Magival Technical Details

Over recent years Acciaierie Valbruna has been producing, with tremendous success, a comprehensive range of Stainless Steel and Silicon Ion Bar for Soft Magnetic Application.

"Soft Magnetic Free Machining Stainless Steel"

It is used in magnetic cores and other parts requested to exhibit:

  • High permeability, low coercitive force and low residual magnetism
  • Corrosive resistance and good machinability

Range of profiles: Rounds - Hexagon - Square - Flat
Condition: Un-annealed Cold Drawn or Mill Annealed Bright Ground

VALBRUNA STANDARD CHEMICAL ANALYSIS
    C Si Mn Cr Mo P S N
MG1 ASTM A 838 ALLOY 1 0.03 0.50 0.50 17.50 0.30 0.025 0.30 0.02
MG2 ASTM A 828 ALLOY 2 0.03 1.30 0.50 17.50 0.25 0.025 0.30 0.02
MG3 ASTM A 582 XM 34 0.03 0.80 0.50 18.00 1.60 0.025 0.30 0.02
MG4 ASTM A 838 ALLOY 2 0.02 1.30 0.50 18.00 1.60 0.025 0.30 0.02

 

VALBRUNA J SAT
µ MAX
Br HC* HRB
MG1  ≈ 1.5  ≥ 1000 (≤  ? 16mm)
 ≥ 700 (≥  ? 16mm)
 < 0,8 T
(BR*: < 8000 gauss)
< 240 A/m (< ? 16mm) (HC*: < 3 Oe)
< 320 A/m (≥ ? 16mm) (HC*: < 4 Oe)
75 - 85
MG2  ≈ 1.5
 ≥ 1200 (≤  ? 16mm)
 ≥ 800 (≥  ? 16mm)
 < 0,8 T
(BR*: < 8000 gauss)
< 200 A/m (< ? 16mm) (HC*: < 2,5 Oe)
< 320 A/m (≥ ? 16mm) (HC*: < 4 Oe)
80 - 90
MG3  ≈ 1.5
 ≥ 1000 (≤  ? 16mm)
 ≥ 700 (≥  ? 16mm)
 < 0,8 T
(BR*: < 8000 gauss)
< 240 A/m (< ? 16mm) (HC*: < 3 Oe)
< 320 A/m (≥ ? 16mm) (HC*: < 4 Oe)
80 - 90
MG4  ≈ 1.5
 ≥ 1200 (≤  ? 16mm)
 ≥ 800 (≥  ? 16mm)
 < 0,8 T
(BR*: < 8000 gauss)
 < 200 A/m (< ? 16mm) (HC*: < 2,5 Oe)
< 320 A/m (≥ ? 16mm) (HC*: < 4 Oe)
80 - 90

* From 1 T (104 gauss)

Silicon-Iron Steel is widely used for the production of relays and solenoids.  Its high electrical resistivity and permeability, low coercitivity and residual magnetism are beeter than those of carbon steels.  Valbruna's Silicon Iron is successfully used by the main European manufacturers of electronic fuel injection components.  A careful heat treatment on the finished component guarantees the best magnetic properties. Protective coating to heat-treated parts, by Chromium or Nickel or Cadium plating is strongly suggested to avoid rusting.

Range of profiles: Round
Condition: Mill Annealed and Bright Ground