The effects of grain boundary carbides on the tensile and impact properties of Inconel 600 at 25 and -196 degreesC were studied. Unlike the type 316 stainless steel which can be severely embrittled, grain boundary carbides cause only a significant loss in the reduction of area, but, otherwise, little effect on other tensile properties. Deep grain boundary cracks are observed on the fracture surfaces. Charpy V-notch impact specimens are not completely fractured, even at -196 degreesC in samples with grain boundary carbides.