Copper Foil & Strip
Copper Strip For Transformers
Copper strip for transformer windings in alloy C1100, with thickness from 0.2 to 3.0 mm and width from 50 to 1350 mm. Inner diameter is 300, 400 or 500 mm or customised.
- Oxygen free electrolytic copper C1100
- IEC
- BIS
Product Overview
Copper strip for transformer windings in alloy C1100, with thickness from 0.2 to 3.0 mm and width from 50 to 1350 mm. Inner diameter is 300, 400 or 500 mm or customised. Copper content is at least 99%, conductivity at least 99% IACS and tensile strength above 193 MPa. The material is oxygen free electrolytic copper with an oxygen content below 0.02% and a purity of 99.95% or higher, and complies with IEC, BIS and ASTM standards.
Key Benefits
- Conductivity of at least 99% IACS, which is what transformer efficiency depends on
- Oxygen free electrolytic copper with oxygen content below 0.02%
- Compliance with IEC, BIS and ASTM standards
- Thickness 0.2 to 3.0 mm and width to 1350 mm
- Support through manufacturing, assembly, maintenance and repair
Problems It Solves
- Copper of uncertain purity that does not deliver the designed conductivity
- Oxygen content that causes embrittlement during brazing
- Material that will not satisfy an IEC, BIS or ASTM based specification
- Coil dimensions that do not suit the winding machine
Where It Is Used
Applications And Buyers
Application Scenarios
- Winding distribution and power transformers
- Rewinding transformers in maintenance and repair
- Coil production for electrical equipment
- Busbar and connection work requiring high conductivity strip
Who It Is For
- Transformer manufacturers
- Coil winding shops
- Transformer repair and maintenance businesses
- Electrical equipment producers working to IEC or ASTM
Technical Features And Specifications
Technical Features
- Alloy C1100
- Thickness 0.2 to 3.0 mm
- Width 50 to 1350 mm
- Inner diameter 300, 400, 500 mm or customised
- Content not less than 99%, purity 99.95% or higher as oxygen free electrolytic copper
- Conductivity not less than 99% IACS
- Tensile strength above 193 MPa
| Alloy | C1100 |
|---|---|
| Thickness | 0.2 to 3.0 mm |
| Width | 50 to 1350 mm |
| Inner Diameter | 300 / 400 / 500 mm or customised |
| Content | Not less than 99% |
| Purity | 99.95% or higher, oxygen free electrolytic copper |
| Oxygen Content | Below 0.02% |
| Conductivity | Not less than 99% IACS |
| Tensile Strength | Above 193 MPa |
| Standards | IEC, BIS, ASTM |
How It Is Made And Checked
Materials Process And Quality Control
Materials
- Oxygen free electrolytic copper C1100
Certifications Stated By The Manufacturer
- IEC
- BIS
- ASTM
Manufacturing Process
- Rolling
- Slitting
- Annealing
- Coiling
Quality Control
- Specification agreed in writing before production starts
- First article or sample approved against the agreed specification
- Goods inspected and photographed at the factory before loading
- Inspection report sent to you before the container sails
Customisation Options
What Can Be Varied
- Thickness from 0.2 to 3.0 mm
- Width from 50 to 1350 mm
- Coil inner diameter including customised sizes
- Temper and edge condition
- Packaging for the destination and transit
Compared With The Alternatives
| Aluminium foil for transformers | Copper delivers around 99% IACS against 63% for aluminium, so windings are smaller for the same losses, at higher material cost and weight. |
|---|---|
| Standard electrolytic copper | Oxygen free copper avoids the embrittlement that oxygen causes during brazing and high temperature work. |
Use Guide
- State the standard your specification works to, since IEC, BIS and ASTM are all supported
- Confirm coil inner diameter against your winding machine
- Check conductivity and tensile figures on the mill certificate
- Store coils dry to avoid surface oxidation before winding
Questions
Questions Buyers Ask About This Product
What conductivity does the copper strip have?
Not less than 99% IACS, from oxygen free electrolytic copper of 99.95% purity or higher.
Which standards does it comply with?
IEC, BIS and ASTM.
What sizes are available?
Thickness 0.2 to 3.0 mm, width 50 to 1350 mm, inner diameter 300, 400 or 500 mm or customised.
Why does oxygen content matter?
Oxygen below 0.02% avoids embrittlement during brazing and high temperature work on the winding.
Do you support repair work as well as new manufacturing?
Yes, the material is supplied for transformer manufacturing, assembly, maintenance and repair.
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Get A Price For Copper Strip For Transformers
Send the duty figures, the material if it is fixed, and the quantity. We will confirm the specification and quote against it.