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表1 3种实验用钢筋的主要化学成分 (mass fraction / %)

Table 1 Main components of the three types of steel rebars

Material C Si Mn P S N Cr Ni Mo Cu Fe HRB400 0.25 0.80 1.60 0.045 0.045 - - - - - Bal. 304 stainless steel 0.07 1.00 2.00 0.045 0.015 0.11 17.5-19.5 8.0-10.5 - - Bal. 2304 duplex stainless steel 0.03 1.00 2.00 0.035 0.015 0.05-0.20 22.0-24.0 3.5-5.5 0.10-0.60 0.10-0.60 Bal.