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post #4 of (permalink) Old 1st March 2007
Technical Supremo

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welding steel

Hi EV -boron is added to steel to increase it hardness and strength and shouldn't affect it during welding other than the fumes given off which can be toxic. This is why most repairers use MIG welding - where the welding area is surrounded by an inert gas such as CO2 or Argon. It is recommended that an appropriate mask be worn during operations - or suitable extraction be provided. It should be remembered that all welding or soldering processes give of gas and fumes none of which are good for humans and animals alike. During the manufacture of new cars these processes are usualy carried by robotic machinery - thus no toxic problem. If yor wanting more info on the properties of boron - try a search at Wikepedia.
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