Pa brofion caledwch sydd ar gael ar gyfer rhybedion dall?

Mae profion caledwch cyffredin yn cynnwys: Caledwch Rockwell (HR), Caledwch Rockwell Arwyneb (HR), Caledwch Vickers (HV), Caledwch Micro Vickers (HV), Caledwch Knoop (HK), Caledwch Brinell (HB), caledwch Leeb (HL) (adlamu dull), prawf caledwch ultrasonic (UCI), Caledwch y lan (SHORE).

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