Alloy Name:
JC 851
General Alloy Description:
An aluminum-tin alloy used primarily for its high compressive and fatigue strengths combined with good lubricity.
Covered by Specifications:
ASTM B108, UNS A08500
Similar to:
ASTM B26
Nominal Chemistry:
Element
Si
Cu
Ni
Sn
Percent
2.5
1.0
0.5
6.3
Available Tempers
-F, -T5, -T6
Mechanical Properties
(typical):
Tensile (ksi):
Yield (ksi)
%Elongation
BHN (500kg):
17.0 -18.0
–
3.0 – 8.0
30 – 60
Typical Applications:
Labyrinth seals, bearings, bearing housings, compressors, connecting rod bearings in diesel engines.
Application Profile:
Nickel Silver, C973 & C976, ASTM B271 & B584.
Application:
Labyrinth seals and bearings for industrial and power turbine
Why centrifugals?
Tight dimensional tolerance laby seals require the uniformity, low residual stress, and defect-free structure of a centrifugal.
The information offered on this page is intended only to stimulate discussions on potential alloys . We can neither vouch for the accuracy nor the completeness of the information contained here-in, nor can we comment on the suitability of this particular alloy for any specific design purpose.