Tensile coupon tests of advanced high-strength cold-formed steel alloys at elevated temperatures and after cooling down

An experimental study was conducted on the mechanical properties of cold-formed AHSS at elevated temperatures and after cooling down. For the elevated temperature test, a total number of 88 specimens were cut from cold-formed steel sheets with nominal yield strengths ranging from 340 MPa to 1200 MPa. The tested materials include two AHSS, namely dual-phase steel (DP) and martensitic steel (MS), in addition to high-strength low-alloy steel (HSLA) specimens. Elevated temperature tension tests were performed in steady-state (66 tests) conditions. Tensile specimens were loaded after heating to different elevated temperatures from room temperature to 700 °C in steady-state tests. For the postfire test, two dual-phase (DP) steel sheets and two martensitic (MS) steel sheets with nominal yield strengths ranging from 340 MPa to 1200 MPa and thicknesses of 1.4 mm and 1.0 mm were tested after exposure to temperatures up to 700 °C. More details of the experimental study, including the material properties, and related modeling can be found in three published articles (elevated temperature test: https://doi.org/10.1016/j.jcsr.2020.106299; postfire test: https://doi.org/10.1016/j.tws.2020.107293; related modeling: https://doi.org/10.1016/j.jcsr.2021.107116). The data can be used for the data comparison in similar or related research, and the aforementioned article and this dataset should be properly cited.