The added alloy metals improve the mechanical properties compared with the simple brasses or with a similar copper content. The lead improves the workability. Used for the fasteners, the parts of valves, etc.
|
Chemical compound % |
Agent |
Cu |
Al |
Fe |
Mn |
Ni |
Pb |
Si |
Sn |
Zn |
Other |
Mass-volume g/cm3 |
Mini: |
65,0
|
4,0
|
0,5
|
0,5
|
-
|
0,2
|
-
|
- |
Reste |
-
|
8,2 |
Maxi: |
68,0
|
5,0
|
3,0
|
3,0
|
1,0
|
0,8
|
-
|
0,2 |
- |
0,3
|
|
Mechanical properties of bars for general usings (EN 12163) : |
State |
Implementation |
Diameter or size/flats mm |
Tensile strength Rm N/mm˛ min. |
Conventional elastic limit at 0,2Rp0,2 N/mm² |
Stretching |
Hardness |
from |
more than |
until |
A100mm
% min. |
A11,3
% min. |
A
% min. |
HB
min. |
HB
max. |
HV
min. |
HV
max. |
| M
|
|
3
|
-
|
80
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
| R620
|
|
5
|
-
|
40
|
620
|
(360)
|
-
|
10
|
12
|
-
|
-
|
-
|
-
|
| H170 |
|
5 |
- |
40 |
- |
- |
- |
- |
- |
170 |
200 |
180 |
210 |
| R650 |
|
5 |
- |
14 |
650 |
(400) |
- |
8 |
10 |
- |
- |
- |
- |
| H190 |
|
5 |
- |
14 |
- |
- |
- |
- |
- |
190 |
- |
200 |
- |
|
Mechanical properties of bars for die forging (EN 12165) : |
State |
Nominal size of the straight section |
Hardness |
Tensile strength
Rm
N/mm˛
approx. |
Conventional elastic limit at 0,2 %
Rp0,2
N/mm˛
approx. |
Stretching
A%
approx. |
| Diameter
mm |
Size on flat mm |
from |
until and included |
from |
until and included |
HB
min. |
HV
min. |
| M |
All sizes |
|
|
|
|
|
| H130 |
6 |
80 |
6 |
60 |
130 |
135 |
(550) |
(200) |
(8) |
|
