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Brass Bar CZ121

Brass bar CZ121 had lead added to the composition to significantly improve machinability. While free machining brass has excellent hot working abilities, cold working is poor and not recommended. It can, however, be knurled if required. Soldering of free machining brass is excellent and brazing is good but all other welding methods are not advised without consultation with a welding professional.

Typically supplied in round bar, hexagon bar, square bar and flat bar. Typically used for high speed machined components.

To view Brass Bar CZ121 chemical analysis, specification or shapes & sizes please click on the tabs below.

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Round (inch)
1/8
1/32
3/16
7/32
1/4
9/32
5/16
11/32
3/8
7/16
1/2
17/32
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
1 1/16
1 1/8
1 3/16
1 1/4
1 5/16
1 3/8
1 1/2
1 5/8
1 3/4
2
2 1/8
2 1/4
2 3/8
2 1/2
2 5/8
2 3/4
3
3 1/4
3 1/2
3 3/4
4
4 1/4
4 1/2
Round (mm)
4
5
6
7
8
9
10
12
13
14
16
18
20
22
24
25
26
28
30
40
50
60
65
130
155
205
Hex (inch)
0.248
1/4
5/16
0.324
3/8
0.445
7/16
1/2
0.525
9/16
0.6
5/8
11/16
0.71
3/4
13/16
0.82
7/8
0.92
15/16
1
1.01
1 1/16
1.1
1 1/8
1.2
1 1/4
1.3
1 5/16
1 3/8
1.48
1 1/2
1.625
1.67
1 3/4
1.86
2.05
2.2
2 1/2
2 3/4
3
Hex (mm)
5
6
8
10
11
12
13
14
15
16
17
18
19
20
22
24
30
32
36
41
46
50
60
65

This is our standard size range. If you do not see the shape, size or grade you require, please contact us as we will be happy to assist you with reaching your requirements.

Finish and Packaging

Chamfer
Diameter D Key CH End 1 Chamber End 2 point
Length I Length I
> min. max. min. max.
5 10 0,2 1,5 2 7
10 20 0,2 2 3 10
20 30 0,2 3 4 12
Surface
Pickled
Packaging
1000 kg bundles with metal straps and protective material between the straps and the bars.
Identification through
Label
UNSEN NumberSymbolMaterial Standard
C38500CZ121/CW614NCuZn39Pb3EN12164
Nominal Diameter Nominal Diameter Tolerance (mm) Tolerance (mm)
>Class AClass B
>6≤10+0 ; -0,06+0 ; -0,036
>10≤18+0 ; -0,07+0 ; -0,043
>18≤30+0 ; -0,08+0 ; -0,052
>30≤50+0 ; -0,16-
>50≤80+0 ; -0,19-
>80≤150+0 ; -1,20-

Diameter (mm) Diameter (mm) Length Length
>Flats Length - L Standard MFlats Length - tol. ± (mm)
>10≤30350
>30≤803100
>80≤1503200

Size D (mm) Size D (mm) Tolerance (mm)
>
>6≤10+0 ; -0,09
>10≤18+0 ; -0,11
>18≤30+0 ; -0,13
>30≤50+0 ; -0,16
>50≤60+0 ; -0,19
>60≤100+0 ; -1,20

Shape Size D up to Max. deviation (mm) Max. deviation (mm)
on 400mmon L (L>1 m)
Round500,41,0 x L
Round1506,09,0 x L
Hexagonal500,61,5 x L
Hexagonal1006,09,0 x L

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