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0Cr15Ni6MoCuNb不锈钢管机械性能

作者:不锈钢管 来源:www.s32205bxgg.com 点击数: 更新时间:2018年01月11 【字体:

0Cr15Ni6MoCuNb不锈钢管机械性能(Custom 450)耐蚀性0Cr15Ni6MoCuNb钢在盐雾大气条件下,具有良好的耐蚀性,在35℃的5%和20%盐水喷雾试验中呈现出优良的耐锈性和耐点蚀性能。在酸性介质中的耐蚀性优于Cr13型马氏体不锈钢,与0Cr19Ni钢相当(见下表)。表 0Cr15Ni6MoCuNb的耐蚀性                                    钢号                                    48h的腐蚀速率,mm∕a                                                    硬度            HRC                                    20% HNO3            93℃                                    5% H2SO4            24℃                                    50% CH3COOH            沸腾                                                    1Cr13                                    45                                    0.20                                    43.99①                                    6.76①                                                    ﹙AISI 410﹚                                    28                                    1.50②                                    30.93                                    41.33                                                    0Cr15Ni6MoCuNb                                    30                                    0.05                                    0.025                                    0.025                                                    ﹙Custom 450﹚                                    41                                    0.05                                    0.025                                    0.025                                                    0Cr19Ni9            ﹙AISI 304﹚                                    ﹙HRB﹚            80                                                0.025                                                0.025                                                0.025                        注:①第1个48h试验周期,几个或全部试验周期的腐蚀速率。 ②第3个48h试验周期,腐蚀速率增加到5.08mm/a。

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