The reliable, uninterrupted transmission of electrical power is vital to the electric utility industry. Transmission lines carrying large blocks of power must be permanently protected against damage from lightning or the occasional fault. AFL Alumoweld® overhead ground wires, also referred to as shield wires, provide the best means of obtaining this protection. They combine conductivity, corrosion resistance, and high strength--all of the properties necessary for such assurance.
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1 AFLglobal.com 1 (800) 866-7385 © 2003, AFL, all rights reserved.PP-3-00305Revision 4, 04.17.2026 S p e c i c a t i o n s a r e s u b j e c t t o c h a n g e w i t h o u t n o t i c e . Wire Products 1 Applications • Overhead ground wire • Shield wire protecting transmission lines against lightning damage Features Corrosion Resistance Alumoweld overhead ground wire has excellent corrosion resistance. Its strength and conductivity remain unchanged in any atmosphere where aluminum is satisfactory, especially those known to be corrosive from industrial or atmospheric conditions. This assurance against corrosion is obtained through the application of a thick covering of pure aluminum, which provides a substantial barrier of protective metal. The minimum cladding thickness of Alumoweld is 10% of the radius of the wire. The cladding has a continuous, strong metallic bond to the steel core that will not crack or flake. Strength Comparable to Steel Alumoweld also provides strength greater than or comparable to other overhead ground wires. For commonly used wire sizes, the tensile strength of the individual wire can approach 200,000 pounds per square inch. When used in a strand for overhead ground wire, this high strength permits greater span lengths, less sag, and heavier loads under storm loading conditions. Lightweight Directly related to strength and sag performance is the lighter weight of Alumoweld. This lighter weight, combined with high strength, permits Alumoweld to be installed to the same sags as steel with correspondingly lower tensions and lower stresses on the towers or supporting structures. Alumoweld ® Overhead Ground Wire Alumoweld wire and strand are used by power utilities, as well as formed wire and optical ground wire manufacturers. Alumoweld is suitable in corrosive environments, lowering maintenance and replacement costs. continued Number & Size of Wires Nominal Wire Diameter Nominal Strand Diameter Breaking Lod Weight Resistance Cross Section AWG in. mm in. mm lbs kg lbs/1000 ft kg/km Ohms/1000 ft@68ºF Ohms/ km@20ºC sq. in. mm 2 37 No. 6 0.1620 4.115 1.130 28.70 120,200 54,500 2222.00 3307.0 0.05356 0.1757 0.76264 492.20 37 No. 7 0.1443 3.665 1.010 25.70 100,700 45,690 1762.00 2623.0 0.06754 0.2216 0.60509 390.30 37 No. 8 0.1285 3.264 0.899 22.80 84,200 38,190 1398.00 2080.0 0.08516 0.2794 0.47984 309.50 37 No. 9 0.1144 2.906 0.801 20.30 66,770 30,290 1108.00 1649.0 0.10740 0.3523 0.38032 245.50 37 No.10 0.1019 2.588 0.713 18.10 52,950 24,020 879.00 1308.0 0.13540 0.4443 0.30174 194.70 19 No. 5 0.1819 4.620 0.910 23.10 73,350 33,270 1430.00 2129.0 0.08224 0.2698 0.49438 318.70 19 No. 6 0.1620 4.115 0.810 20.60 61,700 27,990 1134.00 1688.0 0.10370 0.3402 0.39163 252.70 19 No. 7 0.1443 3.665 0.721 18.30 51,730 23,460 899.50 1339.0 0.13080 0.4290 0.31073 200.40 Alumoweld Strand ASTM B-416
