Barth Company
 
Brass tubes
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Seamless Brass tubes
 

What is Brass?
Brass is an alloy comprising of copper and zinc with the more common ones containing 5 – 45 % zinc. Those alloys with a high copper and with up to 30 % zinc are also known as Tombak.

Leaded brass contains not only copper and zinc, but also up to 3.5 % lead to improve the machining properties. Also special brasses contain further alloying elements, eg aluminium, iron, manganese, nickel, silicon and tin which predominantly raises the hardness, but also enhances friction properties and corrosion resistance.

We produce seamless brass tubes in a variety of alloys in coils or in straight lengths. These tubes are finished in accordance with
DIN 1755/17660/17671
DIN EN 12449
and also to special customer requirements.

We hold the following alloys in stock:

Designation
Material No (old)
Material No. EN
Characteristics and uses
CuZn 15
2.0240
CW 502 L
Very good cold forming properties, suitable for pressing, stamping, hammering, punching and flared.
Used in the electronic and jewellery indus-tries. Also for finished products, pressure instrumentation, springs and spacers.
CuZn 20
2.0250
CW 503 L
 
CuZn 30
2.0265
CW 505 L
Very good cold forming properties. Musical instruments, flexible hoses and spring components.
CuZn 33
2.0280
CW 506 L
Very good cold forming properties especially for flaring, upsetting, rivets, finished metal goods and deep drawing.
CuZn 30 AS
-
CW 707 R
Special alloy to suppress dezincification
CuZn 36
2.0335
CW 507 L
The standard alloy for deep drawing, spinning, upsetting, thread rolling and bending. Good soldering properties. Rivet tubing, lighting fittings and finished metal goods.
CuZn 37
2.0321
CW 508 L
 
CuZn 36 Pb 1,5
2.0331
-
Good machining properties and cold for-ming
CuZn 37 Pb 0,5
2.0332
CW 604 N
Adequate machining properties and cold forming
CuZn 38 Pb 1,5
2.0371
-
Good machining properties, cold forming and hot working.
Fittings, turned components and precision engineering.
CuZn 28 SN1
2.0470
CW 706 R
Tubes for heat exchangers, condensers and coolers.

Our current standard production sizes are as follows:

Outside diameter
Wall thickness
   
0,10
0,15
0,20
0,25
0,30
0,40
0,50
0,75
1,00
1,50
2,00
2,50
1
X
X
X
X
X
 
 
 
 
 
 
 
2
X
X
X
X
X
X
X
 
 
 
 
 
3
 
X
X
X
X
X
X
X
X
 
 
 
4
 
 
X
X
X
X
X
X
X
 
 
 
5
 
 
X
X
X
X
X
X
X
X
 
 
6
 
 
X
X
X
X
X
X
X
X
X
 
7
 
 
X
X
X
X
X
X
X
X
X
 
8
 
 
 
X
X
X
X
X
X
X
X
  X
9
 
 
 
X
X
X
X
X
X
X
X
  X
10
 
 
 
 
X
X
X
X
X
X
X
  X
11
 
 
 
 
X
X
X
X
X
X
X
  X
12
 
 
 
 
X
X
X
X
X
X
X
  X
13
 
 
 
 
 
X
X
X
X
X
X
  X
14
 
 
 
 
 
X
X
X
X
X
X
  X
15
 
 
 
 
 
 
X
X
X
X
X
  X
16
 
 
 
 
 
 
X
X
X
X
X
  X
17
 
 
 
 
 
 
 
X
X
X
X
  X
18
 
 
 
 
 
 
 
 
X
X
X
  X

We are of-course able to produce in between sizes.