| 摘要 |
PROBLEM TO BE SOLVED: To provide an Ni based alloy which causes little generation of cracking, breaking or the like in hot working such as forging and hot rolling of an ingot or a slab, has good hot workability or the like, and further has excellent intergranular corrosion resistance and durability. SOLUTION: The Ni based alloy excellent in hot workability is provided with the componential composition (by weight) (a) containing <=0.045% C, 3 to 25% Fe, 14 to 26% Cr, <=4% Nb, 0.005 to 0.04% N, <=1.0% Si, <=0.2% Al, <=0.030% P and <=1.0% Mn, and (b) in which, as for S (ppm) and O (ppm), S<=150 ppm, and also, O (ppm)<=100-S/3.75 are satisfied; wherein, the contents of S (ppm) and O (ppm) are desirably smaller.
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