Grades
BMS - BROCKHAUS Magnetic steels
BMS was developed in cooperation with Dr. Brockhaus Messtechnik GmbH & Co. KG. As the world market leader in measuring instruments for soft magnetic materials, our sister company contributed valuable expertise to the material development process.
Technical features
Trademark
The result is our BMS steel strip grade featuring specific electromagnetic properties. Wherever special requirements apply to magnetizability and coercive field strength (e.g. signalling systems, electrical relays, pressure control valves, solenoid valves, and electrical circuits), our BMS grade provides a cost-efficient solution. Depending on the component, this can offer significant advantages — for example, eliminating the need for heat treatment. The grades correspond in all essential aspects to DC04+LC in accordance with DIN EN 10139 and DIN EN 10140.
Coercive field strength (A/m) ≤ 100 Hc
BMS 100:
Coercive field strength (A/m) ≤ 90 Hc
BMS 90:
BHS
Mechanical properties
Technical Features
Trademark
Brockhaus Magnetic Steels
BMS 100 and BMS 90
Material No.
1.0389
Material designation
DC04+LC with special magnetic properties
Mechanical Properties
Testing in rolling direction
Chemical Composition
Mass fraction in %, max.:
C: 0.04
P: 0.020
S: 0.012
Mn: 0.28
Si: 0.04
Al: 0.070
Surface
Type MB: bright, metallically clean surface.
Pores, grooves, and scratches are only permissible to such a small extent that the uniform, smooth appearance is not noticeably affected when viewed with the naked eye.
Roughness: Ra max. 1.6 μm
Structure: surface texture resulting from the coarse-grained microstructure permissible.
Other
Grain size: ≤ 3 (according to DIN EN ISO 643 / ASTM E112)
Tolerances: unless otherwise specified, according to DIN EN 10140:2006 (Class A) and DIN EN 10139:2020-06
Delivery condition: GK (cut edge)
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