Proceq Equotip 550 Operating Instructions Manual page 13

3.3.1.2 Sample Preparations
Keep the sample free of vibrations during the test. Light and thin parts
must be specially fastened, see chapter "3.3.1.6 Testing Light Samples".
Ensure that the surface of the work piece is clean, smooth and dry. If re-
quired, use appropriate cleaning agents for cleaning, such as acetone or
isopropanol. Do not use water or any other detergent fluids.
NOTE! Please use the surface roughness comparator plate
provided to estimate the average roughness of the test piece
prior to testing.
Figure 12: Surface Roughness Comparator Plate
© 2016 Proceq SA
3.3.1.3 Standards
Brief descriptions of referenced standards:
DIN 50156 Leeb hardness testing of metallic materials
ASTM A956 Standard test method for Leeb hardness testing of steel
products
ASTM A370 Test methods and definitions for mechanical testing of
steel products
ASTM E140 Standard hardness conversion tables for metals rela-
tionship among Brinell, Vickers, Rockwell, Superficial,
Knoop, Scleroscope and Leeb hardness
ISO 18265 Metallic materials – Conversion of hardness values
ISO 16859 Leeb hardness testing of metallic materials
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