Description

Model No. 900-442 is a newly designed fully automated digital Rockwell hardness tester.

The main features are as follows:

• Test force closed-loop control.
• Automatic tracking and testing — no test error caused by deformation of frame and/or workpiece.
• The Z-Axis moves up and down automatically, automatically applies preliminary test force.
• Selectable conversion charts based upon material per ASTM E140-12b(2019).
• Round part correction factor.
• Large touchscreen LCD display, menu operation, complete functions (data processing, hardness conversion between different hardness scales, etc.).
• Data output via USB flash drive.
• Precision follows guidelines for GB/T 230.2, ISO 6508-2 and ASTM E18.

Application:

• Suitable to determine the Rockwell hardness of ferrous, non-ferrous metals and non-metal materials.
• Quality control for metal heat treatment, material inspection, welding evaluations, production evaluations involving alloys, grade verification for hard plastics, and failure analysis.
• Especially suitable for the precise measurement of flat surfaces as well as for measurement of a curved surface.

Specifications