Buyers who search for CCA wire SJ/T 11223 usually want two answers. Does the wire follow a recognized Chinese electronics industry standard? And can the supplier prove it? This guide covers both. It explains the standard, how copper clad aluminum wire is specified, which wire types you can order, and what to check before you place an order with a Chinese manufacturer.
Junrun is a copper clad aluminum wire manufacturer based in Zhangjiagang, Jiangsu, China. We make bonded, drawn and annealed composite conductors for telecommunications, network cabling, coils and windings, automotive harnesses and new energy projects. The notes below help importers, distributors and procurement teams compare suppliers on facts.
What Is SJ/T 11223 and Why Does It Matter for CCA Wire?
"SJ/T" is the prefix for electronics industry standards in China. SJ/T 11223 is the standard that Chinese makers commonly cite for copper clad aluminum wire, and the edition most often referenced is SJ/T 11223-2000. It gives buyer and seller a shared technical language.
That shared language matters. Without a named standard, "CCA wire" can mean almost anything, from a thin copper layer to a thick one. A standard lets you write clear acceptance criteria into your purchase order.
Why importers ask for it
- Clear inspection criteria for incoming goods
- Easier comparison between supplier quotations
- Fewer disputes over batch quality
- Better records for your own quality file or OEM audit
SJ/T 11223 is a Chinese standard. If your market uses ASTM B566, IEC or another specification, ask your supplier for a written comparison before you order. Do not assume two standards are identical.
What Is Copper Clad Aluminum (CCA) Wire?
CCA wire has an aluminum core with a layer of copper metallurgically bonded around it. The copper is not a coating that wears off. It forms a continuous outer layer that stays bonded through drawing, annealing and stranding.
This structure suits many signal and low-power uses. At high frequency, current travels mainly near the surface of a conductor. That is why the copper layer performs well in coaxial and RF cables. The aluminum core keeps the wire light and helps control material cost.
CCA also has limits. Its conductivity is lower than solid copper, so DC power applications may need a larger wire size. A good supplier will tell you this early, not after the first shipment.
SJ/T 11223 CCA Wire Technical Requirements
Standards for CCA wire normally cover a short list of properties. For CCA wire SJ/T 11223, buyers should confirm the following items with the supplier and fix them in the order:
- Dimensions and tolerance: nominal diameter and allowed deviation
- Copper cladding ratio: the share of copper in the wire cross-section
- Electrical properties: resistivity or conductivity at 20 °C
- Mechanical properties: tensile strength and elongation
- Surface and bonding quality: no cracks, peeling or exposed aluminum
- Packing and take-up: spool type, net weight and labeling
We do not copy clauses from the standard here. Ask for the current datasheet and test method, and compare them with your own drawing or cable design.
CCA Wire Specifications: Diameter Range, Tolerance and Resistivity
Available diameters depend on the product series, cladding ratio and surface treatment. Tolerance depends on diameter. Fine wire for winding or coaxial braid needs tighter control than coarse wire for stranding.
Send us your target diameter and tolerance. We confirm the available range in the quotation, so you do not rely on a generic catalog figure.
Resistivity deserves special attention. Because the core is aluminum, the wire's resistivity is higher than that of pure copper. The cladding ratio sets how much higher. The next section gives typical reference values.
Copper Cladding Ratio and Conductivity of CCA Wire (10%, 15%)
The cladding ratio is the copper share of the wire's cross-section volume. Ratios of 10% and 15% are the most common in the market, and they strongly affect conductivity, weight and price. A higher copper share raises conductivity and weight.
| Property (typical reference) | CCA 10% | CCA 15% | Pure copper |
| Density (g/cm³) | about 3.3 | about 3.6 | about 8.9 |
| Weight vs. copper, same volume | about 37% | about 41% | 100% |
| Conductivity (% IACS) | about 62% | about 64–65% | 100% |
| Typical use | RF, signal, light-duty cable | Network, winding, higher conductivity needs | Power and general conductors |
Values are industry reference figures for planning only. Final values come from the datasheet and test report for your specific order.