2 AFLglobal.com 1 (800) 866-7385 © 2003, AFL, all rights reserved.PP-3-00305Revision 4, 04.17.2026 S p e c i c a t i o n s a r e s u b j e c t t o c h a n g e w i t h o u t n o t i c e . Wire Products 2 Premise Cable Alumoweld ® Overhead Ground Wire Contact AFL for your Alumoweld solution. Qualifications Governing Body Standard Code Component ASTM B415 Alumium Clad Steel Wire (ACS wire) Alumoweld Strand ASTM B-416 (cont.) Number & Size of Wires Nominal Wire Diameter Nominal Strand Diameter Breaking Lod Weight Resistance Cross Section AWG in. mm in. mm lbs kg lbs/1000 ft kg/km Ohms/1000 ft@68ºF Ohms/ km@20ºC sq. in. mm 2 19 No. 8 0.1285 3.264 0.642 16.30 43,240 19,610 713.50 1062.0 0.16490 0.5409 0.24641 158.90 19 No. 9 0.1144 2.906 0.572 14.50 34,290 15,550 565.80 842.0 0.20790 0.6821 0.19530 126.10 19 No.10 0.1019 2.588 0.509 12.90 27,190 12,330 448.70 667.7 0.26220 0.8601 0.15495 99.96 7 No. 5 0.1819 4.620 0.546 13.90 27,030 12,260 524.90 781.1 0.22640 0.7426 0.18193 117.40 7 No. 6 0.1620 4.115 0.486 12.40 22,730 10,310 416.30 619.5 0.28030 0.9198 0.14435 93.10 7 No. 7 0.1443 3.665 0.433 11.00 19,060 8,645 330.00 491.1 0.35350 1.1600 0.11448 73.87 7 No. 8 0.1285 3.264 0.385 9.78 15,930 7,226 261.80 389.6 0.44580 1.4630 0.09077 58.56 7 No. 9 0.1144 2.906 0.343 8.71 12,630 5,729 207.60 308.9 0.56210 1.8440 0.07198 46.44 7 No.10 0.1019 2.588 0.306 7.76 10,020 4,545 164.70 245.1 0.70880 2.3250 0.05708 36.83 7 No.11 0.0907 2.304 0.272 6.91 7,945 3,604 130.60 194.4 0.89380 2.9320 0.04527 29.21 7 No.12 0.0808 2.052 0.242 6.16 6,301 2,858 103.60 154.2 1.12700 3.6970 0.03590 23.16 3 No. 5 0.1819 4.620 0.392 9.96 12,230 5,547 224.50 334.1 0.51770 1.6990 0.07796 50.32 3 No. 6 0.1620 4.115 0.349 8.87 10,280 4,663 178.10 265.0 0.65280 2.1420 0.06185 39.90 3 No. 7 0.1443 3.665 0.311 7.90 8,621 3,910 141.20 210.1 0.82320 2.7010 0.04905 31.65 3 No. 8 0.1285 3.264 0.277 7.03 7,206 3,269 112.00 166.7 1.03800 3.4060 0.03890 25.10 3 No. 9 0.1144 2.906 0.247 6.26 5,715 2,592 88.81 132.2 1.30900 4.2940 0.03085 19.90 3 No.10 0.1019 2.588 0.220 5.58 4,532 2,056 70.43 104.8 1.65100 5.4150 0.02446 15.78 Alumoweld Strand ASTM B-415 Number & Size of Wires Nominal Wire Diameter Nominal Strand Diameter Breaking Lod Weight Resistance Cross Section AWG in. mm in. mm lbs kg lbs/1000 ft kg/km Ohms/1000 ft@68ºF Ohms/ km@20ºC sq. in. mm 2 No. 5 0.1819 4.620 165 116.0 4,290 1,946 74.25 110.5 1.541 5.056 0.02599 16.77 No. 6 0.1620 4.115 175 123.0 3,608 1,637 58.88 87.6 1.943 6.375 0.02062 13.30 No. 7 0.1443 3.665 185 130.1 3,025 1,372 46.69 69.5 2.450 8.038 0.01635 10.55 No. 8 0.1285 3.264 195 137.1 2,529 1,147 37.03 55.1 3.089 10.130 0.01297 8.37 No. 9 0.1144 2.906 195 137.1 2,005 909 29.37 43.7 3.896 12.780 0.01028 6.63 No.10 0.1019 2.588 195 137.1 1,590 721 23.29 34.7 4.912 16.120 0.00816 5.26 No.11 0.0907 2.304 195 137.1 1,261 572 18.47 27.5 6.194 20.320 0.00647 4.17 No.12 0.0808 2.052 195 137.1 1,000 454 14.65 21.8 7.811 25.630 0.00513 3.31 Modulus of Elasticity: Strand 23,000,000; Solid Wire 23,500,000. Coefficient of Linear Expansion: 0.000,007,2 per degree F. Modulus of Elasticity: Strand 16,200 kg/mm 2 ; Solid Wire 16,500 kg/mm 2 . Coefficient of Linear Expansion: 0.000,013 per degree C.
