What is ToughMet®?

ToughMet® is a range of copper-nickel-silicon alloys with properties that make them the ideal choice for bushings*, thrust washers and slides for demanding applications.

The primary features of this range of alloys are their strength and hardness, resilience, low friction and galling, wear and corrosion resistance. On a practical level this translates into the following benefits which have been enjoyed by equipment suppliers and users in the mining, quarrying and construction industries:

  • Reduced warranty claims.
  • Higher machine availability that results from improved part life and longer lubrication intervals.
  • Improved productivity that also results from the ability of the metal to withstand higher loads.
  • The reduction of bushing deformation, corrosion and uneven wear makes for better reliability – no surprises for users. Conversely the ToughMet® range has a greater resistance to abuse eg lubrication failure.
  • A reduced need for the scarce resources needed carry out repairs and maintenance.

The range consists of 2 basic compositions and 3 tempers in which the alloys are supplied and the designations are:

Grades            ToughMet®2:  Cu-9Ni-6Sn

ToughMet®3:  Cu-15Ni-8Sn

Tempers:        CX – Cast and spinodal hardened.

AT – Wrought and spinodal hardened.

TS – Cold drawn and spinodal hardened.

The temper designation is followed by a number which indicates the yield strength in 1000psi. eg ToughMet®3 CX105. This is the variant offered from local stock.


*Bushings are also referred to as plain, journal or sleeve bearings.


Got any questions, contact one of our sales staff

Multi Alloys specialises in the supply of high performance metal alloys in various forms. Our focus is on supplying heat and corrosion resistant metal alloys for demanding applications coupled with specialist service and advice.