Guide To Hardness Testing Of Strips Spring Steel Strips Thickness 0.9mm & above Thickness 0.9 to 0.60 Thickness 0.6 to 0.40 Thickness 0.4 to 0.3 Thickness 0.3 to 0.25 Thickness 0.24 to 0.10 Oil tempered scale less EN-42J/C-80/C-98 Blue tempered C-98 HV 100 C Scale HV-60 30 N HC-30 30 N HV-10 15 N HV-5 HV-2 Cold Rolled Annealed EN-8/EN-9/EN-45 HV-60 B Scale HV-30 30 T HV-15 15 T HV-15 15 T HV-5 HV-1 Hard Rolled EN-8/EN-9/EN-45 HV-100 C Scale HV-60 30-N HV-30 30-N HV-10 15-N HV-5 HV-2   Instructions B Scale : Use the A.B.C Standard Rockwell Hardness Tester with a 100 kg load, 1/6* steel ball penetrator and teh steel anvil. 30N Scale : Use the Superficial Rockwell Hardness Tester with a 30 kg load the diamond point N-Brale Penetrator and the steel anvil. C-Scale : Use the A.B.C. Standard Rockwell Hardness Tester with a 150 kg load the diamond point brale penetrator and the steel anvil. 15T Scale : Use the Superficial Rockwell Hardness Tester with a 15 kg load 1/16* steel ball penetrator and the diamond anvil. 30T-Scale : Use the Superficial Rockwell Hardness Tester with a 30 kg load, 1.16 steel ball penetrator and either the diamond or the steel anvil. 15N-Scale : Use the Superficial Rockwell hardness Tester with a 15 kg load the diamond point N-Brale penetrator and the steel anvil. HV -     Use vickers hardness tester 1 kg - 100kg load suffix indication load to be used for testing
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