Products Description Materials Aluminum Alloy: 5052 /6061/ 6063 / 2017 / 7075 / etc. Brass Alloy: 3602 / 2604 / H59 / H62 / etc. Stainless Steel Alloy: 303 / 304 / 316 / 412 / etc. Steel Alloy: Carbon Steel / Die Steel / Spring Steel etc. Other Speci