Platinum physical properties


performance  

Standard grade pure platinum  

Thermoelectric pure platinum  

Primary platinum  

Secondary platinum  

Tertiary platinum  

Grade IV platinum  

purity(%)  

>99.999  

99.999

99.99

99.9

99.5

99

Density 20 ° C (g / cm 3 )  

21.45

21.45

21.4

21.4

21.29

-  

Melting point (°C)  

1769

1769

1769

1768.5

1765.5

-  

0°C resistivity (10 -8 Ω m)  

9.4

9.81

-  

-  

-  

-  

20 ° C resistivity (10 -8 Ω m)  

 

 

10.58

10.6

11.6

14.9

Temperature coefficient of resistance (°C -1 )  

>0.003925  

0.003925

0.00392

0.0039

0.0035

-  

Tensile strength (MPa)  

37~42  

137

42

157

50

52

Hardness (HV)  

400

40

550

42~46  

850

950

Annealing temperature (°C)  

 

500

 

750

 

 

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