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Tinned Copper Wire

DULICO offers high-quality tinned copper wire, manufactured from refined copper (Cu ≥ 99.95%) and electroplated with a bright, uniform tin layer. The tin coating enhances oxidation resistance, improves solderability, maintains stable conductivity, and extends the lifespan of the wire in humid, vibrating, or high-temperature environments.

Thanks to these technical advantages, tinned copper wire is widely used in electronics, automation, industrial systems, and environments with high moisture or mechanical vibration.

Technical Features

Oxidation and corrosion resistance: Tin layer protects the copper core.
Stable electrical conductivity: Performs well in high-vibration, humid, or temperature-variable conditions.
Uniform dimensions: Ideal for automated processing (crimping, terminal applications).
Excellent solderability: Tin coating ensures even solder adhesion for PCB and board-level connections.
Flexible structural options: Available in solid or stranded wire configurations.

Certifications & Quality Standards

Management systems: ISO 9001:2015, ISO 14001:2015, QC080000:2017

Environmental and chemical safety: RoHS 2.0, REACH, California Proposition 65

Product certifications (based on wire type): UL 1007, UL 1015, UL 1571, UL 1589

Machinery and Equipment

DULICO supports product quality with modern machinery imported from Japan, Germany, Italy, and China. Quality control is conducted rigorously throughout production: IQC, LINE QC, OQC, and 100% OQC before warehousing.

Equipment List

Equipment	Quantity
Wire drawing machines	5
Copper annealing furnaces	2
Tin-plating machines	5
Wire braiding machines	3
Wire coiling & insulation units	2
QC Testing Equipment
Micrometers	20
Resistance meters	5
Elongation testers	1
Surface defect scanners	1
Precision scales	10

Hệ thống máy móc sản xuất dây đồng mạ thiếc — *Machinery and Equipment*

Applications of Tinned Copper Wire

Thanks to its superior properties, tinned copper wire is used across various sectors:

Applications of Tinned Copper Wire

Precision electronics: PCBs, signal wiring, sensors, instrumentation — **Precision electronics:** PCBs, signal wiring, sensors, instrumentation

Aerospace – Medical – High-end devices: Requiring high cleanliness and long-term reliability — **Aerospace – Medical – High-end devices:** Requiring high cleanliness and long-term reliability

Automotive – Robotics – Industrial automation: Power circuits, control signals, flexible harnesses — **Automotive – Robotics – Industrial automation:** Power circuits, control signals, flexible harnesses

Harsh environments: Humidity and corrosion-resistant transmission systems — **Harsh environments:** Humidity and corrosion-resistant transmission systems

Production Process

The manufacturing of tinned copper wire is strictly controlled from raw material selection through to finished product quality assurance.

Technical Specifications

DULICO supplies tinned copper wire in a wide range of diameters and technical configurations:

Conductivity: ~100% IACS
Outer diameter (OD): 0.05 mm – 2.6 mm
OD tolerance: ±0.003–0.026 mm
Resistivity: 3.249 Ω/km (2.6 mm) to 8.786 Ω/km (0.05 mm)
Elongation: 5% (ultrafine wires) to 25% (larger gauges)

Detailed datasheets or technical consultation:

