Muaj kev ntsuam xyuas qhov nyuaj li cas rau cov rivet dig muag?

Cov kev ntsuam xyuas qhov nyuaj feem ntau suav nrog: Rockwell Hardness (HR), Surface Rockwell Hardness (HR), Vickers Hardness (HV), Micro Vickers Hardness (HV), Knoop Hardness (HK), Brinell Hardness (HB), Leeb hardness (HL) (rebound method), ultrasonic hardness test (UCI), Shore hardness (SHORE).

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