Copper Rods: Specifications, Properties, and Applications

Product Specifications

Technical details and manufacturing context for Copper Rods

Definition

Copper rods are long, solid cylindrical bars made primarily from pure copper or copper alloys, manufactured through processes like continuous casting, extrusion, or hot rolling. They serve as fundamental raw material stock for further fabrication into wires, tubes, rods of smaller diameters, machined components, and electrical conductors across multiple industries. The material's high electrical and thermal conductivity, corrosion resistance, and malleability make it suitable for drawing, machining, forging, or milling into final products. Typical specifications include diameters ranging from 3 to 100 mm, lengths from 1000 to 6000 mm, and copper purity between 99.9% and 99.99%. Mechanical properties such as tensile strength (200–400 MPa), hardness (40–120 HB), and elongation (10–50%) vary with temper and alloy composition. Electrical conductivity is at least 100% IACS, and thermal conductivity ranges from 380 to 400 W/(m·K). Density is approximately 8.9–8.94 g/cm³, and the melting point is around 1083–1085°C. Surface finish, tolerance, and other parameters are specified according to standards like GB/T 4423, GB/T 5231, GB/T 1031, and GB/T 231.1. These standards serve as procurement references; actual values must be confirmed with the supplier for the specific product. Copper rods are typically supplied in straight lengths or coils, depending on the intended application. They are essential in electrical, construction, automotive, and electronics industries. When selecting copper rods, consider the required diameter, length, purity, mechanical properties, and surface condition. Always verify model-specific values and standards with the legal manufacturer or supplier to ensure suitability for your application.

Working Principle

Copper rods function as semi-finished products that undergo subsequent manufacturing processes. Their high electrical conductivity, thermal conductivity, corrosion resistance, and malleability make them suitable for drawing into wires, machining into parts, or forming into other shapes through processes like cold drawing, forging, or milling. The rod's cylindrical shape provides a uniform cross-section, allowing consistent deformation during processing. The material's purity and alloy composition influence its mechanical and electrical properties, which are critical for final product performance. During drawing, the rod is pulled through dies to reduce diameter and increase length, aligning the grain structure to enhance strength and conductivity. Machining operations remove material to create precise components, while forging and milling shape the rod into desired geometries. The rod's surface finish and tolerance affect the quality of the final product, and proper handling is necessary to prevent damage or contamination. The working principle relies on the rod's ability to be transformed efficiently into various forms while maintaining its inherent material properties.

Common Materials

Copper (Cu), Copper Alloys (e.g., Brass, Bronze)

Technical Parameters

Parameter	Typical range	Notes & selection driver
DiameterRequired	3–100 mm	Cross-sectional diameter of the copper rodGB/T 4423
LengthRequired	1000–6000 m	Standard length of the copper rod as suppliedGB/T 4423
Copper PurityRequired	99.9–99.99 %	Percentage of pure copper content in the materialGB/T 5231
Tensile StrengthRequired	200–400 MPa	Maximum stress the copper rod can withstand while being stretched before breakingGB/T 4423
Electrical ConductivityRequired	≥100 % IACS	Electrical conductivity relative to International Annealed Copper StandardGB/T 5231
Surface Finish	Ra 0.8–3.2 text	Quality and type of surface treatment (e.g., bright, oxidized, polished)GB/T 1031
Tolerance	±0.05–±0.5 mm	Permissible variation in diameter dimensionsGB/T 4423
Hardness	40–120 HB	Affects machinability and wear resistanceGB/T 231.1
Elongation	10–50 %	Higher for annealed conditionGB/T 4423
Density	8.9–8.94 g/cm³	For pure copperGB/T 5231
Thermal Conductivity	380–400 W/(m·K)	High for heat exchange applicationsGB/T 5231
Melting Point	1083–1085 °C	For pure copperGB/T 5231

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Copper Core Part
Primary structural and functional element providing electrical and thermal conductivity

Material: Pure copper or copper alloy
Surface Layer Part
Protective coating or natural oxide layer that prevents corrosion and oxidation

Material: Copper oxide or protective coating material
Identification Markings Part
Manufacturer identification, alloy grade, and specification markings

Material: Ink or embossed markings
Protective Packaging Part
Prevents surface damage and corrosion during storage and transportation

Material: Plastic wrapping, paper, or protective coatings

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Copper Rods.

Manufacturers of Copper Rods

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Xinchang TuAn Machinery Co., Ltd.

Shanghai, CN

Also makes: Earth Electrode

Listed on the company's own website · profile compiled by CNFX from public sources

View profile Send enquiry

Xuyi Titan & Material Co.,Ltd

Jiangsu, CN

Also makes: Heat Treatment Furnace, Bearing/Housing, Conveyor Belt/Chain/Screw and 5 more

Listed on the company's own website · profile compiled by CNFX from public sources

View profile Send enquiry

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What are the typical diameter and length ranges for copper rods?

According to GB/T 4423, copper rods are commonly available in diameters from 3 to 100 mm and lengths from 1000 to 6000 mm. However, these are reference ranges; actual dimensions may vary by supplier and specific product. Always confirm the exact dimensions with the manufacturer or supplier.

What standards apply to copper rods?

Common standards include GB/T 4423 for dimensions and mechanical properties, GB/T 5231 for chemical composition and electrical conductivity, GB/T 1031 for surface finish, and GB/T 231.1 for hardness testing. These standards serve as procurement references; compliance should be verified with the supplier.

How do I select the right copper rod for my application?

Consider the required diameter, length, copper purity, mechanical properties (tensile strength, hardness, elongation), electrical and thermal conductivity, and surface finish. Also, evaluate the manufacturing processes you will use, such as drawing or machining. Always verify that the rod meets your specific requirements by consulting the supplier and reviewing test certificates.

What are the typical values for electrical conductivity and tensile strength?

Electrical conductivity is typically at least 100% IACS, and tensile strength ranges from 200 to 400 MPa, depending on temper and alloy. These values are indicative; actual properties depend on the specific product and should be confirmed with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Buyer enquiry

Request manufacturing insight for Copper Rods

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

pressure:	Not applicable (solid structural material, not fluid handling)
other spec:	Electrical conductivity: 100% IACS minimum for pure copper, Tensile strength: 200-400 MPa depending on temper
temperature:	-200°C to 250°C (copper's operational range, limited by annealing above 250°C)

Copper Rods

Product Specifications

Industry Taxonomies & Aliases

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards