Beryllium Copper Series Alloys Chemical Composition

Alloy No

UNS.$DIN

Be

Co

Ni

Co+Ni

Co+Ni+Fe

Pb

Others

Cu

25

C17200

1.80-2.00

-

-

0.20Min

0.60Max

0.02Max

0.05Max

Rem.

M25

C17300

1.80-2.00

-

-

0.20Min

0.60Max

0.20-0.60

0.05Max

Rem.

10

C17500

0.40-0.70

2.40-2.70

-

-

-

-

0.05Max

Rem.

3

C17510

0.20-0.60

-

1.40-2.20

-

-

-

0.05Max

Rem.

CCNB

CuCo1Ni1Be

0.40-0.70

0.80-1.30

0.80-1.30

-

-

-

0.05Max

Rem.

Physical Properties of Beryllium Copper Wire

UNS/CDA/DIN/EN

Temper

Tensile Strength(N/MM2)

Yield Strength(N/MM2)

Elongation(%)

Rockwell Hardness

(B or C)

Electrical Conductivity(%)

C17200/172/CuBe2/BeCu

Hard(1/2)

750-940

620-870

2-15

/

15-19

C17300/173/CuBe2Pb

Hard/Hard(3/4)

890-1070/960-1140

790-1040/890-1110

2-8/1-6

/

15-19/15-19

C17500/175/CuCo2Be

Soft

240-380

70-210

20-60

/

20-30

C17510/1751/CuNi2Be

Hard

440-560680-900/760-970

370-520

2-20

/

20-30

CuCoNiBe/CuCo1Ni1Be

Solution and Ageing

550-760/650-870

10-25/8-25

/

45-60/48-60