Features:
- Superior corrosion resistance compared with traditional galvanized steel ground wires
- Lower in weight than similarly sized traditional galvanized steel products
- Permanent bond between the aluminum coating and steel core for lifetime performance
- More conductive than traditional galvanized steel options
- Equivalent Alumoweld options exist for the most common galvanized cables
- Available in custom drum lengths to suit your plan/profile requirements
- No special installation training or equipment required
Applications:
- Specified by electric utilities for use on transmission lines as ground / shield wires
- Ideal for marine or industrial zones where corrosion is a concern
- Preferred option for transmission lines near coastal mines
Per Industry Standards:
ASTM B-415 Hard-Drawn Aluminum-Clad Steel Wire
ASTM B-416 Concentric-Lay-Stranded Aluminum-Clad Steel Conductors
The reliable, uninterrupted transmission of electrical power is vital to the electric utility industry. Transmission lines carrying large blocks of power must be permanently protected against damage from lightning or the occasional fault. AFL Alumoweld® overhead ground wires, also referred to as shield wires, provide the best means of obtaining this protection. They combine conductivity, corrosion resistance, and high strength--all of the properties necessary for such assurance.
The thick aluminum cladding on each wire offers optimum protection against atmospheric corrosion while providing the conductivity important for proper operation of protective relays. The high conductivity of Alumoweld strand also reduces the temperature rise of the static wire under fault current conditions.
Excellent Conductivity
Due to a thick aluminum cladding, Alumoweld overhead ground wire provides one-third the conductivity of an aluminum conductor of equal size, and several times the conductivity of steel. Each Alumoweld product is tested for resistivity, a practice not generally used for common galvanized or misch metal steel shield wires, thereby ensuring the stated electrical properties of the finished product.
These electrical properties are maintained throughout the life of the line, as contrasted to the properties of inferior galvanized or misch metal steel which can deteriorate over time. Such deterioration further reduces the already low conductivity of common steel overhead ground wires.
Corrosion Resistance
Numerous laboratory and field tests confirm the excellent corrosion resistance of Alumoweld wire. Its strength and conductivity are permanent in any atmosphere where aluminum is satisfactory, especially those known to be corrosive from industrial or atmospheric conditions.
This assurance against corrosion is obtained through the application of a thick covering of pure aluminum which provides a substantial barrier of protective metal. This minimum cladding thickness of Alumoweld is ten percent of the radius of the wire. The cladding has a continuous, strong metallic bond to the steel core and will not crack or flake.
On the other hand, thin protective coatings like those found in aluminized steel can be damaged to the point of steel exposure even by ordinary construction methods, resulting in progressive deterioration of the coating and eventual rusting of the steel.
Laboratory and Field Tests
Laboratory tests on Alumoweld have included salt spray, 100 percent relative humidity, and flue gas tests. In all of these, the wire and strand have performed extremely well. Similar and confirming results have been obtained by field tests conducted since the introduction of Alumoweld over 40 years ago. These field tests encompass all types of exposure including marine, industrial, and rural; and have been evaluated by our own staff and by independent researchers. Sites for field tests include those considered most severe from a corrosion standpoint. Further proof of this corrosion resistance has been provided by the millions of pounds of Alumoweld which have been installed on important lines throughout the world.
Light Weight
Directly related to strength and sag performance is the lighter weight of Alumoweld strand. Due to its thick cladding of aluminum, Alumoweld is 15 percent lighter than a steel strand of equivalent size. This lighter weight, combined with high strength, permits Alumoweld strand to be strung to the same sags as steel with correspondingly lower tensions and lower stresses on the towers or supporting structures.
Sag Data
Alumoweld overhead ground wires may be sagged to provide the proper mechanical safety and lightning protection for any power conductor.
Alumoweld Aluminum Clad Steel ACSR/AW Core Wire,Alumoweld Aluminum-Clad Steel Wire Strand for Antenna Market,Type M Guy Wire Alumoweld Aluminum Clad Steel
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