How to choose: pick 10% when weight and cost matter most and the circuit is signal-based. Pick 15% when you need lower resistance or easier compliance with a cable's electrical limits. If you are unsure, order samples of both and test them in your own process.
Mechanical Properties: Tensile Strength and Elongation
Tensile strength and elongation decide how the wire behaves in drawing, stranding, braiding and winding. Soft, annealed wire has higher elongation and winds easily. Harder wire holds its shape and resists stretching but bends less freely.
For stronger fine wire, CCAM wire (copper clad aluminum magnesium alloy) is a common choice. The magnesium alloy core raises tensile strength compared with a plain aluminum core. This helps in very fine diameters where breakage costs time on the line.
When you request a quotation, specify:
- Temper or condition (annealed or hard)
- Minimum tensile strength
- Minimum elongation
- Any winding, bending or stranding test your process requires
Available CCA Wire Types: Bare, Tinned, Enameled and CCAM
Junrun supplies several conductor forms built on a copper clad aluminum base. Choose by how the wire will be processed and connected.
- Bare CCA wire: the standard form for coaxial cable, stranding and general conductor use. See our Copper-Clad Aluminum Series.
- CCAM wire: a magnesium alloy core for higher strength in fine sizes. See our Copper-Clad Aluminum Alloy Series.
- Tinned CCA wire: a tin surface for soldering, oxidation resistance and terminal processing. See our Tinned Wire Series.
- Enameled CCA wire: an insulating enamel layer for coils, motors, transformers and inductors.
- Stranded CCA wire and tinned CCA PV/solar ribbon: for flexible conductors and solar module interconnection.
Not every standard covers every variant. For tinned, enameled or alloy products, confirm which standard and test method apply before you finalize the order.
How Junrun Tests CCA Wire to Meet SJ/T 11223
Quality control at Junrun focuses on batch stability, surface appearance and outgoing inspection. For each order, we agree the inspection items with you in advance, so both sides know what "pass" means.
Buyers who need proof against SJ/T 11223 can ask for checks on these items:
- Wire diameter and tolerance
- Copper cladding ratio
- Electrical resistivity
- Tensile strength and elongation
- Surface appearance and bonding condition
Tell us which checks you need. We confirm which can be tested and reported for your product and quantity.
CCA Wire Quality Control: From Bonding to Final Inspection
Stable quality starts with a controlled process. Junrun runs an integrated workflow, from bonding to take-up. Each stage affects the finished wire:
- Bonding and welding: joins the copper layer to the aluminum core. A weak bond causes peeling later.
- Drawing: reduces the wire to target diameter. Even drawing keeps tolerance tight.
- Annealing: sets softness and elongation to match your process.
- Surface treatment: tinning or enameling, when your application needs it.
- Final inspection and take-up: checks appearance and dimensions, then winds the wire on spools for shipment.
A supplier that controls the whole chain can trace a problem back to its source. Ask any supplier you evaluate how they handle this.
Test Reports and Certificates for SJ/T 11223 CCA Wire
Documents prove quality to your customers and auditors. Certificates vary by product and destination market, and we do not list any here that we cannot support. Instead, tell us what your project requires. We confirm in writing what we can provide.
Common document requests include:
- Batch test report with measured values
- Product datasheet with specifications
- Packing list and commercial invoice
- Third-party laboratory testing, which you can arrange for pre-shipment verification
CCA Wire vs. Pure Copper Wire: Weight, Cost and Performance
- Weight: CCA is far lighter than copper at the same volume. This lowers cable weight and shipping load.
- Cost: aluminum costs less than copper and is less exposed to copper price swings. Savings depend on market prices and the cladding ratio.
- Performance: CCA performs well at high frequency. For DC power, it has higher resistance than copper, so wire size may need to increase.
- Processing: tinned CCA improves solderability, but test your soldering process on samples first.
