SINT-A51 Sinterbronze graphithaltig (Graphite-Bearing Sintered Bronze)

SINT-A51 is a low-density graphite-bearing tin bronze sintered bearing material per DIN 30910-3. Standard material (preferred grade). Carbon present as free graphite provides superior solid lubrication for emergency running conditions.

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

Element	Content
Cu	Rest (Balance)
Sn	9–11%
C	0.5–2.0%
Other	< 2%

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

Property	Value
Density	6.0–6.5 g/cm³
Porosity	25 ± 2.5%
Radial Crushing Strength K	> 100 N/mm²
Hardness HB	> 20
Thermal Conductivity	20 W/mK

Comparable Standards: MPIF CTG-1001-K14 / ISO 5755 P4021Z. 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-A51

6.0-6.5

>HB20

120

80

Bal.

0.5-2

9-11