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Spark Erosion
This is an area in which Brouwer Metaal Ireland Copper Alloys are increasingly being used. The most commonly required alloys are Brocadur CCZ and Brocadur WK with our Brocadur CCNB also sometimes being utilised.
Brocadur CCZ
Condition |
Solution heat-treated drawn and hardened |
Extruded, solution heat-treaded and hardened |
Cross section |
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<25 mm ø |
25-60 mm ø |
60-130 mm ø |
Hardness (mean) |
HB 10/2,5 |
160 |
150 |
140 |
Tensile Strength |
N/mm2 |
min. 470 |
min. 450 |
min. 400 |
Apparent yielding point |
N/mm2 |
min. 440 |
min. 370 |
min. 270 |
Brocadur WK Tungsten copper
Abbreviation |
WK 20 |
WK 25 |
WK 30 |
W |
CU |
W |
CU |
W |
CU |
80 |
20 |
75 |
25 |
70 |
30 |
Standard analysis (in percent by weight) |
WK 20 |
WK 25 |
WK 30 |
HV |
240 |
HV |
195 |
HV |
175 |
HRB |
99 |
HRB |
90 |
HRB |
87 |
Brocadur CCNB
Condition |
Solution heat-treated |
hardened |
Hardness (mean) |
HB 10/2,5 |
approx. 150 |
220-280 |
Tensile Strength |
N/mm2 |
250-370 |
650-900 |
Apparent yielding point |
N/mm2 |
140-210 |
550-800 |
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created by Iomas Media |
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