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  1. sbrunette

    Proper pre & post heat for welding 4140 annealed

    I just got the specs of the welding wire we use for this assembly: METALLOY 71, has a H4 specification. Thanks for all the help, sbrunette
  2. sbrunette

    Proper pre & post heat for welding 4140 annealed

    DVME, The material spec sheet for 4140 has P (max .035) and S (max .040). Thanks, sbrunette
  3. sbrunette

    Proper pre & post heat for welding 4140 annealed

    metengr & DVWE, I have my welding supplier looking to see if our weld wire meets the H4 specifications. With the use of a "low hydrogen electrode" the DHT can be omitted, how about the PWHT? Thanks, sbrunette
  4. sbrunette

    Proper pre & post heat for welding 4140 annealed

    Filler wire per our welding supplier is metalcore met71 when bonding A500B to 4140. PWHT, are you refering to post heating? Thanks, sbrunette
  5. sbrunette

    Proper pre & post heat for welding 4140 annealed

    Hello, I am having a hard time finding out the proper technique of welding 4140 in the annealed state to a A500B structural tube. The 4140 shaft (2.375" dia.) runs through the tubing center (4.5" outer dia-with a 2.5" center dia.) the 4140 shaft sticks out either side of the tubing, a 5/8" weld...

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