Conventional Rockwell hardness tests Rockwell scales HRN and HRT Rockwell scales HRBm and HR 30 Tm for thin products. June 1980
12 pages
English

Conventional Rockwell hardness tests Rockwell scales HRN and HRT Rockwell scales HRBm and HR 30 Tm for thin products. June 1980

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12 pages
English
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Description

U.D.C.: 620.178.152.42 June 1980 Conventional Rockwell hardness tests EURONORM Rockwell scales HRN and HRT 109-80 Rockwell scales HRBm and HR 30 Tm for thin products SUMMARY 1 SCOPE A 1.1 Conventional test HRBm 2 PRINCIPLE OF THE TEST A 1.2l test HR 30 Tm 3 FIELD OF APPLICATION A 2 FIELD OF APPLICATION A 2.1 Conventional test HRBm 4 SYMBOLS — DEFINITION AND EXPRESSION OF HARDNESS A 2.2l test HR 30 Tm 4.1 Symbols A 3 SYMBOLS — DEFINITION OF 4.2 Definition and expression of hardness HARDNESS 5 ROCKWELL HARDNESS TESTS HRN A 3.1 Symbols AND HRT A 3.2 Definitions of hardness 5.1 Testing machine A 4 CONVENTIONAL TEST HRBm 5.2 Test piece A 4.1 Testing machine 5.3t method A 4.2 Test piece 5.4 Expression of results A 4.3 Test method 5.5 Limitation of the thickness of the layer tested A 4.4 Expression of results 5.6 Corrections to be added to hardness readings A 5 CONVENTIONAL TEST HR 30 Tm for hardness measurements on cylindrical test pieces A 5.1 Testing machine COMMENTS A 5.2 Test piece Annex: Conventional hardness tests HRBm A 5.3 Test method and HR 30 Tm for thin products A 5.4 Expression of results A 1 PRINCIPLE OF THE TEST COMMENTS 1 SCOPE This EURONORM describes the Rockwell hardness tests N The conventional Rockwell hardness tests HRBm and (cone) and Τ (ball) and specifies the procedures for their HR 30 Tm for thin products are defined in the Annex particular application. hereto. 2 PRINCIPLE OF THE TEST 2.1 2.

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