| 摘要 |
PURPOSE:To obtain the titled austenitic alloy pipe having superior workability and creep characteristics and characterized by >=0.25% estimated nitrogen concn. on the inner surface of the pipe by making the pipe of Fe alloy having a specified composition contg. Cr, Ni, etc. CONSTITUTION:The titled alloy pipe having superior workability, weldability and creep characteristics and characterized by >=0.25% estimated nitrogen concn. on the inner surface of the pipe is made of Fe alloy consisting of essentially 15-26% Cr, 8-35% Ni, <=1% Si, <=2% Mn, <0.25% N as basic component and the balance Fe and inevitable impurities or further contg. one or more kinds among <=0.6% Ti, <=0.6% Al, <=3% Mo and <=1% Nb as required. This alloy pipe is suitable for use as an austenitic stainless steel pipe for various kinds of boilers, etc. exposed to hot steam.
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