Coated copper roofing material

Claim 2

A highly corrosive resistant roof system which can be easily formed into complex shapes used for the collection of potable water, comprising a copper roofing material coated with a highly corrosive resistant metal alloy material, said metal alloy material having a low lead formulation and includes at least 0.05 weight percent metallic stabilizing agent, said metal alloy material consisting of: ______________________________________ Tin 90.0 - 99.95 Lead 0.001 - 0.1 Bismuth 0.0 - 1.7 Antimony 0.0 - 7.2 Zinc 0.0 - 0.5 Iron 0.0 - 0.1 Copper 0.0 - 2.7 ______________________________________

Claim 3

A coated copper roofing material as in claim 1, wherein said metallic stabilizer is selected from the group consisting of bismuth and antimony.

Claim 4

A coated copper roofing material as in claim 1, wherein said lead is not more than 0.01 weight percent.

Claim 5

A highly corrosive resistant roof system which can be easily formed into complex shapes used for the collection of potable water comprising of a copper roofing material coated with a highly corrosive resistant metal alloy material, said metal alloy having a low lead formulation and includes at least 0.05 weight percent metallic stabilizer, said metallic alloy comprises of the following weight percentages: ______________________________________ Tin 90.0 - 99.95 Lead 0.001 - 0.1 Bismuth 0.0 - 1.7 Antimony 0.0 - 7.2 Zinc 0.0 - 0.5 Iron 0.0 - 0.1 Copper 0.0 - 2.7. ______________________________________

Claim 6

A highly corrosive resistant roof system which can be easily formed into complex shapes used for the collection of potable water comprising of a copper roofing material coated with a highly corrosive resistant metal alloy material, said metal alloy having a low lead formulation and includes at least 0.05 weight percent metallic stabilizer, said metallic alloy comprises of the following weight percentages: ______________________________________ Tin 90.0 - 99.95 Lead 0.001 - 0.1 Bismuth 0.0 - 1.7 Antimony 0.0 - 7.2 Zinc 0.0 - 0.5 Iron 0.0 - 0.1 Copper 0.0 - 2.7. ______________________________________

Claim 7

A coated copper roofing material as in claim 4, wherein said metal coating consisting essentially of the following weight percentages: ______________________________________ Bismuth ≦1.7% Antimony ≦0.5% Zinc ≦0.001% Lead ≦0.02% Tin Balance. ______________________________________

Claim 8

A coated copper roofing material as in claim 4, wherein said metal coating consisting essentially of the following weight percentages: ______________________________________ Bismuth ≦0.5% Antimony ≦0.75% Zinc ≦0.5% Lead ≦0.05% Iron ≦0.01% Tin Balance. ______________________________________

Claim 9

A coated copper roofing material as in claim 4, wherein said metal coating consisting essentially of the following weight percentages: ______________________________________ Antimony ≦7.2% Copper ≦2.7% Tin Balance. ______________________________________

Claim 10

A coated copper roofing material as in claim 4, wherein said metal coating consisting essentially of the following weight percentages: ______________________________________ Antimony ≦2.5% Copper ≦2.0% Zinc ≦0.5% Tin Balance. ______________________________________

Claim 11

A coated copper roofing material as in claim 4, wherein said metal coating consisting essentially of the following weight percentages: ______________________________________ Bismuth ≦0.5% Antimony ≦0.75% Zinc ≦0.5% Tin Balance. ______________________________________

Claim 12

A coated copper roofing material as in claim 4, wherein said metal coating consisting essentially of the following weight percentages: ______________________________________ Bismuth ≦0.5% Antimony ≦1.0% Iron ≦0.1% Tin Balance. ______________________________________

Claim 13

A coated copper roofing material as in claim 4, wherein said metal coating consisting essentially of the following weight percentages: ______________________________________ Bismuth ≦0.5% Iron ≦0.1% Tin Balance. ______________________________________

Claim 14

In a metal roof forming system comprising preformed pans of copper sheet metal abutted together and bent over one another at their edges to form water-proof seams, said improvement comprising: a copper sheet coated on both sides with a corrosive resistant metal coating prior to forming said water-proof seams, said metal coating comprising more than 90 weight percent tin, 0.001-0.1 weight percent lead and at least 0.05 weight percentage stabilizing agent.

Claim 15

In a metal roof forming system comprising preformed pans of copper sheet metal abutted together and bent over one another at their edges to form water-proof seams, said improvement comprising: a copper sheet coated on both sides with a corrosive resistant metal coating prior to forming said water-proof seams, said metal coating comprising more than 90 weight percent tin, 0.001-0.1 weight percent lead and at least 0.05 weight percentage stabilizing agent.

Claim 16

A roof forming system as defined in claim 12, wherein said metallic coating (weight percent) comprises: ______________________________________ Tin 90.0 - 99.95% Lead 0.001 - 0.05% Bismuth 0.0 - 1.7% Antimony 0.0 - 7.5% ______________________________________

Claim 17

A roof forming system as defined in claim 13, wherein said metallic coating contains 95.0-99.95 weight percent tin.