ISO 6509 / JIS H 3250 Annex A

Maximum depth of erosion：200μｍ

KZ Metal complies with the evaluation (maximum depth of erosion: 200 μm) .

Apply a threading tensile stress to a joint for evaluation that has been machined to add a tapered female pipe thread, by applying a certain torque to a bushing that has been machined to add a male thread. Observe how many hours it takes before cracks occur on the surface in an atmosphere of 14% ammonia. By testing under the same conditions, it is possible to make relative evaluations between the material being evaluated and the comparison material. The photograph below shows an example in which a stainless steel bushing is mounted on the brass material being evaluated.

Compared to C3604, KZ Metal has about the same or better stress corrosion cracking resistance.

The machinability rating of KZ Metal are good and are about the same as for CAC406C.