Nickel Aluminium Bronze 955

Key Features
  • High Tensile Strength
  • Suitable for marine applications
  • Heat treatment can increase strength
  • Superior Salt-water corrosion resistance
  • Superior wear resistance
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Key Features
  • High Tensile Strength
  • Suitable for marine applications
  • Heat treatment can increase strength
  • Superior Salt-water corrosion resistance
  • Superior wear resistance

Overview

Kormax Alloy 955 is a high strength nickel aluminium bronze conforming to the requirements of UNS alloy C95500. 955 is a heavy duty, dense, high strength alloy with hardness equal to manganese bronze and excellent resistance to seawater corrosion and fatigue.

This alloy has good wearing qualities and is suitable for elevated temperature use. It exhibits good shock and high stress qualities and is excellent bearing material suitable for heavy duty, high shock and high impact applications. The composition of Kormax 955 is strictly controlled as are the casting conditions.

Chemical Composition

ElementSymbolRange %Nominal %
AluminiumAl10.0-11.511.0
IronFe3.0-5.04.0
NickelNi3.0-5.54.3
ManganeseMn3.0 maximum
TinSn0.1 maximum
Leadb0.03 maximum
ZincZn0.5 maximum
CopperCuBalance

Physical Properties

MaterialUnitNickel Aluminium Bronze 955
Tensile Strength MinN/mm2640
Yield Strength MinN/mm2290
Elongation Min%8%
Hardness MinBHN200

Machining Allowances

Kormax 955 Bronze bar has machining allowances added to the sizes quoted. To use 4-1/2” x 2-1/2” hollow bar as an example, this material would measure approximately 4.650” OD x 2.375” ID as supplied (see table below). This allows finished components measuring 4-1/2” OD x 2-1/2” ID to be easily manufactured from 4-1/2” x 2-1/2” hollow bar.
Machining allowances are as follows:

Outside Diameter
Size Range
up to 2-3/4”
3” to 4”
4-1/4” to 6-1/2”
7” to 8”
8-1/2” to 20”
Allowance
+0.072”
+0.110”
+0.150”
+0.190”
+0.125”
Inside Diameter
Size Range
up to 2-3/4”
3” to 4”
4-1/4” to 6-1/2”
7” to 8”
8-1/2” to 18”
Allowance
-0.125”
-0.125”
-0.145”
-0.200”
-0.125”

Comparative Specifications

AS1565 95500, SAE J462, J461, QQ-C-390B Type III, MIL-B-16033 Class 4, SAE J461

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