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Type Resistivity
(μΩm)
Shore Hardness
Bulk density
(g/cm3)
Flexural strength
(MPa)
Contact pressure drop
(V)
Friction coefficient Rated current density
(g/cm2 )
Allow circumference speed
(m/s)
The main purpose
CA345 0.76 28 2.65 21.9 L L 13 30 A/C blower motor,alternator.accessory motor
CM8100 0.83 28 2.63 29.2 VL L 13 30
CM8130 3.43 30 2.68 26.7 L L 13 30
CM8105 0.70 25 2.63 19.5 VL L 13 30
CM5H 0.51 11 3.65 12.6 VL L 12 30 slip ring
CM802 0.52 20 3.85 34.5 VL L 19 25 12V starter,motorcycle starter
CM836 0.51 22 3.68 44.6 VL L 19 25 12V starter
CM8121
GA
0.76 20 3.45 38.9 VL L 13 30 Automovite starter,A/C Blower motor accessory motor,B/V application
CM835
GA
0.09 7 6.75 79.8 L M 20 25 12V starter,slid contacts,DC motor
CM871 0.43 21.5 3.88 44.7 L L 13 30
CM896 0.11 11.5 5.75 48.6 VL L 20 25
CN880 1.50 26 2.425 26.3 L L 13 30 Heater blower,accessory motor
 
J215 5.00 78* 2.70 / ≤1.6 ≤0.25 15 20 Automotive alternator,A/C blower
J245 0.65 76* 4.60 / ≤0.856 ≤0.25 15 15 12V starter
J240 2.50 86* 3.35 / ≤1.3 ≤0.25 15 35 Starter,slip ring
Notes: 1 contact buck:
Very Hight ≥3.6 V
Hight   2.4V-3.6V
Medium  1.4V-2.3V
Low    0.8V-1.3V
Very Low  ≤0.8V
2 friction coefficient:
Hight  ≥0.20
Medium 0.15-0.20
Low   0.10-0.15
Very Low ≤0.10
3*-Rockwell hardness
 
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