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New Copper Alloys: Compositions of New Copper Alloys

Copper Applications in Innovative Technology

March 1998

By Robert Solbach

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New Alloy Compositions
percent maximum, unless shown as a range or minimum.
C17450 C17460 C19710
Element Materion Corporation Materion Corporation Olin Brass
Cu (incl. Ag) Remainder Remainder
Cu Remainder
Fe 0.20 0.20 0.05 - 0.40
Be 0.15 - 0.50 0.15 - 0.50
Ni 0.50 - 1.0 1.0 - 1.4
Ni (incl. Co) 0.10
Al 0.20 0.20
Si 0.20 0.20
Sn 0.25 0.25 0.20
Zr 0.10 - 0.50 0.10 - 0.50
Zn 0.20
Pb 0.05
P 0.07 - 0.15
Mn 0.05
Mg 0.03 - 0.06
Cu + sum
of Named Elements		 99.5 min. 99.5 min. 99.5 min.

C40810 C40850 C40860 C42520
Element Waterbury Rolling Mills -- Tin Brasses
Cu (incl. Ag)
Cu 94.5 - 96.5 94.5 - 96.5 94.0 - 96.0 88.0 - 91.0
Fe 0.08 - 0.12 0.05 - 0.20 0.01 - 0.05 0.05 - 0.20
Be
Ni 0.11 - 0.20 0.05 - 0.20 0.05 - 0.20 0.05 - 0.20
Ni (incl. Co)
Al
Si
Sn 1.8 - 2.2 2.6 - 4.0 1.7 - 2.3 1.5 - 3.0
Zr
Zn Remainder Remainder Remainder Remainder
Pb 0.05 0.05 0.05
P 0.028 - 0.040 0.02 - 0.04 0.02 - 0.04 0.02 - 0.04
Mn
Mg
Cu + sum
of Named Elements		 99.7 min. 99.7 min. 99.7 min. 99.7 min

C19025 C50780 C51080
Element Dowa Mining Waterbury Rolling Mills -- Phos Bronzes
Cu Remainder Remainder Remainder
Sn 0.7 - 1.1 1.7 - 2.3 4.8 - 5.8
Fe 0.05 - 0.20 0.05 - 0.20
Ni 0.8 - 1.2 0.05 - 0.20 0.05 - 0.20
P 0.03 - 0.07 0.020 - 0.10 0.02 - 0.10
Pb 0.05 0.05
Zn 0.30
Cu + Sum of
Named Elements 		99.7 min. 99.5 min. 99.5 min.

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