016号试样初始应力过大,变形超出引伸计量程;017松弛率为1.5%,018松弛率为2.2%,019松弛率为3.1%,020松弛率为2.4%。
The initial stress of 016 sample is too large, and the deformation exceeds the extension measurement range; 017 relaxation rate is 1.5%, 018 relaxation rate is 2.2% The relaxation rate of 019 is 3.1%, and the relaxation rate of 020 is 2.4%.