STUDY ON THE EFFECT OFSHIELDING GAS AND FILLER MATERIALON TENSILE STRENGTH AND IMPACT STRENGTH OF MAG WELDED SS409M

Abstract

 SS409M has been widely used in diversified fields of engineering including automobile and chemical industries. The present work analyses the effect of varying shielding gases (argon and argon with 5%nitrogen) and filler material (308L and 309L) during MAG welding of SS 409. The tensile strength and impact strength of weld depends onthe heat input during welding. The experimental work displayed better properties of joint when welded with low heat input, 309L filler material and shielding gas argon with addition of nitrogen. The resultant weld displayed minor difference in impact strength with filler material, shielding gas and heat input variations.