Model 

Resistivity 

Rockwell hardness 

Contact pressure drop 

Coefficient of friction 

Wear value 

Current density 

Linear velocity 

Unit pressure 

Common uses 

μΩ·m

HR10 

v 

≤ 

50h/mm 

(A/cm²) 

(m/s) 

kpa 

GJ102-R

0.115～0.345 

47～99(392) 

0.30～0.70 

0.2

0.4

20

20

17.6～22.5 

Low-voltage DC generators and AC asynchronous motors, etc 

GJ105-R

0.03～0.09 

59～105(392) 

≤0.40 

0.25

0.8

20

20

17.6～22.5 

Conductive contacts, cable equipment, etc 

GC42-R

0.05～0.12 

30～90(392) 

0.18～0.39 

0.2

0.6

20

20

17.6～22.5 

conductive contacts, etc 

GC412-R

0.16～0.26 

50～100(392) 

0.30～0.70 

0.2

0.4

20

20

17.6～22.5 

Trip collector slider 

GJ108-R

0.1～0.3 

47～104(392) 

0.28～0.66 

0.2

0.4

20

20

17.6～22.5 

Low-voltage DC generators and AC asynchronous motors 

GJ164-R

0.045～0.135 

30～92(392) 

0.18～0.42 

0.2

0.7

20

20

17.6～22.5 

Low-voltage DC generators and variable speed motors 

GJ201-R

1.4～5.6 

64～103(588) 

0.83～2.18 

0.25

0.18

15

25

14.7～19.6 

DC generators and DC welding machines below 60 volts, etc 

GH5-R

1.0～4.5 

65～95(588) 

0.72～1.68 

0.22

0.16

15

25

19.6～24.5 

Synchronous motors, collector rings and wind turbines 

GH71-R

0.25～0.75 

70～105(588) 

0.50～1.31 

0.2

0.25

15

25

19.6～24.5 

DC motors below 60 volts 

GJ203-R

4.4～13.2 

30～90(588) 

1.17～2.43 

0.25

0.15

12

20

14.7～19.6 

DC motors below 80 volts, small traction motors and asynchronous motors 

GJ204-R

0.24～0.96 

73～105(588) 

0.61～1.60 

0.2

0.3

15

20

19.6～24.5 

DC motors, automotive starters and synchronous motors below 40 volts 

GJ245-R

0.23～0.68 

67～104(588) 

0.36～0.95 

0.2

0.3

15

25

19.6～24.5 

Car starters 

GJ205-R

2.4～9.6 

43～104(588) 

≤2.00 

0.25

0.5

15

35

14.7～19.6 

DC motors below 60 volts, automotive starter motors, and asynchronous motors 

GJ206-R

2.0～6.0 

65～104(588) 

0.97～2.03 

0.2

0.3

15

25

14.7～19.6 

DC motors below 60 volts, automotive starter motors, and asynchronous motors 

GJ210-R

0.22～0.88 

40～96(588) 

0.61～1.60 

0.25

0.3

15

25

14.7～19.6 

DC motors below 60 volts, automotive starter motors, and asynchronous motors 

GJ213-R

0.22～0.88 

67～104(588) 

0.39～1.02 

0.2

0.4

15

20

19.6～24.5 

Automotive starters and synchronous motors 

GJ215-R

2.0～6.0 

65～105(588) 

0.96～2.24 

0.25

0.14

15

20

20～25 

Automotive starters and synchronous motors 

GJ230-R

0.6～1.8 

70～105(588) 

0.50～1.20 

0.2

0.25

15

35

14.7～19.6 

Automotive starters and synchronous motors 

GJ240-R

1.0～4.0 

66～113(588) 

0.78～1.82 

0.25

0.2

15

35

19.6～24.5 

Automotive starters and synchronous motors 

GJ241-R

1.17～4.03 

60～100(588) 

0.70～1.70 

0.25

0.3

15

35

14.7～19.6 

Automotive starters and synchronous motors 

GJ239-R

1.05～3.15 

47～99(392) 

0.05～1.62 

0.2

0.25

15

35

14.7～19.6 

Car wipers, household appliances, heater motors, motorcycle motors 

GJ412-R

0.35～1.05 

30～93(392) 

0.42～1.24 

0.2

0.3

15

25

19.6～24.5 

Car wipers, household appliances, heater motors, motorcycle motors 

GJ453-R

0.72～2.88 

64～103(588) 

0.60～1.42 

0.2

0.3

15

35

19.6～24.5 

Car wipers, household appliances, heater motors, motorcycle motors