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: |
56,5
|
-
|
0,2
|
0,8
|
-
|
0,8
|
-
|
0,2 |
Reste |
-
|
8,3 |
Maxi: |
58,5
|
0,1
|
1,2
|
1,8
|
0,3
|
1,6
|
-
|
1,0 |
- |
0,3
|
|
|
Mechanical properties of forged parts (EN 12420) : |
State |
Hardness HB min. |
Tensile strength Rm N/mm² min. |
Conventional elastic limit at 0,2Rp0,2 N/mm² min. |
Stretching A % min. |
|
H085
|
85
|
(390)
|
(150)
|
(20)
|
|
Mechanical properties of bars for screw cutting (EN 12164) : |
State |
Nominal size of the straight section |
Tensile strength Rm N/mm˛ min. |
Conventional elastic limit at 0,2Rp0,2 N/mm² |
Stretching |
Hardness
HB
ou HV
approx |
| Diameter
mm |
Size on flat mm |
from |
more than |
until and included |
from |
more than |
until and included |
A100mm
% min. |
A11,3
% min. |
A
% min. |
| M |
2 |
- |
80 |
2 |
- |
60 |
|
|
|
|
|
|
| R460 |
2 |
- |
18 |
2 |
- |
15 |
460 |
(250) |
10 |
12 |
14 |
(130) |
| R450 |
- |
18 |
40 |
- |
15 |
35 |
450 |
(220) |
- |
- |
16 |
(130) |
| R440 |
- |
40 |
80 |
- |
35 |
60 |
440 |
(200) |
- |
- |
18 |
(120) |
| R520 |
2 |
- |
30 |
2 |
- |
25 |
520 |
(290) |
8 |
10 |
12 |
(150) |
| R500 |
- |
30 |
60 |
- |
25 |
50 |
500 |
(250) |
- |
- |
14 |
(140) |
|
Mechanical properties of cored bars for screw cutting (EN 12168) : |
State
|
Nominal thickness of the walls mm.
|
Hardness
|
Tensile strength
|
Conventional elastic limit at 0,2%
|
Stretching
|
HB
|
HV
|
Rm
N/mm² approx.
|
Rp0,2
N/mm² approx.
|
A
% approx.
|
until and included |
more than
|
min.
|
max.
|
min.
|
max.
|
M
|
All
|
Untreated
|
H140
|
10
|
-
|
140
|
190
|
150
|
200
|
(500)
|
(250)
|
(14)
|
H120
|
-
|
10
|
120
|
170
|
130
|
180
|
(440)
|
(200)
|
(18)
|
|
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 |
|
|
|
|
|
|
H100 |
6 |
80 |
6 |
60 |
100 |
105 |
(440) |
(180) |
(10) |
|
Mechanical properties of sections and rectangular bars (EN 12167): |
State |
Sizes |
Tensile strength Rm N/mm² min. |
Conventional elastic limit at 0,2Rp0,2 N/mm² |
Stretching A % |
Hardness |
Section |
Rectangular bars thickness mm |
>
at |
<
or = |
HB
min. |
HV
min |
| M
|
All |
All |
|
|
|
|
|
| R490
|
-
|
-
|
6
|
490
|
(320)
|
(8)
|
-
|
-
|
| H130 |
- |
- |
6 |
- |
- |
- |
130 |
135 |
| R440 |
- |
6 |
60 |
440 |
(200) |
(12) |
- |
- |
| H110 |
- |
6 |
60 |
- |
- |
- |
110 |
115 |
|
