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Bohler A 7 CN-UP description: SAW wire/flux combination of type S 18 8 Mn / (ER307) for numerous applications. BÖHLER A 7-UP // BB 203 yields a weld deposit offering exceptionally high ductility and elongation together with outstanding crack resistance. There is no fear of embrittlement when operating down to service temperatures of -100°C or above +500°C. The scaling resistance goes up to +850°C. When working at service temperatures above +650°C please contact the supplier. The weld metal can be post weld heat treated without any problems. The deposit will work harden and offers good resistance against cavitation. Ductility is good even after high dilution when welding problem steels or when subjected to thermal shock or scaling. An excellent alloy providing cost effective performance. B0HLER BB 203 is a fluoride-basic, agglomerated flux providing good operating characteristics, smooth beads and a low hydrogen weld metal. For information regarding this sub-arc welding flux see our detailed data sheet.

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