From a recent article by Andy Probyn of Maxitrak - "As a fresh welders look at model boilers Marco started by saying why not use stainless steel? I related problems with cracking in this sort of boiler unless very careful water quality was maintained. What about the new grades of stainless that avoid this problem Marco asked. I had no reply to this one, except that it might be a step too far for our conservative boiler testers and insurance companies. It looks as though the usual pressures on manufacturers for modern efficiencies are not present in model engineering and anything that is not done the same way as it was a generation ago is not acceptable."Entropy455 said:Although ASTM-A515 steel is the material of choice for constructing boilers, it is very brittle at lower temperatures - I.E. the material would be unacceptable for constructing a bridge, water-tower, or ship hull.
From a recent article by Andy Probyn of Maxitrak - "As a fresh welders look at model boilers Marco started by saying why not use stainless steel?
Tim
Omnimill said:The subject of full size loco boilers came up the other day and it was commented that welded boilers don't seem to be lasting as long as the old riveted ones! I wouldn't know about that but if it is true I doubt there are many competent riveters out there to do the job now anyway... ;D
Maryak said:I am curious, is the above anecdotal or is there some real evidence that the welds are failing. ???
Best Regards
Bob
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