SFMTA-2027-08-LOC-_Attachment_C_-_Product_Data_Specification.pdf
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- Attached to
- EXT MTA | Bronze and Alloy, Grooved Contact Wire
- Solicitation number
- SFGOV-0000012025
- Issued by
- San Francisco County, California
About this file
This is a Product Data Specification document for the San Francisco Municipal Transportation Agency (SFMTA) Invitation for Bids (IFB) No. SFMTA-2027-08-LOC, which details the requirements for Bronze and Alloy, Grooved Contact Wire procurement. The SFMTA seeks to procure 15,000 feet of bronze and alloy grooved contact wire for use in overhead power systems for streetcars, trolleys, electric trolley buses, light rail, and heavy mass transit systems. The product is manufactured by Southwire and available in two alloy options: CuMg 0.2 (Alloy 80) and CuMg 0.5 (Alloy 55), offering 55 percent and 80 percent conductivity ratings respectively. The specification document, dated September 15, 2026, establishes the technical standards and physical requirements for the contact wire, including dimensions, weight, electrical properties, and construction standards compliant with ASTM B9 and EN 50149 specifications.
The product specifications indicate that the contact wire must meet high-tensile strength requirements suitable for reduced clearance maintenance in tunnel applications and line speeds exceeding 200 mph. The wire is offered in multiple configurations (round, grooved, figure 8, or figure 9) and is available with top lobe identification marking per IEEE 1896-2016. All products must be RoHS and Proposition 65 compliant and shipped on N-42 wooden reels or S-77 steel reels per Southwire's reel policy. The procurement is subject to Buy America compliance requirements. Bidders must provide warranty and lead time information with their submissions, and the SFMTA will award the purchase order to the lowest responsive bid that meets minimum qualifications. Substitute or alternative items will not be accepted. Local Business Enterprise (LBE) requirements may result in bid discounts for eligible bidders, and assessment will be conducted by the SFMTA's Contract Compliance Office.
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Sourcing Event 0000012025 SFMTA-2027-08-LOC SFMTA P-696c (07-24) Attachment C September 15, 2026 Product Specifications
Sourcing Event 0000012025
SFMTA-2027-08-LOC
Southwire Bronze and Alloy (Alloy80), Grooved Contact Wire Attachment C
Product Specifications
Bronze and Alloy, Grooved Contact Wire CuMg 0.2 (Alloy80)/CuMg 0.5 (Alloy 55) Contact CuAg0.1 and CuSn0.2/ Trolley Wire
Image not to scale. See Table 1 for dimensions.
CONSTRUCTION:
This product combines excellent wear characteristics, and high-tensile strength properties. Contact/ Trolley wire is available in a choice of two alloys to provide the best match of electrical and mechanical wear properties for each application - 55 percent and 80 percent conductivity IACS (CA165 and A162), and is offered in both ASTM and EN/IEC configurations: round (upon request), grooved, figure 8, or figure 9.
APPLICATIONS AND FEATURES:
For use as overhead power source on streetcars, trolleys, electric trolley buses, light rail and heavy mass transit systems.
Also used on electrically powered mine train, and industrial cranes. High-tensile strength properties allow for reduced clearance maintenance in tunnel applications. Southwire's bronze contact/trolley wire is ideal for transportation systems with increased line speeds just over 200 mph (322 km/h).
• High Tensile Strength and Breaking Load
• Highest Half-Hard Value of any Materials in Present Day Use.
• Durable and Reliable Support.
• Allows for Increase in Max Line Speeds
• Mechanically Rugged
• RoHS/Proposition 65 Compliant
• Ships on N-42 wooden reels (S-77 steel reels available per SW reel policy)
• Available with top lobe identification marking per IEEE 1896-2016
• Southwire SPEED Qualified for low volume requests
• Buy America Compliant
SPECIFICATIONS:
• ASTM B9 Bronze Trolley Wire
• EN 50149 Railway Applications. Fixed Installations. Electric Traction. Copper and Copper Alloy Grooved Contact Wires.
Table 1 – Physical and Electrical Data
Stock Number Cond. Size Strand Count Cond. Cmil Cond. Number Alloy Approx. OD Approx. Weight DC Resistance @ 25°C Rated Strength
AWG/kcmil No. of Strands cmil No. inch lb/1000ft Ω/1000ft lb
596440
2/0 1 137,900 1 CuMg0.2 0.392 417 0.094 7473 All dimensions are nominal and subject to normal manufacturing tolerances ◊ Cable marked with this symbol is a standard stock item
Notes:
Copyright © 2026 Southwire Company, LLC. All Rights Reserved UPDATED: May 13, 2026, 2:07 p.m.UTC REVISION: 1.000.015
Southwire Company, LLC | One Southwire Drive, Carrollton, GA 30119 | www.southwire.com
Stock # 596440 | SPEC 48302
1. These numbers represent the minimum percent IACS conductivity of the alloys. Other alloys are available subject to special inquiry.
2. Bronze trolley wire is normally manufactured from alloys 55 or 80.
3. Figure 9 wire, dimensions given are nominal height of entire section and width of lower lobe.
4. Tolerances: The above data are approximately and subject to normal manufacturing tolerances Weights, breaking strengths and resistance are base on nominal dimensions TBA stock codes are estimations only and actual product may vary. Please wait until a stock code is assigned to purchase connectors and/or fittings.
Contact Wire
Copper-Tin Alloy One Groove
Copper-Silver Alloy Two Groove
Copper-Magnesium Alloy
Three Groove
Copyright © 2026 Southwire Company, LLC. All Rights Reserved UPDATED: May 13, 2026, 2:07 p.m.UTC REVISION: 1.000.015
Southwire Company, LLC | One Southwire Drive, Carrollton, GA 30119 | www.southwire.com
Stock # 596440 | SPEC 48302
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