根据TB/T 2375-1993,将牌号级别的Q460的四个规格10mm、14mm、20mm、28mm进行耐腐蚀性能试验,每个规格分两组,每组5个试样,对比试样为Q235规格为16mm,试验时间72h。对比试样的腐蚀率为5.27g/m2h,四种规格的试样腐蚀率并没有很大差异。
According to TB / T 2375-1993, the corrosion resistance test is carried out on four specifications of Q460 with brand number of 10mm, 14mm, 20mm and 28mm. Each specification is divided into two groups, with 5 samples in each group. The comparison sample is Q235, the specification is 16mm, and the test time is 72h. The corrosion rate of the comparison sample is 5.27g/m2h, and there is no significant difference among the four specifications.