Technical Specification Table – Solid Copper Wire

OD (mm)	Tolerance (±mm)	OD Range (mm)	Conductivity (@20°C %IACS)	Resistance (@20°C Ω/km)	Min. Elongation BC (%)	Min. Elongation TC (%)
0.05	0,003	0,047–0,053	100	8786,000	7	5
0.06	0,003	0,057–0,063	100	6101,200	7	5
0.08	0,003	0,077–0,083	100	3432,000	12	10
0.09	0,003	0,087–0,093	100	2711,700	12	10
0.10	0,003	0,097–0,103	100	2196,500	12	10
0.114	0,003	0,111–0,117	100	1690,100	12	10
0.12	0,003	0,117–0,123	100	1520,500	12	12
0.127	0,003	0,124–0,130	100	1361,800	12	12
0.14	0,003	0,137–0,143	100	1120,650	12	12
0.15	0,003	0,147–0,153	100	976,190	15	12
0.155	0,003	0,152–0,158	100	914,220	15	12
0.16	0,003	0,157–0,163	100	858,000	15	12
0.175	0,003	0,172–0,178	100	717,210	15	15
0.18	0,003	0,177–0,183	100	677,920	15	15
0.19	0,003	0,187–0,193	100	608,450	15	15
0.2	0,003	0,197–0,203	100	549,120	15	15
0.203	0,003	0,200–0,206	100	533,000	15	15
0.226	0,003	0,223–0,229	100	430,050	15	15
0.23	0,003	0,227–0,233	100	415,220	15	15
0.24	0,003	0,237–0,243	100	381,330	15	15
0.245	0,003	0,242–0,248	100	365,920	15	15
0.247	0,003	0,244–0,250	100	360,030	15	15
0.25	0,003	0,247–0,253	100	351,430	15	15
0.254	0,003	0,251–0,257	100	340,450	15	15
0.26	0,003	0,257–0,263	100	324,920	20	15
0.29	0,003	0,287–0,293	100	261,180	20	15
0.32	0,003	0,317–0,323	100	214,500	20	15
0.361	0,004	0,357–0,365	100	168,540	20	15
0.404	0,004	0,400–0,408	100	134,570	20	15
0.455	0,005	0,450–0,460	100	110,920	20	15
0.511	0,005	0,506–0,516	100	84,120	20	20
0.574	0,005	0,568–0,580	100	66,860	25	20
0.635	0,005	0,630–0,640	100	54,470	25	20
0.643	0,006	0,637–0,649	100	52,950	25	20
0.717	0,006	0,717–0,731	100	41,903	25	20
0.813	0,007	0,805–0,821	100	33,231	25	20
0.912	0,009	0,903–0,921	100	26,408	25	20
1.02	0,01	1,01–1,03	100	21,110	25	20
1.15	0,012	1,138–1,162	100	16,609	25	20
1.29	0,013	1,277–1,303	100	13,200	25	20
1.63	0,016	1,614–1,646	100	8,267	25	20
2.05	0,021	2,029–2,071	100	5,226	25	20
2.6	0,026	2,574–2,626	100	3,249	25	20

