Ni-based alloy improved in oxidation-resistance, high temperature strength and hot workability

A nickel-based alloy improved in oxidation-resistance, high temperature strength and hot workability consisting essentially of, in mass percentage, C:

• 0.003 to 0.1%, Si:
• 1.0% or less, Mn:
• 2.0% or less, Cr:
• 12 to 32%, Fe:
• 20% or less, Mg of 0.001 to 0.04%, Al:
• 0.5% or less, at least one element, of not more than 2.5% in total, selected from the group consisting of Nb, Ta and V, at least one of Mo and W as Mo+1/2W being 0.5% to 4.0%, impurity elements of S:
• 0.01% or less, but the ratio of the Mg-content to the S-content being 1 or more, and Ti:
• 0 inclusive to 0.02%, and the rest being Ni and incidental impurities.

A nickel-based alloy improved in oxidation-resistance, high temperature strength and hot workability consisting essentially of, in mass percentage, C:

• 0.003 to 0.1%, Si:
• 1.0% or less, Mn:
• 2.0% or less, Cr:
• 12 to 32%, Fe:
• 20% or less, Mg:
• 0.001 to 0.04%, Al:
• 0.5% or less, at least one element, of not more than 2.5% in total, selected from the group consisting of Nb, Ta and V, at least one of Hf:
• 1.5% or less and Zr:
• 1.0% or less, but the total amount of Hf and Zr being 0 inclusive to 2.0%, at least one of rare earth elements:
• 0.2% or less, Y:
• 0.5% or less and Sc:
• 0.2% or less, but the total amount of rare earth elements, Y and Sc being 0.6% or less, impurity elements of S:
• 0.01% or less, but the ratio of the Mg-content to the S-content being 1 or more, and Ti:
• 0 inclusive to 0.02%, and the rest being Ni and incidental impurities.