Enrollment Deadline: 1 June 2025

Participants will use the Rockwell B scale. Testing is conducted in accordance with ASTM E18.

Sample Description: Two ready-to-test steel or brass test blocks with slightly different hardness values. Each block is pre-tested for homogeneity.

Samples ship in August for a total of one shipment.

This test is included on CTS' Scope of Accreditation to ISO/IEC 17043.