BS IEC 60404-1:2000

FOREWORD
1 General
      1.1 Scope and object
      1.2 Normative references
      1.3 Definitions
2 Magnetically soft materials (coercivity <1 kA/m)
      2.1 Class A - Irons
             2.1.1 General
             2.1.2 Physical characteristics
             2.1.3 Main applications
      2.2 Class B - Low carbon mild steels
             2.2.1 Class B.1 - Bulk material
             2.2.2 Class B.2 - Flat material
      2.3 Class C - Silicon steels
             2.3.1 Class C.1 - Bulk material
             2.3.2 Class C.2 - Flat material
      2.4 Class D - Other steels
             2.4.1 Class D.1 - Bulk material
             2.4.2 Class D.2 - Flat material
             2.4.3 Class D.3 - Stainless steels
      2.5 Class E - Nickel-iron alloys
             2.5.1 Class E.1 - Nickel content 72 % to 83 %
             2.5.2 Class E.2 - Nickel content 54 % to 68 %
             2.5.3 Class E.3 - Nickel content 45 % to 50 %
             2.5.4 Class E.4 - Nickel content 35 % to 40 %
             2.5.5 Class E.5 - Nickel content 29 % to 33 %
      2.6 Class F - Iron-cobalt alloys
             2.6.1 Class F.1 - Cobalt content 47 % to 50 %
             2.6.2 Class F.2 - Cobalt content 35 %
             2.6.3 Class F.3 - Cobalt content 23 % to 27 %
      2.7 Class G - Other alloys
             2.7.1 Class G.1 - Aluminium-iron alloys
             2.7.2 Class G.2 - Aluminium-silicon-iron
                                  alloys
      2.8 Class H - Magnetically soft materials made by
                       powder metallurgical techniques
             2.8.1 Class H.1 - Soft ferrites
             2.8.2 Class H.2 - Magnetically soft sintered
                                  materials
             2.8.3 Class H.3 - Powder composites
      2.9 Class I - Amorphous soft magnetic materials
             2.9.1 Class I.1 - Iron-based alloys
             2.9.2 Class I.2 - Cobalt-based alloys
             2.9.3 Class I.3 - Nickel-based alloys
3 Magnetically hard materials (coercivity >1 kA/m)
      3.1 Class Q - Magnetostrictive alloys - Rare earth
                       iron alloys (Class Q.1)
             3.1.1 General
             3.1.2 Physical characteristics
             3.1.3 Main applications
      3.2 Class R - Magnetically hard alloys
             3.2.1 Class R.1 - Alloys of aluminium-nickel-
                                  cobalt-iron-titanium
             3.2.2 Class R.3 - Iron-cobalt-vanadium-
                                  chromium alloys
             3.2.3 Class R.5 - Rare earth cobalt (RE-Co)
                                  alloys
             3.2.4 Class R.6 - Chromium-iron-cobalt alloys
             3.2.5 Class R.7 - Rare earth iron boron
                                  alloys
      3.3 Class S - Magnetically hard ceramics - Hard
                       ferrites (Class S.1)
             3.3.1 General
             3.3.2 Physical characteristics
             3.3.3 Main applications
      3.4 Class T - Other magnetically hard materials -
                       Martensitic steels (Class T.1)
             3.4.1 General
             3.4.2 Physical characteristics
             3.4.3 Main applications
      3.5 Class U - Bonded magnetically hard materials
             3.5.1 Class U.1 - Bonded aluminium-nickel-
                                  cobalt-iron-titanium magnets
             3.5.2 Class U.2 - Bonded rare earth cobalt
                                  magnets
             3.5.3 Class U.3 - Bonded neodymium-iron-boron
                                  magnets
             3.5.4 Class U.4 - Bonded hard ferrites
Table 1 - Ranges of chemical composition
Table 2 - Ranges of specified values for magnetic properties
Table 3 - Ranges of typical values of magnetic and mechanical
          properties
Table 4 - Ranges of specified values of maximum specific
          total loss
Table 5 - Ranges of specified values for magnetic and
          electric properties
Table 6 - Ranges of specified values of maximum specific
          total loss
Table 7 - Ranges of specified values of maximum specific
          total loss
Table 8 - Ranges of typical values of maximum specific loss
Table 9 - Specified values of maximum specific total loss
Table 10 - Typical values of mechanical and magnetic
           properties for the thickness of 0,50 mm