Technical Specification Table – Tinned Copper Wire

Nominal OD (mm	OD Tolerance (±mm)	OD Range (mm)	Outer Diameter (mm)	Outer OD Tolerance (±mm)	Conductivity (@20°C %IACS)	Electrical Resistance (@20°C Ω/km)	Lay Direction	Lay Length (mm)	Min. Elongation BC	Min. Elongation TC
7/0.0787	0.003	0.0757-0.0817	0.24	0.03	100	506.6	S	2.5 – 4.5	12	10
7/0.08	0.003	0.077-0.083	0.24	0.03	100	190.3	S	2.5 – 4.5	12	10
7/0.10	0.003	0.097-0.103	0.3	0.03	100	313.8	S	7 – 9	15	10
7/0.120	0.003	0.117-0.123	0.37	0.03	100	217.95	S	8 – 10	15	12
7/0.127	0.003	0.124-0.130	388	0.05	100	194.54	S	7 – 9	15	12
7/0.153	0.003	0.150-0.156	467	0.05	100	134.1	S	8 – 10	15	12
7/0.156	0.003	0.153-0.159	476	0.05	100	128.95	S	11 – 13	15	12
7/0.158	0.003	0.155-0.161	482	0.05	100	125.7	S	14 – 16	15	12
7/0.160	0.003	0.157-0.163	488	0.05	100	122.57	S	14 – 16	18	15
7/0.175	0.003	0.172-0.178	534	0.05	100	102.5	S	13 – 15	18	15
7/0.193	0.003	0.190-0.196	589	0.05	100	84.25	S	12 – 14	18	15
7/0.195	0.003	0.192-0.198	595	0.05	100	82.55	S	14 – 16	18	15
8/0.176	0.003	0.173-0.179	575	0.05	100	88.63	S	40 – 45	18	15
11/0.08	0.003	0.077-0.083	306	0.03	100	312.09	S	7 – 9	12	10
11/0.10	0.003	0.097-0.103	383	0.03	100	199.7	S	7 – 9	15	12
11/0.160	0.003	0.157-0.163	612	0.05	100	78.02	S	12 – 16	18	15
12/0.176	0.003	0.173-0.179	704	0.05	100	59.1	S	16 – 18	18	15
15/0.10	0.003	0.097-0.103	447	0.05	100	146.5	S	7 – 9	15	12
16/0.08	0.003	0.077-0.083	0.37	0.03	100	214.51	S	4 – 7	12	10
16/0.175	0.003	0.172-0.178	808	0.05	100	44.82	S	18 – 20	18	15
16/0.18	0.003	0.177-0.183	0.83	0.05	100	42.38	S	19 – 21	18	15
16/0.20	0.003	0.197-0.203	924	0.05	100	34.32	S	22 – 25	18	15
16/0.193	0.003	0.190-0.196	0.9	0.05	100	36.86	S	28 – 32	18	15
17/0.160	0.003	0.157-0.163	762	0.05	100	50.48	S	20 – 22	18	15
19/0.054	0.003	0.051-0.057	0.27	0.03	100	396.5	S	6 – 7	12	8
19/0.08	0.003	0.077-0.083	403	0.03	100	180.65	S	3.7 – 4.7	12	10
20/0.175	0.003	0.172-0.178	904	0.05	100	35.86	S	24 – 26	18	15
20/0.176	0.003	0.173-0.179	909	0.05	100	35.46	S	25 – 26	18	15
21/0.10	0.003	0.097-0.103	0.53	0.05	100	104.6	S	11 – 13	15	10
21/0.160	0.003	0.157-0.163	846	0.05	100	40.87	S	20 – 25	18	15
24/0.194	0.003	0.191-0.197	1.097	0.05	100	24.32	S	30 – 33	18	15
25/0.160	0.003	0.157-0.163	924	0.05	100	34.33	S	25 – 29	18	15
26/0.08	0.003	0.077-0.083	471	0.03	100	132.03	S	2.5 – 3.5	12	8
27/0.175	0.003	0.172-0.178	01.05	0.05	100	26.57	S	21 – 23	18	15
30/0.08	0.003	0.077-0.083	506	0.05	100	114.42	S	4.5 – 7.5	12	8
30/0.10	0.003	0.097-0.103	632	0.05	100	73.25	S	7 – 9	15	12
30/0.175	0.003	0.172-0.178	1.107	0.05	100	23.91	S	21 – 23	18	15
30/0.176	0.003	0.173-0.179	1.113	0.05	100	23.64	S	22 – 25	18	15
30/0.240	0.003	0.237-0.243	1.518	0.05	100	12.71	S	28 – 32	18	15
30/0.243	0.003	0.240-0.246	1.537	0.05	100	12.4	S	48 – 56	18	15
30/0.247	0.003	0.243-0.250	1.562	0.05	100	12	S	35 – 40	18	15
32/0.198	0.003	0.195-0.201	1.293	0.05	100	17.51	S	30 – 33	18	15
37/0.05	0.003	0.047-0.053	351	0.03	100	237.5	S	4 – 6	12	8
37/0.057	0.003	0.054-0.06	0.4	0.03	100	182.75	S	6.5 – 7.5	12	8
37/0.08	0.003	0.077-0.083	421	0.03	100	92.8	S	7 – 9	12	8
41/0.08	0.003	0.077-0.083	591	0.05	100	83.72	S	5 – 6	12	10
41/0.150	0.003	0.147-0.153	1.109	0.05	100	23.81	S	40 – 48	15	12
41/0.160	0.003	0.157-0.163	1.18	0.05	100	20.93	S	32 – 34	18	15
50/0.240	0.003	0.237-0.243	1.95	0.05	100	7.63	S	39 – 42	18	15
50/0.243	0.003	0.240-0.246	1.984	0.05	100	7.44	S	61 – 71	18	15
50/0.247	0.003	0.243-0.250	2.017	0.05	100	7.202	S	40 – 45	18	15
65/0.08	0.003	0.077-0.083	745	0.05	100	52.82	S	12.5 – 15.5	13	10
65/0.150	0.003	0.147-0.153	1.4	0.05	100	15.02	S	60 – 62	20	17

Download: profile-copper-wire.pdf

Frequently Asked Questions (FAQ)

Where can tinned copper wire be used?

Tinned copper wire is suitable for use in control circuits, jumper wires, signal transmission, crimped terminal connections, sensors, and automated control systems.

Can I place custom orders?

Absolutely. We can accommodate specific requirements in terms of diameter (AWG/mm), hardness, wire structure, tin coating, spool length, and packaging specifications.

What is the difference between tinned copper wire and bare copper wire?

Tinned copper wire features a protective tin coating that enhances corrosion resistance and durability in humid or industrial environments. In contrast, bare copper wire is more prone to tarnishing and may lose contact stability over time.

To receive a quotation and detailed consultation on products and technical specifications, please contact:

Mr. Doan Thanh Tung (David)
International Sales
📞+84 975 441 115
✉️ tung.doan@dulico.vn

Mr. Nguyen Trong Duy (LEO)
Director
✉️ duy.nguyen@dulico.vn