STANDARD SUPERCON CONDUCTORS

Type
Cu:SC # Filaments General Description/Applications

Multifilament Conductors

56S53
54S43
54S33
42S25
30S18
0.9:1
1.3:1
2:1
3:1
4.5:1
56
54
54
42
30
Multifilament superconductor for general purpose DC magnets. Commonly used for construction of NMR analytical systems.
MR24
MR16
7:1
11:1
24
16
Designed for use in NMR and MRI imaging magnets requiring more stability.

Monofilament Conductors

T48-B
T48B-g
1.5:1
3:1
1
1
Single filament NbTi alloy clad with high conductivitycryogenic grade copper. Current density is well balanced with the size of the NbTi alloy core and the stabilization provided by the copper cladding. Applications include shim coils and liquid Helium level sensors.

Resistive Matrix Switch Wire

SW-18
SW-M
1.5:1
1.5:1
18
1
Designed for use in superconducting switches, particularly use in coils designed to operate in the persistant mode. Highly resistive CuNi (90/10 and 70/30 alloy) matrix conductors.

INSULATION

Comparative Properties of Insulations

Type
Form Thickness Dielectric
Strength
General Characteristics
FORMVAR
(polyvinyl
enamel)
Continuous
formal firm
.012-.025mm
as specifed
80 kV/mm Good flexibility and adhesion. Extremely tough and abrasion resistant. Withstands severe winding and forming. Readily removed with solvents to ease forming of joints.
ISOMID
(polyester-
enamel)
Continuous
formal firm
.012-.025mm 60 kV/mm Moderate temperature rating; high chemical and solvent resistance.
ML
(polyimide
enamel)
Continuous
formal firm
.012-.025mm 85 kV/mm High temperature rating; high chemical and solvent resistance.
KAPTON
(polyimide)

Tape film wrapped spirally around the conductor; may be fused

Variable depending on wrap and tape thickness .012 to .075mm typical

110-175 kV/mm Allows thicker layers for extra toughness and high reliability. Good radiation resistance. May be fused or sealed.

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Standard Supercon ConductorsInsulation
56 Filament Superconductor Wire


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