| High cold forgeability and hot workability used for zipper, wires, bendings, plates, etc. |
| EDM Wire, Zipper, Rivet, Machinery and Electric Parts, etc. |
| Alloy No. |
Composition, wt. % |
| KS/JIS |
UNS |
Cu |
Pb |
Fe |
Sn |
Zn |
Others |
| C2700 |
C27000 |
63.0 ~ 67.0 |
0.05 |
0.50 |
– |
Rem. |
– |
| C2720 |
C27200 |
62.0 ~ 64.0 |
0.07 |
0.07 |
– |
Rem. |
– |
| C2800 |
C28000 |
59.0 ~ 63.0 |
16.0 ~ 22.0 |
0.07 |
– |
Rem. |
– |
| Alloy No. |
Standard Number |
Temper |
Diameter (mm) |
Tensile Strength (Mpa) |
Enlongation (%) |
Hardness (HRB) |
| KS/JIS |
UNS |
| C2700 |
C27000 |
KSD5101 |
F |
6 ~ |
295 |
30 |
– |
| O |
6 ~ 75 |
295 |
40 |
– |
| 1/2H |
6 ~ 50 |
355 |
20 |
– |
| H |
6 ~ 20 |
410 |
– |
– |
| C2800 |
C36000 |
KSD5101 |
F |
6 ~ |
315 |
25 |
– |
| O |
6 ~ 75 |
315 |
35 |
– |
| 1/2H |
6 ~ 50 |
315 |
15 |
– |
| H |
6 ~ 20 |
450 |
It is composed of chip shape created after cutting the brass billet with less than 0.75% of tin + iron.
Aluminum, manganese, synthetic products, gun metal cutting chip, abrasive powder and high tin alloy should not be included, and iron, oil and water contents should not exceed 3%.