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本文描述了新开发的25Ni-20Cr(NF709)钢种的实验方法和实验结果,结论是:①与347H和17-14CuMo钢相比,NF709钢在600～750℃下,具有成倍以上的蠕变断裂强度和抗腐蚀性能,②NF709钢的焊
In this paper, the experimental methods and experimental results of the newly developed 25Ni-20Cr (NF709) steel are described. The conclusions are as follows: (1) Compared with 347H and 17-14CuMo steels, NF709 steel has a doubling of creep at 600-750 ℃ Variable fracture strength and corrosion resistance, ②NF709 steel welding