Check local regulations as well. Some markets restrict or regulate CCA in building wire and structured cabling. Confirm the rules for your destination before you quote to your own customers.
Applications of SJ/T 11223 CCA Wire: Coaxial Cable, Network Cable, Winding and Solar
Coaxial and RF cable
CCA is widely used as the center conductor and braid in coaxial cable. High-frequency signals travel on the copper surface, and the lighter core reduces cable weight.
Network and data cable
Data cables, network wires and shielding structures use CCA where weight, cost and stable transmission matter. Confirm that your cable standard allows CCA conductors.
Coils and windings
Enameled CCA suits motors, transformers, inductors and precision wound parts. Light weight and good winding behavior help in compact designs.
Solar, new energy and automotive
Tinned CCA ribbon supports PV module interconnection. CCA also appears in lightweight harness and equipment leads for new energy and automotive projects, where bend resistance and weight reduction count.
CCA Wire vs. CCS Wire: Which Should You Choose?
CCS (copper clad steel) uses a steel core. It is much stronger than CCA, but also heavier and lower in conductivity.
- Choose CCA when you need light weight, better conductivity and easy winding or stranding.
- Choose CCS when tensile strength is the top priority, such as long spans or mechanical load.
- Choose CCAM when you need CCA's light weight with higher strength in fine diameters.
If you are comparing options for a new cable design, send us your electrical and mechanical targets. We help you narrow the choice.
SJ/T 11223 CCA Wire Manufacturer in China: MOQ, Samples and Lead Time
MOQ and lead time depend on diameter, cladding ratio, surface treatment and packing. We quote both in writing after we review your requirements. We do not publish fixed figures because they vary by specification.
Junrun supports sampling for soldering, winding, cabling and terminal validation. Sample testing is the safest way to confirm that a wire fits your line before a full order.
How to choose a CCA wire supplier
- Ask for the exact standard and edition, such as SJ/T 11223-2000
- Request a datasheet and a sample before you commit
- Confirm cladding ratio, tolerance and packing in writing
- Check how the supplier controls bonding, drawing and annealing
- Make sure the supplier answers technical questions clearly
To get an accurate quotation faster, send these details: product type, diameter, cladding ratio, temper, target standard, quantity, packing requirement and destination port.
Frequently Asked Questions About SJ/T 11223 CCA Wire
What is SJ/T 11223?
It is a Chinese electronics industry standard that manufacturers reference for copper clad aluminum wire. Edition SJ/T 11223-2000 is the version commonly cited. Always confirm the edition with your supplier.
Is CCA wire the same as copper wire?
No. CCA has an aluminum core and a copper outer layer. It is lighter and lower in conductivity than solid copper. It suits many signal, winding and cable uses, but not every power application.
Should I choose 10% or 15% copper cladding?
Choose 10% for lighter weight and lower cost in signal uses. Choose 15% when you need lower resistance. Testing samples of both is the most reliable way to decide.
Can CCA wire be soldered?
Tinned CCA wire is designed for soldering and terminal processing. Bare CCA is harder to solder reliably. Test your own soldering process on samples before bulk production.
Does Junrun provide samples?
Yes. We support sample requests for soldering, winding, cabling and terminal validation. Send us your parameters and we will confirm sample details.
What do I need to send for a quotation?
Send the product type, diameter, cladding ratio, temper, target standard, quantity, packing needs and destination port. Drawings or application notes help us match the right specification.
Conclusion
Choosing CCA wire SJ/T 11223 is about more than a standard number. It means agreeing on cladding ratio, tolerance, resistivity and mechanical properties, then verifying them with samples and test reports. A clear specification protects your production line and your customer relationships.
Junrun supplies bare, tinned, enameled and alloy-core copper clad aluminum wire from Jiangsu, China. If you have a drawing, a target diameter or a standard to meet, Contact Us for product details, technical support, samples or a quotation. You can also email sonia@junrun-supercon.com or message us on WhatsApp at +86 198 5123 5350.