viziers Posted July 19, 2012 Posted July 19, 2012 Can anyone tell me how hazardous C360 brass for mill media as it contains Iron? C360 Free Machining Brass Minimum Properties Ultimate Tensile Strength, psi 58,000 Yield Strength, psi 45,000 Elongation 25% Rockwell Hardness B78 Chemistry Copper (Cu) 60 - 63% Zinc (Zn) 35.5% Iron (Fe) 0.35% min Lead (Pb) 2.5 - 3.7% Thanks,vizi
graumann Posted July 19, 2012 Posted July 19, 2012 To quote a supplier 360 Brass Flat, is ideally suited for applications where strength, good corrosion resistance, electrical conductivity, and non-sparking characteristics are important. Used widely for decorative purposes because of its smooth gold-like appearance, 360 Brass Flat is easy to polish to a high luster and is easily machined. Specifications: ASTM B16, C360, C36000, AKA: brass rectangle, brass flat barApplications: fittings, marine hardware, fasteners, instruments, etc. Workability: Easy to Braze, Cut, and Machine. Moderate Forming Mechanical Properties: Half Hard Temper, Rockwell B78, Tensile = 58,000 +/-, Yield = 45,000 +/-
viziers Posted July 19, 2012 Author Posted July 19, 2012 (edited) THAT is great to hear as I really did not want an accident.. I like to be overly cautious.... Hopefully this info will be useful to others who are just starting out.... Thanks,vizi Edited July 19, 2012 by viziers
dagabu Posted July 19, 2012 Posted July 19, 2012 C360 brass is a lead added brass that allows for smooth machining and great polishing features. The iron is nothing and is found naturally in all brass unless it is ultra-refined which is very costly. It is insignificant in this amount for sparking hazards but adds significant strength to the base material. It is also the most common brass rod material. Be careful around chems that attack Copper or Zinc as they will corrode the rod readily. BP will also tarnish this media but will not significantly corrode it. There is no need to clean the tarnish off after using it, the tarnish actually serves to seal the brass from further oxidization. -dag
Swede Posted July 19, 2012 Posted July 19, 2012 Agreed, brass is great stuff for a ball mill. I much prefer it to lead. As mentioned, watch out for any chemical incompatibilities, as Cu is the primary constituent of brass.
viziers Posted July 19, 2012 Author Posted July 19, 2012 C360 brass is a lead added brass that allows for smooth machining and great polishing features. The iron is nothing and is found naturally in all brass unless it is ultra-refined which is very costly. It is insignificant in this amount for sparking hazards but adds significant strength to the base material. It is also the most common brass rod material. Be careful around chems that attack Copper or Zinc as they will corrode the rod readily. BP will also tarnish this media but will not significantly corrode it. There is no need to clean the tarnish off after using it, the tarnish actually serves to seal the brass from further oxidization. -dag I had some 3/8" brass in my HF mill but just did some searching and came across that and wondered if that type of brass is what I used and if so what are the consequences, and now I know thank you all! The only materials ill be milling for a long time are the simple stuff like copper oxide II and the like... I probably won't venture into perchlorate for a bit as i have a lot to learn (hands on making paper cans..... Thanks,vizi Agreed, brass is great stuff for a ball mill. I much prefer it to lead. As mentioned, watch out for any chemical incompatibilities, as Cu is the primary constituent of brass. That is very usefull info and good to remember! Thanks,vizi
Recommended Posts