Table 11 - Typical values of magnetic properties
Table 12 - Typical ranges of magnetic and mechanical
           properties
Table 13 - Typical ranges of mechanical properties
Table 14 - Ranges of specified values of mechanical and
           magnetic characteristics of hot-rolled products
Table 15 - Ranges of specified values of mechanical and
           magnetic characteristics of cold-rolled products
Table 16 - Ranges of chemical composition
Table 17 - Typical magnetic properties of materials in the
           fully processed state
Table 18 - Specified magnetic properties of material with a
           round hysteresis loop
Table 19 - Typical magnetic properties of material with a
           flat hysteresis loop
Table 20 - Typical magnetic properties of material with a
           rectangular hysteresis loop
Table 21 - Typical magnetic properties of material with a
           round hysteresis loop
Table 22 - Typical magnetic properties of material with a
           flat hysteresis loop
Table 23 - Specified magnetic properties of material with a
           round hysteresis loop
Table 24 - Typical magnetic properties of material with a
           flat hysteresis loop
Table 25 - Typical magnetic properties of material with a
           rectangular hysteresis loop
Table 26 - Specified magnetic properties of material in the
           fully processed state
Table 27 - Typical magnetic properties
Table 28 - Ranges of specified magnetic properties of
           material with a round hysteresis loop
Table 29 - Typical magnetic properties of material with a
           rectangular hysteresis loop
Table 30 - Specified magnetic properties
Table 31 - Specified magnetic properties
Table 32 - Typical properties for Mn-Zn ferrites
Table 33 - Typical properties for Ni-Zn ferrites
Table 34 - Ranges of specified properties
Table 35 - Typical physical and magnetic properties
Table 36 - Typical physical and magnetic properties
Table 37 - Typical physical and magnetic properties
Table 38 - Typical physical properties
Table 39 - Ranges of specified magnetic properties
Table 40 - Specified values of magnetic properties
Table 41 - Ranges of specified magnetic properties and
           density of sintered material
Table 42 - Ranges of specified magnetic properties
Table 43 - Ranges of specified magnetic properties and
           density for anisotropic RE-FeB alloys
Table 44 - Ranges of specified values of magnetic properties
Table 45 - Typical magnetic properties
Table 46 - Specified values of magnetic properties
Table 47 - Specified values of magnetic properties
Table 48 - Ranges of typical physical and magnetic properties
Table 49 - Ranges of specified magnetic properties

Intended to classify commercially available magnetic materials. (The term 'magnetic materials' defines substances whose application requires the existence of ferromagnetic or ferrimagnetic properties.) The classification of magnetic materials, for the purpose of this standard, is based upon the generally recognized existence of two main groups of products: soft magnetic materials (coercivity 1 000 A/m). Within the groups, the classification recognizes the following characteristics: the main alloying element and metallurgical state and physical properties of the material, and when possible and convenient, the relationship between these characteristics is identified.

Intended to classify commercially available magnetic materials. The term \'magnetic materials\' denotes substances where the application requires the existence of ferromagnetic or ferrimagnetic properties. The classification of magnetic materials is based upon the generally recognized existence of two main groups of products. - soft magnetic materials (coercivity less than or equal to 1000 A/m) - hard magnetic materials (coercivity greater than 1000 A/m) Within these main groups, the classification when appropriate recognizes the following characteristics: - the main allowing element and the metallurgical state and physical properties of the material; - when possible and convenient, the relationship between these characteristics is identified. A classification by specific areas of application cannot be applied to all materials because different materials can very often be used for the same application depending on the characteristics required.