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Reference values for clamping and terminating brass and copper electrical connectors.
| Product Type | Thread Size | Recommended Torque (Nm) | Max Torque (Nm) |
|---|
Note: Reference values only; actual parameters may vary based on installation tolerances. Consult engineering for critical designs.
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Composition:Cu 57.0-59.0%, Pb 2.5-3.5%, Fe 0.3% Max, Zn Balance.
Conductivity:~28% IACS
Advantages:The industry gold standard for high-speed CNC precision turning. Lead additions act as excellent chip-breakers, making it perfect for neutral links, terminal pins, and precision adapters.
Composition:Cu 58.0-60.0%, Pb 1.6-2.5%, Al 0.05% Max, Zn Balance.
Conductivity:~27% IACS
Advantages:Outstanding hot formability and ductility during pressing or forging. Ideal for complex brass plumbing accessories, compression fittings, and waste couplings.
Composition:Cu 99.90% Min, O 0.005-0.040% (50-400 ppm).
Conductivity:100-101% IACS
Advantages:Exceptional electrical and thermal transfer capabilities. Recommended for active heavy-current pathways, copper cable lugs, grounding plates, and main busbars.
Composition:Base alloy electroplated with 3-5µm Pure Tin (Sn).
Conductivity:Dependent on base metal (~28% to 101% IACS)
Advantages:The thin tin boundary layer blocks atmospheric contact. Prevents copper oxidation and galvanic contact corrosion in salt air, marine installations, or wet environments.
Composition:Al Balance, Mg 0.35-0.8%, Si 0.3-0.7%, Fe 0.5% Max.
Conductivity:~55-60% IACS
Advantages:Specifically formulated to combine mechanical strength with high conductivity. Best for lightweight heavy-power transmission lines, busbars, and distribution terminal lugs.
Composition:Medium-carbon steel (C 0.30-0.50%), quenched and tempered.
Conductivity:~12% IACS (Structural fastening only)
Advantages:Superior shear strength (800 MPa tensile). Hardened through thermal heat treatment; standard choice for heavy bolts, structural u-bolts, and high-load masonry anchors.
Composition:Cr 17.0-19.0%, Ni 8.0-10.0%, C 0.07% Max, Fe Balance.
Conductivity:~2.5% IACS (Structural/Enclosures)
Advantages:Excellent atmospheric corrosion resistance. Ideal for generic outdoor brackets, mounting channels, pipework u-bolts, and rust-proof screws.
Composition:Cr 16.0-18.0%, Ni 10.0-14.0%, Mo 2.0-3.0%, Fe Balance.
Conductivity:~2.3% IACS (Structural/Marine)
Advantages:Addition of Molybdenum prevents pitting and crevice corrosion in chloride environments. Crucial for marine hardware, offshore clamps, and chemical processing fasteners.
Reference ampacity values for conducting materials based on size.
Note: Reference values only; actual parameters may vary based on installation tolerances. Consult engineering for critical designs.