| Grade : | CuZn31Si1 |
| Number: | CW708R |
| Classification: | Complex copper-zinc alloy |
| Density | 8.4 g/cm ³ |
| Standard: | EN 12163: 1998 Copper and copper alloys. Rod for general purposes EN 12449: 1999 Copper and copper alloys. Seamless, round tubes for general purposes |
| Equivalent grades: | Go here |
Chemical composition % of grade CuZn31Si1 ( CW708R )
| Fe | Si | Ni | Cu | Pb | Others | - |
| max 0.4 | 0.7 - 1.3 | max 0.5 | 66 - 70 | max 0.8 | total 0.5 | Zn - remainder |
Mechanical properties of grade CuZn31Si1 ( CW708R )
| Rm - Tensile strength (MPa) (R460) | 460 |
| Rm - Tensile strength (MPa) (R530) | 530 |
| Rp0.2 0.2% proof strength (MPa) (R460) | 250 |
| Rp0.2 0.2% proof strength (MPa) (R530) | 330 |
| A - Min. elongation at fracture (%) (R460) | 22 |
| A - Min. elongation at fracture (%) (R530) | 12 |
| Brinell hardness (HB): (H115) | 115 - 145 |
| Brinell hardness (HB): (H140) | 140 |
Equivalent grades of grade CuZn31Si1 ( CW708R )
Warning! Only for reference
| EU EN |
Germany DIN,WNr |
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| CuZn31Si1 |
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Casting process
| GS | Sand casting |
| GM | Permanent mould casting |
| GZ | Centrifugal casting |
| GC | Continuous casting |
| GP | Pressure die casting |
Material conditions
| R | Material condition designated by the minimum value of tensile strength requirement for the product with mandatory tensile strength and elongation requirements |
| H | Material condition designated by the minimum value of hardness requirement for the product with mandatory hardness requirements |
Mechanical properties
| ReH | Minimum yield strength / Mindestwert der oberen Streckgrenze / Limite d elasticite minimale |
| Rm | Tensile strength / Zugfestigkeit / Resistance a la traction |
| A | Minimum elongation / Mindestwert der Bruchdehnung / Allongement minimal |
| J | Notch impact test / Kerbschlagbiegeversuch / Essai de flexion par choc |
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CuZn31Si1 ( CW708R ) Complex copper-zinc alloy |
