Airíonna fisiceacha na n -ábhar teagmhála a úsáidtear go coitianta

Is iad airíonna fisiceacha an ábhair theagmhála ná taighde ar ábhair theagmhála agus roghnaigh ceann de na hinnéacs feidhmíochta tábhachtach . a airíonna fisiceacha lena n -áirítear dlús, leáphointe, friotaíocht, comhéifeacht teochta, comhéifeacht teirmeach, modúl leaisteach agus cruas, srl. state, namely, physical properties and its electrical contact materials to use and has no direct corresponding relationship between performance and makes physical properties of contact materials is reference indicators, contact materials research often no standard between producers and users Prospective evaluation. Relevant national standards in our country, on the other hand, the physical properties of contact materials only for density, resistivity and hardness proposed specific indicators, its rationality, integrity, amhrasach .