Material:AISI304,316,420C,440C Size:0.8mm-150mm Grade: G10- ... ,scent bottle sprayer,valve,nail polish,air condition,medical material,automotive fittings.Material Composition % MaterialCSiMnPSNiCrMoAISI3040.07 max1.0 max2.0 max0.045 max0 ... treatment. 420 steel is magnetic and welding is not recommended. Material will not pass the 72 hours salt bath test.316 ...