4x8 Stainless Steel Sheet Metal 1/2" X 1/2" , 304 Square, 2" Length, Mill Stock Stainless Steel Flat Bar This 304 stainless steel meets ASTM A276 specifications. Thickness: 1/4 inch; Length: 48 inch; Material Type: 304 General Purpose Stainless Steel; Finish... This 304 stainless steel meets ASTM A276 specifications. Thickness: 1/4 inch Length: 48 inch 304 stainless steel is a general-purpose steel alloy that can be easily welded or formed. Cold Roll Flat Bar Qty of 1 3/8 x 5 x 48 Sliding Door Hardware .co Made up of 8 percent nickel and 18 percent chromium, it has good oxidation resistance when used in temperatures up to 1,600°F. Plain squae ba ion balustes ae 1/2 thick x 44 long. This baluste, and all ou ion balustes, ae constucted with tubula steel