We are familiar with all kinds of material machining: Aluminum:AL6061,AL5052,AL7075,AL2023,etc Stainless Steel: SS201, SS202, SS303, SS304, SS316 etc. Steel: Q235, 20#, 45# etc. Brass:C37700 (HPb59), C38500 (HPb58), C27200 (CuZn37), C28000 (CuZn40) etc. Bronze: C51000, C52100, C54400, etc. Titanium:TA1/TA2/TB1/TC4/TC18,TI GRADE2/GRADE5 etc http://www.tuofamachining.com