ASTM B135/B135M, ASME SB135, AMS4554, AMS 4555, FEDERAL WW-T-791,MILITARY MIL-T-46072, SAE J461,SAE J463, UNS C33000 C33000 brass tubing, a yellow brass that is both formable and machinable. C330 is only produced in tube form and is generally suitable for minimal corrosive conditions. The lead content prevents successful welding, but common machine processes include machining, forming, piercing, and punching.