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Annealing Overview

Annealing

At California Fine Wire Co. we provide multiple annealing options that allow us to custom tailor the metallurgy of the wire to a given application. The wire drawing process creates stresses in the wire which lead to a higher strength which may not be desirable for certain applications. During the annealing process, the wire is heated to a temperature that releases the stresses caused during cold working, making the wire more ductile. In addition to releasing stresses, annealing makes the metal very homogenous in structure. We offer reel-to-reel or strand annealing, in which the wire is heat treated as it is fed through the furnace and wound onto another reel, and batch annealing, which is performed on small volumes in a designated furnace. We are able to perform atmosphere annealing with H, N, Ar, and sometimes He.

To prevent any reactions between the surrounding atmosphere and the heated wire, annealing is performed in a pure hydrogen, oxygen, or argon atmosphere, depending on the wire material and the type of annealing being performed. For wire that is especially susceptible to reactions with atmospheric gases during annealing, vacuum annealing can be performed upon request. We can process any volume of wire from small research quantities to bulk production, and package wire onto spools or into cut length as needed, depending on customer preference. For additional information about our custom wire annealing capabilities, see the table below or contact us directly.

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Annealing Specifications

Process
Annealing
Annealing Process
Bright Annealing
Strand
Batch

Atmospheric Gas
Hydrogen
Argon
Oxygen
Annealing Temperature
Up to 2000° F
Wire Shape
Round
Stranded
Duplex
Ribbon
Materials
Aluminum
Copper
Nickel
Nickel Alloys
Resistance Wire Alloys
Thermocouple Alloys
Gold
Silver
Platinum
Platinum Alloys
Glass Sealing Alloys
Bonding Wire
Numerous Additional Options Available
Finish
Bare
Enamel
PTFE
Ceramic
Plated
Wire Diameter
0.0004" to 0.040"
10 microns to 1.0 mm
Other Sizes on Request
Wire Length
Cut Lengths: 0.125" to 72"
No Limit on Spooled Lengths
Flat Wire Width
0.0004" to 0.10"
10 microns to 2.5 mm
Other Sizes on Request
Production Volume
Prototype
Low Volume
High Volume
Typical Lead Time
Quoted on a Job by Job Basis

Additional Information

Industry Focus
Aerospace
Defense
Electronics
Medical
Research & Development
Industry Standards
ISO 9001:2008 Certified
DFARS
REACH
RoHS