Solid Copper Raw Stock Lot, ~15.2 lb — (2) Rectangular Blocks 1.25×2×5″ & 0.75×1.25×5″ w/Cutouts + (1) Round Billet Ø2×5.5″, High-Conductivity Copper for Machining, Bus Bars, Heat Sinks, EDM/Fixture Work

Solid Copper Raw Stock Lot, ~15.2 lb — (2) Rectangular Blocks 1.25×2×5″ & 0.75×1.25×5″ w/Cutouts + (1) Round Billet Ø2×5.5″, High-Conductivity Copper for Machining, Bus Bars, Heat Sinks, EDM/Fixture Work

Condition: Used surplus; surface patina, scratches, shop marks, and previous machining/cutouts present. No certs/grade stamps included.

This is a three-piece lot of solid copper—clean, hefty stock ready for machining, fabrication, or repurposing. You’ll get two rectangular blocks (one is 1.25″×2″×5″, the other 0.75″×1.25″×5″ with formed cutouts) plus a round billet measuring 2″ diameter × 5.5″ length. Total combined mass is about 15.2 lb, giving you plenty of high-conductivity, non-sparking material for electrical, thermal, and precision shop projects.

Features

• Three solid pieces (approx.):
  • Block A: 1.25″ × 2″ × 5″ rectangular
  • Block B: 0.75″ × 1.25″ × 5″ rectangular with machined relief/cutouts
  • Round Billet: Ø 2″ × 5.5″ length
• Total weight: ~15.2 lb of copper (excellent for counterweights or multiple small parts).
• High thermal & electrical conductivity: Ideal for bus bars, heat spreaders, spot-welding electrodes, and grounding hardware.
• Machinable: Turns, mills, drills, taps, and polishes well; non-sparking.
• Reuse-friendly: Cutouts on one block may serve as jigs/forms or be milled away for clean stock.

Applications / Spheres of Use

• Electrical/HVAC: custom bus bars, lugs, transformer links, high-amp grounding, thermal straps.
• Fabrication & machining: fixtures, EDM electrodes, heat sinks, precision spacers, artistic work.
• Welding & brazing: backing bars, chill bars, spot-weld tips (with appropriate alloys).
• Prototyping & repairs: bushings, hammered hardware, decorative accents, counterweights.

Notes & Measurements

• Dimensions are tape-measured; allow minor variance.
• Alloy/temper unknown (common shop coppers include C110/C101); no material certifications supplied.
• Surfaces show patina and shop wear; finish, square, or face as needed.
• The notched block has previously machined cutouts—they don’t affect the other pieces.

Comparable Items

• New certified C110 ETP copper bar/rod in similar sizes (higher cost, comes with mill certs).
• Aluminum or brass stock when lighter weight or easier chip control is desired.

Works As Part of Larger Systems

• Useful as heat spreaders under power electronics, IGBT modules, or LED plates.
• Conductive links in battery banks, UPS cabinets, switchgear prototypes.
• Thermal mass for soldering/fixture plates or as damping weights on test benches.

Trademarks

Any manufacturer names or alloy designations mentioned are the property of their respective owners and are used strictly for identification.

Related

copper bar stock lot; copper billet 2 inch round; 1.25x2x5 copper block; 0.75×1.25×5 copper with cutouts; high conductivity copper bar; non sparking copper metal; device to make custom bus bars; copper heat sink plate; edm copper electrode material; surplus copper machining stock

Common Requests:

1. “Exact weight per piece and more precise dimensions?”
2. “Can you identify the alloy (C110/C101) or provide a spark test photo?”
3. “Will you separate the pieces or cut to length?”
4. “Is the copper oxygen-free (OFHC)?”
5. “Can you verify flatness on the block faces before shipping?”

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