Material Specifications: Alloy Steel Medium Carbon Alloy Steel Grade 4130 Alloy Steel Grade 4140 Alloy Steel Grade 4142 Alloy Steel Grade 4340 Alloy Steel Grade 5135 Alloy Steel Grade 8640 Alloy Steel Grade 8740 Carbon Steel Grade 1035 Carbon Steel Grade 1038 Carbon Steel Grade 1043 Carbon Steel Grade 1045 Carbon Steel Grade 1541 Carbon Steel Grade 4037 Other Alloy Aluminum 2024 Aluminum 5052 H32 Aluminum 6061 Aluminum 7075 Nickel Alloy B-2 Nickel Alloy B-3 Nickel Alloy C22 Nickel Alloy C276 Nickel Alloy G-30