Thermal Class 220 · Aluminum

220-Class Enameled Aluminum Wire

One of the most widely used aluminum magnet wire products in the Jingda range — produced under an IATF 16949-certified aluminum-wire system, with a dual-coat film engineered for refrigerant, heat and mechanical performance on a high-purity annealed aluminum conductor.

View Datasheet

耐热等级: 220
标准: MW 35-A · MW 73-A
Diameter: 0.130 – 5.100 mm
指挥: ≥ 99.7% annealed Al

What Is 220-Class Enameled Aluminum Wire?

220-class enameled aluminum wire is a dual-coat winding wire rated for a thermal class of 220 °C. It combines a high-purity annealed aluminum conductor with a polyester or polyester-imide basecoat and a polyamide-imide topcoat, for motor, appliance, transformer and refrigeration-compressor windings.

220-class enameled aluminum wire in the Jingda workshop

Why two coats

The basecoat carries the thermal and chemical load. The polyamide-imide topcoat takes the abrasion and winding stress. Splitting the two jobs is what lets the film hold up in high-speed winding and in sealed refrigerant systems where a single-coat film would be marginal — on an aluminum conductor annealed for ductile, break-resistant winding behavior.

What you get

Excellent refrigerant resistance for refrigeration compressor windings
Ductile annealed conductor — elongation of at least 15% for reliable high-speed winding
Stable heat resistance with consistent film build, lot after lot — every production lot is tested in Jingda’s CNAS-accredited laboratories
Produced under an IATF 16949-certified aluminum-wire quality system

Talk to an Engineer

Jingda Enameled Aluminum Wire Range

Select on the continuous operating temperature of your winding first, then on the insulation system and whether the termination process needs direct soldering through the enamel.

产品	耐热等级	绝缘	IEC	NEMA	JIS	Direct soldering
Viewing220-Class Enameled Aluminum Wire	220	Polyester-imide + Polyamide-imide	—	MW-35A · MW-73A	EI/AIW	No
200-Class Enameled Aluminum Wire	200	Polyester-imide + Polyamide-imide	—	—	EI/AIW	No
180-Class Enameled Aluminum Wire	180	Polyester + nylon topcoat	IEC 60317-22	MW-76A	PEW N	No
180-Class Solderable Enameled Aluminum Wire	180	聚氨酯	IEC 60317-51	MW-82A	UEW	Yes
155-Class Solderable Enameled Aluminum Wire	155	聚氨酯	IEC 60317-20	MW-79A	UEW	Yes

Copper conductors are available across comparable classes — see 漆包铜线和 copper-clad aluminum wire. For flat and other profiles, see shaped magnet wire.

220-Class Enameled Aluminum Wire Specifications

Parameter	Value
标准	NEMA MW-35A · MW-73A
Jingda type designations	JXMW35A-x · JXMW73A-x \| JIS EI/AIW \| IEC Q(ZY/XY)-*/220
Diameter range	0.130 – 5.100 mm
指挥	High-purity annealed aluminum, ≥ 99.7% Al
Insulation build	Grade 1 (Single) · Grade 2 (Heavy)
Surface	Lubricated; lubricant specification available on request or to customer specification
可焊性	Not designed for direct soldering through the enamel
Certifications & compliance	UL Recognized · RoHS and REACH reports available above

