3J60

Other

Chinese precision-alloy designation system: 1J soft magnetic, 2J magnetic (hard magnetic / magnet alloys), 3J elastic alloys, 4J controlled-expansion/soft alloys, 5J bimetals, 6J resistance alloys. 3J60 is an elastic precision alloy (3J series) for high-performance springs and elastic elements.

Chemical Composition (%)

FE-NI-CR	41

Mechanical Properties

Elastic modulus 170-210 GPa; high elastic limit; precipitation-hardened grades HV 350-600

Chinese Standard

GB/T 15018-1994

Applications

Elastic elements, diaphragms, springs, precision mechanisms

Available Forms

Strip, wire, bar, sheet, rod, tube

Uses

Springs, Bourdon tubes, diaphragms, instrument springs

Heat Treatment

Per family: 1J soft magnetic annealed in H2; 2J magnet aged; 3J elastic solution+age; 4J expansion controlled anneal; 6J resistance annealed

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