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Sliding contact materials

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Sliding contacts, being used as brushes and commutators in motors and resistors, are required to have excellent electrical properties as well as superior contact reliability and corrosion and wear resistance. We provide sliding contact materials with excellent spring characteristics, hardness, and other mechanical properties that satisfy the necessary requirements.

TY series and Ag-Pd- and Cu-based alloys

Features

We provide precipitation-hardened types that excel in contact reliability and wear and corrosion resistance, exhibit excellent mechanical properties such as spring characteristics and hardness, and provide high degree of hardness by heat treatment. The TY series offers choices from lines of Au- and Pd-based materials. Ag-Cu-based materials are advantageous in cost and mainly used for commutators.

Physical properties of sliding contact materials (reference)

Melting point (℃) Density (g/cm3) Hardness (HV) Tensile strength (Soft) (MPa) Volume resistivity (μΩ･cm) Application
Soft Hard
TY40 1030 10.5 160 310*1 590 11~12 Brush
TY70 990 10.8 190 400*1 770 24~27 Brush
TY100 1085 11.8 200 370*1 690 30~35 Brush
TY200 960 16.2 200 330*1 540 15~21 Commutator and brush
TY300 950 15.4 200 340*1 650 13~22 Commutator and brush
TY401 870 10.4 150 250*1 600 10 Brush
40Ag-Pd-Cu 1050 10.7 200 420*1 690 15~22 Brush and commutator
30Ag-Pd-Cu 1050 10.5 200 450*1 690 11~22 Brush and commutator
Ag-Pd60 1385 11.4 90 180 370 42 Commutator and brush
Ag-Pd30 1210 10.9 70 160 300 15 Commutator and brush
92.5Ag-Cu 900 10.4 80 160 290 2 Commutator
  • *1Precipitation-hardened product

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