White antimicrobial copper alloy
View Patent ↗Copper based alloys exhibiting a white/silver hue. The alloys contain copper, nickel, zinc, manganese, tin, sulfur, and antimony.
1. A composition comprising:
66-70 wt % copper,
3-6 wt % nickel,
10-14 wt % zinc,
10-16 wt % manganese,
up to 0.25 wt % sulfur,
0.1-1.0 wt % antimony,
about 0.6 wt % iron,
about 0.05 wt % phosphorous,
less than 0.09 wt % lead,
less than 0.05 wt % silicon, and
less than 0.10 wt % carbon.
2. The composition of claim 1 , wherein lead is greater than zero wt %.
3. The composition of claim 1 , wherein silicon is greater than zero wt %.
4. The composition of claim 1 , wherein carbon is greater than zero wt %.
5. The composition of claim 1 , wherein lead is greater than zero wt %, silicon is greater than zero wt %, and carbon is greater than zero wt %.
6. A composition consisting essentially of:
66-70 wt % copper,
3-6 wt % nickel,
10-14 wt % zinc,
10-16 wt % manganese,
up to 0.25 wt % sulfur,
0.1-1.0 wt % antimony,
about 0.6 wt % iron,
about 0.05 wt % phosphorous,
greater than zero and less than 0.09 wt % lead,
greater than zero and less less than 0.05 wt % silicon, and
greater than zero and less less than 0.10 wt % carbon.
7. A composition comprising:
61 wt %-67 wt % copper,
8 wt %-12 wt % nickel,
8 wt %-14 wt % zinc,
10 wt %-16 wt % manganese,
greater than 0 wt % sulfur and less than or equal to 0.25 wt % sulfur,
0.1 wt %-1.0 wt % antimony,
0.2 wt %-1.0 wt % tin,
greater than 0 wt % iron and less than or equal to than 0.6 wt % iron,
greater than 0 wt % aluminum and less than or equal to 0.6 wt % aluminum, and
greater than 0 wt % lead and less than or equal to 0.09 wt % lead.