CuZn39Pb3 (CW614N)

 

Screw cutting brass with a high lead content for favouring fractionation of chips, it allows the working at high speed while reducing at the minimum the tools sharpening. Bad cold working, it is used for the mass production works.

 

Chemical compound %

Agent
Cu
Al
As
Fe
Mn
Ni
Pb
Sn
Zn
Other
Mass-volume g/cm3
Mini:

 57,0

-

-

-

-

-

2,5

-

Reste

-

8,4
Maxi:

59,0

0,05

-

0,3

-

0,3

3,5

0,3

-

0,2

 

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.

M

-

-

-

-

H075

 75

(340)

(110)

(20)

H080

80

(360)

(120)

(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

 

 

 

 

 

 

R400

6

-

14

5

-

10

400

(160)

-

12

15

(90)

R380

-

14

40

-

10

35

380

(160)

-

-

18

(90)

R360

-

40

80

-

35

60

360

(150)

-

-

20

(90)

R430

2

-

40

2

-

35

430

(250)

6

8

10

(120)

R500

2

-

14

2

-

10

500

(390)

(4)

6

8

(150)

R550

2

-

6

2

-

5

550

(420)

-

-

-

(150)

 

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
H110
10
-
110
160
120
170
(430)
(250)
(10)
H090
-
10
90
140
100
150
(380)
(160)
(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

 

 

  

 

 

H080

6

80

6

60

80

85

(350)

(140)

(15)

 

Mechanical properties of wires (EN 12166) :
State
Diameter
Tensile strength Rm N/mm˛
Conventional elastic limit at 0,2Rp0,2 N/mm²
Stretching
Hardness HV
from
more than
until
min.
Max.
A100mm % min.
A11,3 % min.
A % min.
min.
max.

M

All sizes

-

-

-

-

-

-

-

-

R450

0,5

-

1,5

450

-

(200)

-

-

-

-

-

R430

-

1,5

4,0

430

-

(200)

6

-

-

-

-

H130

1,5

-

4,0

-

-

-

-

-

-

130

165

R420

-

4,0

8,0

420

-

(200)

-

8

-

-

-

H120

-

4,0

8,0

-

-

-

-

-

-

120

155

R410

-

8,0

14,0

410

-

(200)

-

-

10

-

-

R400

-

14,0

20,0

400

-

(200)

-

-

10

-

-

H110

-

8,0

20,0

-

-

-

-

-

-

110

145

R520

0,5

-

1,5

520

-

(400)

-

-

-

-

-

R510

-

1,5

4,0

510

-

(400)

(4)

-

-

-

-

H155

1,5

-

4,0

-

-

-

-

-

-

155

185

R500

-

4,0

8,0

500

-

(390)

-

6

-

-

-

R490

-

8,0

14,0

490

-

(390)

-

-

8

-

-

H145

-

4,0

14,0

-

-

-

-

-

-

145

175

R570

1,5

-

4,0

570

-

(520)

-

-

-

-

-

H170

1,5

-

4,0

-

-

-

-

-

-

170

-

 

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

 

 

 

 

 

R480

-

-

6

480

(330)

(5)

-

-

H130

-

-

6

-

-

-

130

135

R430

-

6

60

430

(200)

(15)

-

-

H110

-

6

60

-

-

-

110

115