SINT-A50 Sinterbronze (Sintered Bronze)

SINT-A50 is a low-density tin bronze sintered bearing material per DIN 30910-3. Standard material (preferred grade). High porosity provides maximum oil retention for self-lubricating bearing applications.

Chemical Composition (per DIN 30910-3 (Sintered Metals for Bearings))

Element	Content
Cu	Rest (Balance)
Sn	9–11%
C	< 0.2%
Other	< 2%

Properties (per DIN 30910-3 (Sintered Metals for Bearings))

Property	Value
Density	6.4–6.8 g/cm³
Porosity	25 ± 2.5%
Radial Crushing Strength K	> 120 N/mm²
Hardness HB	> 25
Thermal Conductivity	27 W/mK

Comparable Standards: MPIF CT-100-K17 / ISO 5755 P4011Z. Radial crushing strength K is measured on calibrated bearings Ø 10/16 × 10. Oil content is minimum 90% of open porosity.

Standard

Material Code

Density (g/cm3)

Hardness

Tensile Strength

Compositions (%)

Ultimate (MPa)

Yield (MPa)

Fe

Cu

C

Ni

Mo

Mn

Cr

Sn

DIN 30910-4:2004-05

Sint-A50

6.4-6.8

>HB25

140

100

Bal.

<0.2

9-11