An experimental investigation was carried out to determine the material properties of advanced high-strength CFS at subzero temperatures following a steady-state test protocol. Specimens were cut from a 1.8 mm thick dual phase (DP) steel sheet and two 1.0 mm thick martensitic (MS) steel sheets. For comparison purposes, specimens cut from a 0.6 mm thick high-strength low-alloy (HSLA) steel sheet (a type of conventional HSS) and a 1.8 mm thick conventional CFS sheet were also investigated. The specimens were tested at various subzero temperatures from ambient down to -60°C at 20°C intervals for each steel. The experiments collected the stress-strain curves and critical material properties, including elastic modulus, yield strength, ultimate strength, and elongations for AHSS, HSLA, and mild steel.

The experiment campaign was designed to investigate the material properties of the advanced high-strength cold-formed steel (AHSS) by tensile coupon tests for its potential as next-generation structural steel. The campaign included 43 coupons cut from 5 AHSS sheets and 1 conventional high-strength steel sheet with nominal yield strengths ranging from 340 MPa to 1200 MPa. The primary output was the engineering stress-strain relationship for each specimen and material properties extracted from the stress-strain relationship. The original stress-strain data is stored in this experiment session. More details of the experimental study, including the material properties, and related modeling can be found in a published article (https://doi.org/10.1016/j.jcsr.2021.106687). 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.

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.