Reference excerpt — Heavy build

Nominal Ø (mm)	Tolerance (mm)	Max overall Ø (mm)	Min breakdown voltage (V)	Max resistance at 20 °C (Ω/m)
0.140	±0.003	0.171	2920	1.9109
0.150	±0.003	0.182	2920	1.6598
0.160	±0.003	0.194	2920	1.4551
0.170	±0.003	0.205	3250	1.2860
0.180	±0.003	0.217	3250	1.1448
0.190	±0.003	0.228	3570	1.0256
0.200	±0.003	0.239	3570	0.9242
0.210	±0.003	0.252	3900	0.8370
0.220	±0.003	0.262	3900	0.7617
0.230	±0.004	0.274	3900	0.7022
0.240	±0.004	0.287	3900	0.6439
0.250	±0.004	0.297	4220	0.5927
0.260	±0.004	0.308	4220	0.5473
0.270	±0.004	0.319	4220	0.5069
0.280	±0.004	0.329	4270	0.4708
0.290	±0.004	0.340	4270	0.4385
0.300	±0.004	0.352	4330	0.4094
0.310	±0.004	0.362	4330	0.3830
0.320	±0.004	0.373	4380	0.3592
0.330	±0.004	0.385	4440	0.3375
0.340	±0.004	0.396	4440	0.3177
0.350	±0.004	0.406	4500	0.2996
0.360	±0.004	0.417	4500	0.2830
0.370	±0.004	0.428	4560	0.2677
0.380	±0.004	0.439	4560	0.2537
0.390	±0.004	0.449	4620	0.2407
0.400	±0.005	0.459	4620	0.2299
0.410	±0.005	0.471	4620	0.2187
0.420	±0.005	0.482	4680	0.2083
0.430	±0.005	0.493	4680	0.1986
0.440	±0.005	0.503	4740	0.1895
0.450	±0.005	0.513	4740	0.1811
0.460	±0.005	0.524	4740	0.1732
0.470	±0.005	0.535	4810	0.1659
0.480	±0.005	0.546	4810	0.1590
0.490	±0.005	0.556	4810	0.1525
0.500	±0.005	0.566	4870	0.1464
0.510	±0.005	0.577	4870	0.1406
0.520	±0.006	0.589	4870	0.1352
0.530	±0.006	0.600	4930	0.1301
0.540	±0.006	0.610	4930	0.1258
0.550	±0.006	0.620	5000	0.1212
0.560	±0.006	0.630	5000	0.1169
0.570	±0.006	0.641	5000	0.1128
0.580	±0.006	0.652	5060	0.1089
0.590	±0.006	0.663	5060	0.1052
0.600	±0.006	0.674	5060	0.1017
0.610	±0.006	0.684	5060	0.0983
0.620	±0.006	0.694	5060	0.0951
0.630	±0.006	0.704	5130	0.0921
0.640	±0.006	0.714	5130	0.0892
0.650	±0.006	0.726	5200	0.0865
0.660	±0.007	0.738	5200	0.0841
0.670	±0.007	0.749	5200	0.0861
0.680	±0.007	0.759	5200	0.0792
0.690	±0.007	0.769	5200	0.0769
0.700	±0.007	0.779	5270	0.0747
0.710	±0.007	0.789	5270	0.0726
0.720	±0.007	0.800	5270	0.0706
0.730	±0.008	0.812	5270	0.0688
0.740	±0.008	0.823	5340	0.0669
0.750	±0.008	0.834	5340	0.0651
0.760	±0.008	0.844	5340	0.0634
0.770	±0.008	0.854	5340	0.0618
0.780	±0.008	0.864	5410	0.0602
0.790	±0.008	0.874	5410	0.0586
0.800	±0.008	0.884	5410	0.0572
0.810	±0.008	0.895	5410	0.0558
0.820	±0.008	0.906	5410	0.0544
0.830	±0.009	0.917	5480	0.0532
0.840	±0.009	0.928	5480	0.0519
0.850	±0.009	0.939	5480	0.0507
0.860	±0.009	0.949	5480	0.0495
0.870	±0.009	0.959	5480	0.0484
0.880	±0.009	0.969	5550	0.0473
0.890	±0.009	0.979	5550	0.0462
0.900	±0.009	0.989	5550	0.0452
0.910	±0.009	1.000	5550	0.0442
0.920	±0.009	1.011	5550	0.0432
0.930	±0.010	1.022	5620	0.0424
0.940	±0.010	1.033	5620	0.0415
0.950	±0.010	1.044	5620	0.0406
0.960	±0.010	1.054	5620	0.0397
0.970	±0.010	1.064	5620	0.0389
0.980	±0.010	1.074	5700	0.0381
0.990	±0.010	1.084	5700	0.0373
1.000	±0.010	1.094	5700	0.0366
1.100	±0.011	1.197	5850	0.0302
1.200	±0.012	1.299	5930	0.0254
1.300	±0.013	1.401	6080	0.02165
1.400	±0.014	1.502	6160	0.01867
1.500	±0.015	1.606	6240	0.01626
1.600	±0.016	1.706	6330	0.01430

Full range 0.140 – 1.600 mm (93 sizes) — scroll to browse. JXMW35A heavy film per NEMA MW 35-A; resistance at 20 °C, tested to IEC 60851. Larger sizes up to 5.100 mm are available — request the complete specification for details.

