Alloy Steel Sheet/Plate 4130 is normally used for automotive, aerospace, bicycling, construction, and firearm applications. 4130 steel is highly versatile and offers good strength, weldability, impact and abrasion resistance while also being easy to machine. 4130 steel sheet/plate stock is available in full size and custom cut sizes. This material meets the following specifications: AMS 6345 and ASTM A829 (Annealed) | AMS 6350, ASTM A829, and ASTM 505 (chemistry only) (Normalized).