Ndi mayeso olimba otani omwe alipo kwa ma rivets akhungu?

Mayeso olimba omwe amapezeka ndi awa: Rockwell Hardness (HR), Surface Rockwell Hardness (HR), Vickers Hardness (HV), Micro Vickers Hardness (HV), Knoop Hardness (HK), Brinell Hardness (HB), Leeb hardness (HL) (rebound njira), ultrasonic hardness test (UCI), Shore hardness (SHORE).

https://www.yukerivet.com/news/pull-rivets-include-aluminium-iron-and-stainless-steel-what-are-semi-stainless-steel-blind-rivets/