, 2011
    Messages:
    16,200
    Location:
    North Carolina
    I looked it up, good stuff. Need to add it to my list.
    Thank you.
     
  9. Don Octavio Netherlands

    Offline
    Joined:
    Apr 17, 2020
    Messages:
    34
    Location:
    The Netherlands
  10. Gunner

    Offline
    Joined:
    Mar 16, 2018
    Messages:
    418
    Sorry, I've only just picked up on this thread - I'd recommend using hot rolled rather than cold rolled steel. Reason - the cold rolling process gives a very good finish and dimensional accuracy (neither of which is critical in this application), but it also imposes stress on the grain structure. At ambient temperature this makes no odds, but using it as a grate is another matter. Trouble is the temperature gradient is quite severe, in that whilst the outside of the grate may only be at around 200 - 250 F, the centre of the grate is up to dull red heat - over 1000 F, which can lead to a fair amount of distortion if cold rolled steel is used.
    In contrast, the hot rolling process gives a roughish finish, and nowhere near the dimensional accuracy, but because the rolling is done with the steel at bright red heat, and it's then allowed to air cool, that process stress-relieves the grain structure of the steel, so that it's far less likely to warp when heated as unevenly as it would be in a grate.

    HTH,
    Gunner
     
  11. Kiwi NZ

    Kiwi NZ Subscriber

    Offline
    Joined:
    Mar 8, 2016
    Messages:
    389
    Location:
    New Zealand
    @Gunner Thanks that is great advice, I am about to make a grate for a stove and have hot rolled steel available.
     
  12. Gunner

    Offline
    Joined:
    Mar 16, 2018
    Messages:
    418
    @Geoff Chirnside
    You're welcome, mate - and we will, of course, expect pictures!

    Best regards,
    Gunner