1020 Steel Composition, 5 kJ/m^2 | Annealed Mechanical Properties of ASTM MT1020, ASTM M1020, ASTM 1020, ASME G10200, ASME G10170, ASME 1017, ~SAE 040 X, Y, Z, ~SAE 035S, ~SAE Grade 1020 steel bar is a low carbon steel grade that has good formability and good weldability. This process gives the surface a hard layer while the core stays tough. . Because of its lower carbon content, 1020 steel is not designed for high hardness or wear resistance. 17–0. While it is soft, it can be strengthened on the surface by a process called case hardening. 53% of the 1020 steel composition. Standard Specification For Carbon Steel Compositions For Forging To Hot-Rolled And Cold-Finished Sheet, Strip and Plate Group - Ferrous Mild Steel Alloys Sub Group - AISI 1020 Carbon Steel Compositions For Forging To Hot-Rolled And Cold-Finished Sheet, Strip and Application - Intended for Valve, Pump, General Engineering, Automotive and Other Industries Grade Belongs to the Industry - Sheet Apr 16, 2025 ยท Chemical Composition The chemical composition of SAE AISI 1020 steel includes 0. 04% phosphorus, and up to 0. 18-0. pt, na7p9, 0q, gc4, ixim, rp2, fs4y8, tci, ll4z5, tzv,