Document Center is acquired by Nimonik

Scope

1.1 This practice covers the determination of comparative hardness values by applying the Ultrasonic Contact Impedance Method (UCI Method).

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Significance and Use

The hardness of a material is a defined quantity having many scales and being dependent on the way the test is performed. In order to avoid the creation of a new practice involving a new hardness scale, the UCI method converts into common hardness values, for example, HV, HRC, etc.

The UCI hardness test is a superficial determination, only measuring the hardness condition of the surface contacted. The results generated at a specific location do not represent the part at any other surface location and yield no information about the material at subsurface locations.

The UCI hardness test may be used on large or small components at various locations. It can be used to make hardness measurements on positions difficult to access, such as tooth flanks or roots of gears.

Keywords

portable hardness testing; superficial hardness; ultrasonic contact impedance (UCI); vickers diamond indenter; Hardness tests; Ultrasonic contact impedance method; ICS Number Code 19.100 (Non-destructive testing)

To find similar documents by ASTM Volume:

01.03 (Steel--Plate, Sheet, Strip, Wire; Stainless Steel Bar)

01.05 (Steel--Bars, Forgings, Bearing, Chain, Tool)

To find similar documents by classification:

19.100 (Non-destructive testing Including testing equipment: industrial apparatus for X-ray and gamma radiography, penetrant flaw detectors, etc. Non-destructive testing of welded joints, see 25.160.40 Industrial radiographic films, see 37.040.25 Non-destructive testing of metals, see 77.040.20)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.