Enrollment Deadline: 1 March 2025

Participants will use the Rockwell C scale in May and the Rockwell B scale in August, as this test is designed for laboratories that wish to test both scales once per year. ASTM E18 is referenced.

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

Samples ship in May and August for a total of two shipments.

Additional Information: Laboratories preferring to test Rockwell B and Rockwell C scales two times per year should enroll in CTS Test 1302 or Test 1303.

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