ALZEN® 305 is a white bronze alloy (zinc-aluminum-copper) specially developed by voestalpine. Compared to bronze and other alloys, it is characterized by high wear resistance, excellent sliding properties and the versatile application and machining possibilities. Another - certainly convincing - argument are the excellent emergency running properties.

The advantages at a glance

  • Long service life and high wear resistance
  • Price advantages due to low specific weight
  • Very good machinability, high cutting speeds, short machining times
  • Very good sliding and dry-running properties
  • Good embedding properties of pollution particles
  • High thermal conductivity
  • Good damping properties
  • Good wettability with lubricants
  • Low friction value largely avoids "stick slip effect"
  • Stable price (independent of copper and tin market)
  • No lead as an alloying element

Areas of application

Well-known companies from demanding industries ranging from mechanical engineering, the automotive, construction and stone industries to agriculture and forestry rely on ALZEN® from voestalpine. They use ALZEN® for a wide variety of products. The range extends from rods, bushings, tubes, and sheets to plain bearings, sliding elements, spindle nuts, worm gears, sealing rings, roller bearing cages, and hydraulic parts.

Technically convincing

Choose the material according to your requirements profile:

ALZEN® 305 is offered as casting and wrought material. The advantages of the individual types are shown in the following table:

Material  properties 1)
Casting material
ALZEN® 305
Wrought alloy
ALZEN® 305K
Density ρ in kg/dm³
4,6
4,6
Young's modulus ²) E in N/mm²
70.000
62.000
Yield strength ²) min. Rp0,2 in N/mm²
265
225
Tensile strength ²) min. Rm in N/mm²
300305
Elongation at break ²) min. A5 in %
1,58
Offset yield strength ²) min. Rdp0,2 in N/mm²
270240
Compressive strength ²) min. Rdm3,0 in N/mm²
380330
Hardness 4) in HBW10/1000
11590
Max. temperature ³) short term Tmax in °C
120120
Min. temperature Tmin in °C
00
Coefficient of thermal expansion α in 10-6 K-1
2626
Thermal conductivity λ in W m-1K-1
100100
Coefficient of static friction 5) µRH
0,12 - 0,20,12 - 0,2
Coefficient of mixed friction 5) µRH
0,02 - 0,050,02 - 0,05
PV-value 5) in N/mm² * m/s
1,671,67
Recommended sliding speed v in m/s
0,2 - 10,2 - 1
Dynamic surface pressure  pdyn N/mm²
1010
Static surface pressure  pstat N/mm²
3030
Slip direction
whateverwhatever
Size of pores and cavities in Vol.-%
0,50,05
Applications
Bushings, bearing shells, thrust washers etc.
D ≥30 mm
Heavy and thin plates, sliding elements, mechanical components

 

1) All values are reference values, if design limits are needed please contact voestalpine Camtec GmbH.    

²) Average values measured at ambient temperature on casting samples, can vary depending on part size.    

³) Strength properties strongly depend on temperatur.    

4) Maximum value measured at ambient temperature on casting samples, can vary depending on part size.  

5) Acc. to ASTM G77-83 lubricated condition with v=0,5m/s, can vary depending on external lubrication, load, sliding speed and environmental condition.    

6) Values measured on standard samples with wall thickness d = 15 mm, can vary depending on part size.

Best service all the time

We deliver quality! 

From raw material to ready-to-install part - voestalpine Camtec delivers highest quality, fast and reliable, exactly according to your requirements.

ALZEN® raw materialPre-machined partsReady-to-install parts

  • As bars, bushings or sheets

  • Cut to length with machining allowances
  • e.g. with thread
  • According to customer drawing
  • With tightest tolerances  

Plain bearings for linear, radial, thrust, spherical  and combination applications

Linear bearing

Wear plates

Gleitplatte, Weißbronze, white bronze alloy, wear plate

Gleitplatte, Weißbronze, white bronze alloy, wear plate

Gleitplatte, Weißbronze, white bronze alloy, wear plate

Gleitplatte, Weißbronze, white bronze alloy, wear plate

 

Wear strips

Gleitleiste, Weißbronze, ZnAlCu-Legierung, white bronze alloy, wear strip
Gleitleiste, Weißbronze, ZnAlCu-Legierung, white bronze alloy, wear strip

Gleitleiste, Weißbronze, ZnAlCu-Legierung, white bronze alloy, wear strip

Radial bearing

Bushings without flange

Buchse Weißbronze
Buchse ohne Bund, Weißbronze, ZnAlCu-Legierung, white bronze alloy, bushing without flange

Buchse ohne Bund, Weißbronze, ZnAlCu-Legierung, white bronze alloy, bushing without flange

Buchse ohne Bund, Weißbronze, ZnAlCu-Legierung, white bronze alloy, bushing without flange

Bearing shells

Lagerschale, Weißbronze, ZnAlCu-Legierung, white bronze alloy, bearing shell
Lagerschale, Weißbronze, ZnAlCu-Legierung, white bronze alloy, bearing shell

Lagerschale, Weißbronze, ZnAlCu-Legierung, white bronze alloy, bearing shell

Thrust bearing

Thrust washers

Anlaufscheibe, Weißbronze, ZnAlCu-Legierung, white bronze alloy, thrust washer

Anlaufscheibe, Weißbronze, ZnAlCu-Legierung, white bronze alloy, thrust washer

Spherical bearing

Spherical bearing

Gelenklager, Weißbronze, ZnAlCu-Legierung, white bronze alloy, spherical bearing

Gelenklager, Weißbronze, ZnAlCu-Legierung, white bronze alloy, spherical bearing

Machining options

The excellent machinability compared to Cu-based bearing metals is a particular advantage. ALZEN® is very well suited for the following machining operations:

  • Sawing
  • Milling
  • Gear cutting
  • drilling
  • Bright turning
  • Polishing
  • Reaming
  • Pulling in
  • Pressing in and on
  • Shrinking on

Application notes

  • The mating material should be at least 15 HRC harder
  • Grease or oil well during assembly - no special oils or greases are required
  • The installation clearance must be adapted to the operating conditions
  • Can only be used to a limited extent under the influence of chemically aggressive media