Which one of the following alloys is not properly matched with regard to its composition?
|
Alloy |
Composition |
|
(1) Brass |
Copper and zinc |
|
(2) solder |
Lead and Zinc |
|
(3) Gunmetal |
Copper, Tin, and Zinc |
|
(4) Nichrome |
Nickel, Iron, and Chromium |
1
(1)
2
(2)
3
(3)
4
(4)