Cross-section micrograph — 220-class enameled aluminum wire

220-class aluminum wire production line — Tongling Jingxun

Performance and Applications

Heat shock 240 °C / 30 min with no cracks — verified on every production lot. Grade 1 and Grade 2 films, lubricant matched to the winding process.

典型应用

Refrigeration compressors

工业电机

Appliance motors

变形金刚

Quality and Compliance

Every production lot is tested in Jingda’s CNAS-accredited laboratories against the applicable product specification and agreed requirements.

Product Datasheet

Complete dimensional, electrical and thermal tables for every published size and build.

View Datasheet

质量证书

ISO 9001 ISO 14001 ISO 45001 IATF 16949 UL certificate

Substance Compliance

RoHS report REACH report

关于精达

铜陵精达特种电磁线有限公司

We are one of the world’s leading magnet wire manufacturers, based in Tongling City — one of China’s principal copper production bases. Listed on the Shanghai Stock Exchange since 2002 (600577), the group runs a national-level enterprise technology centre, a national-level postdoctoral research station and the Jingda Magnet Wire Research Institute.

Jingda magnet wire is wound into products across new-energy vehicles, photovoltaics, robotics, aerospace, home appliances, specialty motors, 5G communications and electronics.

1990Founded

0Production facilities worldwide

0R&D centers & institutes

0CNAS 认可的实验室

0Annual sales volume (2025)

0Countries served

Ordering, Packaging and Delivery

Commercial term	Detail
Minimum order quantity	600 kg per type and conductor diameter. Sample and pilot-order quantities are agreed case by case.
Lead time	Stock available: dispatch from the next working day. Scheduled production: normally within 30 days, confirmed per order.
Incoterms	FOB by default; other Incoterms on request.
Quotation response	Within 1 business day.

Spool types and pallet configuration — aluminum wire

Single spools for samples or small orders are packed individually in a wooden case or paper drum. Volume shipments use fumigation-free wooden pallets, with cartons or fibreboard collars protecting the spools and stretch film securing the load. Standard aluminum-wire spool families include PT-25, PT-60, PT-200 and PT-270; exact spool weight and pallet build are confirmed per order.

Frequently Asked Questions

When should I specify aluminum magnet wire?

Aluminum magnet wire is selected for weight- and cost-sensitive winding designs that have been qualified for an aluminum conductor. Selection is made against the specific coil design, slot geometry and termination method, and Jingda’s technical team reviews each configuration before quotation.

How do I choose between 220-class and 180-class aluminum wire?

Both are aluminum winding wires. The 220-class (MW-35A / MW-73A) is the dual-coat, high-temperature option for compressor and motor windings. The 180-class (MW-76A) uses a polyester film with a nylon topcoat for less demanding thermal environments. Start from the hot-spot temperature of your winding and the customer specification.

Is this aluminum wire directly solderable?

No. It is not designed for direct soldering through the enamel. For direct-tinning processes, use the 155/180-class solderable aluminum wire (MW-79A / MW-82A), produced to IEC 60317-20 and IEC 60317-51.

Does IATF 16949 cover this product?

Yes. Jingda’s IATF 16949 certification applies to the aluminum-wire scope, which includes this 220-class product family — relevant for automotive and other IATF-governed supply chains.

Can Jingda supply non-standard diameters or insulation builds?

Yes. Metric, AWG and SWG diameters can be produced, and insulation build can be specified from Grade 1 to Grade 3. Special insulation or lubricant requirements are reviewed by the technical team against the application.

Can we become a Jingda distributor or agent?

Yes. Jingda works with distributors and agents across Europe, the Americas, Southeast Asia, the Middle East and Japan, and is open to new partners in markets where coverage can be strengthened. Send your company profile, the market and industries you serve, and the product families you want to carry, and the export team will follow up.

How does Jingda support customers after the order?

Jingda’s technical team supports winding trials, specification alignment and problem analysis during qualification. Documentation including the datasheet, quality certificates and compliance reports is issued with the order, and production lots are traceable to the test records held in Jingda’s CNAS-accredited laboratories.

Request a Quote or Sample

Tell us your specification — a Jingda sales engineer will respond within 1 business day with a quotation or technical feedback.

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Your partner for reliable magnet wire. From new-energy vehicles to home appliances — Jingda wire is wound into what the world relies on every day.

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Email ejingda@jingda.cn Call +86 562 2685302

220-Class Enameled Aluminum Wire