Cw128c/Cumg0.5 /C18661/ ASTM B250 Copper-Magnesium Cumg Alloy Wire for Catenary and Contact Wire

• Customization: Available
• Type: Bare
• Conductor Type: Cumg05
• Model NO.: CuMg0.5
• Conductor Material: Copper
• Material Shape: Round Wire
• Range of Application: Refractory
• Certification: ISO9001, CCC, RoHS, VDE
• Brand: Mosstee
• Mechanical Statu: Annealed and Hard Drawn
• Typical Diameter Range: 0.03–3.0mm
• Magnesium Content (%): 0.5%
• Transport Package: Plastic Reel Packaging and Carton Vacuum Packaging
• Specification: Customized
• Trademark: MOSSTEE
• Origin: Jiangsu, China
• HS Code: 74081900
• Production Capacity: 500tons/Year
• Package Size: 80.00cm * 30.00cm * 30.00cm
• Package Gross Weight: 50.000kg

Product Description

Product Description

Copper Alloy Wire CuMg05 (C18665) is a medium magnesium-content copper alloy with ~0.5% Mg, designed to deliver a strong balance between conductivity (65-75% IACS) and mechanical strength. With superior tensile and fatigue properties, it is ideal for high-reliability electrical systems exposed to thermal and mechanical stress.

Its excellent stress relaxation resistance makes it a popular choice for automotive terminals, industrial connectors, and electronic spring elements.

 

Key Features

• ~0.5% Mg provides strong mechanical strength

• Conductivity range of 65-75% IACS

• Outstanding fatigue resistance and dimensional stability

• Good formability and spring performance

• RoHS / REACH certified

 

Applications

• All of the applications are found in electrical wire and cable. The combination of high strength, good conductivity, good solderability and resistance to corrosion leads to the following applications.

• Conductor wire
• Connector wire
• Pins
• Telecommunications cable
• Automotive switches and relays
• Contacts
• Terminals
• Catenary cables
• Automobile wire harnesses
• Contact wire for high speed trains
• Automobile cables

 

Quality Assurance

• ISO 9001 certified production

• Consistent chemical composition and mechanical properties

• Comprehensive inspection with documentation available

 

Packaging Options

• Coil or spool with PE wrapping

• Vacuum-sealed anti-corrosion packaging

• Export-standard cartons with private labeling

Detailed Photos

 

Product Parameters

CDA Alloy No.	C10100	C10200	C11000	C15000	C17200	C26000	C51000
Alloy	Certified	OFHC	ETP	Zirconium	Beryllium	Cartridge	Phosphor
Name
Chemical Composition	99.99 Cu (Min.)	99.95 Cu (Min.)	99.90 Cu (Min.)	98.95 Cu	98.1 Cu	70 Cu	94.8 Cu
(%)			.04 O	.15 Zr	1.9 Be	30 Zn	5.0 Sn
							2 P
Density	0.323	0.323	0.323	0.321	0.298	0.308	0.32
(lbs./in.³)
Electrical Conductivity	101	102	100	93	22	28	15
(% IACS @ 68°F )
Resistivity	10.3	10.3	10.3	11.2	46.2	37	69.1
(Ω/circ. mil/ft)
Approximate Melting	1981	1981	1981	1796	1590	1680	1750
Point (°F)
Tensile Strength Hard	55	55	55	64	152	109	110
Temper (kpsi)
Tensile Strength Soft	34	34	34	30	68	52	51
Temper (kpsi)
Yield Strength Hard	50	50	50	62	125	68	85
Temper (kpsi)
Yeild Strength Soft	11	11	12	13	28	21	21
Temper (kpsi)
Elongation Hard Temper	6	6	5	1.5	1	5	5
(%)
Elongation Soft Temper	36	36	36	30	42	30	49
(%)

Material group	Material	EN	UNS
High copper alloys	CuSn0.15	CW117C	C14415
	CuSn0.3		C14425
	CuAg0.10P	CW016A	C11600
	CuNi3SiMg	CW112C	C70250
	CuCr1Zr	CW106C	C18150
	CuFe2P	CW107C	C19400
	CuCrAgFeTiSi		C18080
	CuMg0.1		C15500
	CuMg0.2	CW127C
Bronze	CuSn4	CW450K	C51100
	CuSn5	CW451K	C51000
	CuSn6	CW452K	C51900
	CuSn8	CW453K	C52100
Brass	CuZn15	CW502L	C23000
	CuZn30	CW505L	C26000
	CuZn36	CW507L	C26800 C27000
	CuZn37	CW508L	C27000 C27200 C27400
Nickel silver	CuNi12Zn24	CW403L	C75700
	CuNi18Zn20	CW409L	C76400

Material Group	Material	Diameter	Density	Resistivity	IACS	UTS
		mm	g/cm3	μΩ.cm	%	MPa
Copper	CuHc	0.03-2.40	8.86	1.724	100	240
	CuHc	0.08-2.40	8.82	2.205	78	300
	27% Nickel Plated
	CuOFHC	0.03-2.40	8.86	1.724	100	240
	CuOFHC	0.08-2.40	8.82	2.205	78	300
	27% Nickel Plated
	Green6	0.05-1.20	8.88	1.997	85	380
	Green6	0.08-1.20	8.87	2.67	65	400
	27% Nickel Plated
	Green8	0.06-0.90	8.94	1.898	90	440
	CuP	0.06-1.85	8.93	1.784	96	240
	White Metal	0.08-0.90	8.92	9.892	17	250
	CuNiSi	0.08-0.90	8.87	4.041	42	640
	Brass 80/20	0.08-0.90	8.62	5.301	32	450
	Bronze6	0.06-0.80	8.84	13.77	12	540
Silver	Ag990	0.07-2.00	10.48	1.73	99	230
	Ag935	0.07-0.90	10.15	2	86	350
Nickel	Pure Nickel	0.06-1.50	8.64	7.804	22	410

 

Certifications

Packaging & Shipping

Company Profile

Mosstee specializes in high-performance conductor materials, including silver-plated copper wire, nickel-plated copper wire, copper-clad aluminum, copper-clad steel, and aluminum alloy cables, widely used in power, telecommunications, automotive, and new energy industries.
 

Our Advantages

1. Three Decades of Specialized Expertise
As a pure-play wire & cable manufacturer since 1990, we deliver precisely engineered solutions for industrial, energy, and infrastructure applications.

2. Certified Quality Assurance
All products meet UL, CE, and RoHS standards, with ISO 9001-certified manufacturing ensuring 99.97% defect-free delivery across 50+ countries.

3. Eco-Conscious Production
REACH-compliant materials reduce carbon footprint by 30% vs industry average, with 85% recyclable product designs.
 

After Sales Service

Service Excellence

1. 24/7 Technical Support
Dedicated engineers on-call for urgent troubleshooting, with <3hr response time for critical infrastructure projects.

2. Customization from Blueprint to Delivery
• Prototype development in 10-14 days
• Minimum Order Quantity (MOQ) as low as 50 kgs
• OEM/ODM compliant with NEC, IEC & EN standards

3. Transparent Project Management
Assigned account managers provide weekly progress reports with:

• Test report
• Production line videos
• Customs clearance updates

4. Risk-Free Trial
Test samples in your application for 90 days - we cover return shipping if unsatisfied.