RWMA

HOSO code

Application and Description

Class 2

HOSOCU^®202 

Chromium Zirconium copper

Better Hardness than HOSOCU®201 but lower electrical conductivity, common used for the spot and seam welding of cold and hot-rolled steel, stainless steel and low conductivity brass and bronze. They are also used as flash welding dies and as electrodes for the welding of galvanized steel and other coated materials.

HOSOCU®203

Chromium copper

Same application as HOSOCU®202, less loading capability.

Class 3

HOSOCU®302 

Cobalt-beryllium copper

Very high hardness use for the high loading spot and seam welding. Such as stainless steel, chrome and monel metal.

HOSOCU®303 

Beryllium-free copper

Class 4

HOSOCU®400

Beryllium copper

For extremely high loading application.