Electrolytic Tough Pitch 99.90 % Copper (ETP / Cu-ETP / C11000) — Copper Grade Specification, Properties & Equivalents

Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) is the workhorse of the copper family, prized for its excellent electrical and thermal conductivity and good formability. In India, this grade is indispensable for electrical and electronics manufacturers, power transmission & distribution companies, and automotive component makers. Its high purity (minimum 99.90% Cu) makes Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) the go-to material for applications demanding reliable performance and minimal energy loss. Fabricators across India rely on the consistent properties of Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) for producing everything from busbars and switch components to heat exchangers and decorative elements, underscoring its significance in the national industrial landscape. The widespread availability and understanding of its characteristics ensure efficient procurement and processing nationally.

Chemical Composition of Electrolytic Tough Pitch 99.90 % Copper (ETP / Cu-ETP / C11000)

Electrolytic Tough Pitch 99.90 % Copper (ETP / Cu-ETP / C11000) Chemistry

Element	Weight %
Cu	Min. 99.90
O	Max. 0.04
P	Max. 0.002
Fe	Max. 0.005
S	Max. 0.001
Sb	Max. 0.001
As	Max. 0.001
Bi	Max. 0.001
Pb	Max. 0.001
Ni	Max. 0.001
Zn	Max. 0.001
Ag	Max. 0.001

Mechanical Properties of Electrolytic Tough Pitch 99.90 % Copper (ETP / Cu-ETP / C11000)

Electrolytic Tough Pitch 99.90 % Copper (ETP / Cu-ETP / C11000) Mechanical Properties

Property	Value (Approx.)
Tensile Strength (UTS)	300-370 MPa
Yield Strength (YS) (0.5% offset)	110-200 MPa
Elongation at Break	10-35%
Hardness (Rockwell B)	40-65 HRB
Density	8.96 g/cm³
Electrical Conductivity	> 97% IACS
Thermal Conductivity	380-400 W/(m·K)

Electrolytic Tough Pitch 99.90 % Copper (ETP / Cu-ETP / C11000) Available Forms in India

Shape	Typical Sizes (mm)	Standard Length (m)
Sheet/Plate	0.5-50 (Thickness) x up to 1200 (Width)	Up to 3
Coil	0.1-5 (Thickness) x up to 1200 (Width)	Continuous
Rod/Bar	5-100 (Diameter/Width)	Up to 3
Wire	0.1-10 (Diameter)	Spools/Coils
Tube/Pipe	OD 5-100, Wall 0.5-5	Up to 6

Electrolytic Tough Pitch 99.90 % Copper (ETP / Cu-ETP / C11000) Real-world Applications

Electrical Industry: Busbars, switchgear components, connectors, terminals, cable sheathing.
Electronics Manufacturing: Heat sinks, lead frames, printed circuit boards (PCBs).
Power Generation & Distribution: High-conductivity windings, transmission components.
Automotive Sector: Radiator components, electrical wiring, connectors.
HVAC & Refrigeration: Heat exchangers, tubing, fittings.
Construction: Plumbing pipes, decorative elements, roofing.
Industrial Machinery: Bearings, bushings, electrical contacts.
Lighting: Fixtures, conductive elements.

Machinability & Weldability of Electrolytic Tough Pitch 99.90 % Copper (ETP / Cu-ETP / C11000)

Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) boasts good machinability, though it can be gummy. Use sharp, high-speed steel or carbide tools with ample clearance. For turning and milling, speeds around 70-120 m/min are typical, with moderate feed rates. Drilling requires copper-specific drills with a higher rake angle. Avoid excessive tool pressure to prevent galling. Lubrication with cutting oil is recommended. When welding Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000), TIG (GTAW) and MIG (GMAW) are common, often using ERCu or ERCuAl-A2 filler metals. Oxy-acetylene welding is also feasible. Preheating to 150-200°C aids in preventing cracking, especially for thicker sections. Inert gas shielding (Argon) is crucial. Post-weld inspection is important to ensure joint integrity. Due to its high thermal conductivity, ensuring adequate heat input is key for successful welding of Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000).

Heat Treatment & Processing of Electrolytic Tough Pitch 99.90 % Copper (ETP / Cu-ETP / C11000)

Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) is typically supplied in a cold-worked or annealed condition. Annealing is performed to soften the material and restore ductility after cold working. For Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000), annealing temperatures range from 400°C to 650°C, with holding times dependent on section thickness, usually 30-60 minutes per 25mm. Slow cooling from the annealing temperature is recommended to prevent distortion and maintain properties. Hardening by heat treatment is not applicable to Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) as it is a pure metal and does not form martensitic structures. Its strength is primarily derived from cold working. Stress relieving can be achieved at lower temperatures, around 200-300°C, to reduce residual stresses from forming or welding processes without significant softening of Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000).

Sourcing Electrolytic Tough Pitch 99.90 % Copper (ETP / Cu-ETP / C11000) in India

Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) is widely available across India, with major stockists located in industrial hubs like Mumbai, Pune, Chennai, and Delhi. Leading producers such as Hindalco, Vedanta, and national trading houses supply this grade. Minimum Order Quantities (MOQ) can vary significantly, from a few kilograms for wires and small components to several metric tons for large sheets and busbars. The price band for Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) typically ranges from INR 750 to INR 950 per kg, subject to market fluctuations and quantity ordered. Buyers should always request Mill Test Certificates (MTC) to ensure compliance with specified standards. Price negotiation is common for bulk orders of Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000).

International Equivalents for Electrolytic Tough Pitch 99.90 % Copper (ETP / Cu-ETP / C11000)

Standard	Code
ASTM	B152 / C11000
EN	CW004A
JIS	C1100
IEC	Cu-ETP
DIN	17660 / 2.1247 (approx.)
BS	1432 / C101 (approx.)

FAQs about Electrolytic Tough Pitch 99.90 % Copper (ETP / Cu-ETP / C11000)

What is Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) used for in India?

In India, Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) is extensively used in the electrical industry for busbars, switchgear, and connectors due to its high conductivity. It's also vital in electronics for heat sinks and PCBs, automotive for wiring, and HVAC for heat exchangers. Its excellent electrical and thermal properties make Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) suitable for a wide array of applications requiring efficient energy transfer and heat dissipation across various Indian manufacturing sectors.

What is the minimum purity of Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000)?

The grade name itself signifies the minimum purity. Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) contains a minimum of 99.90% copper by weight. This high purity is crucial for achieving its characteristic excellent electrical conductivity and thermal properties, distinguishing it from lower-purity copper alloys and making Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) the preferred choice for demanding electrical applications.

Can Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) be hardened by heat treatment?

No, Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) cannot be hardened by heat treatment in the same way steels can undergo hardening. As a pure metal, it lacks alloying elements that form hardenable phases. The strength and hardness of Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) are primarily achieved and controlled through work hardening (cold working). Heat treatment, specifically annealing, is used to soften it and restore ductility, making it formable rather than hardening it.

Where can I source Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) in India?

You can source Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) from major industrial suppliers and stockists across India, particularly in Mumbai, Pune, and Chennai. Leading manufacturers like Hindalco and Vedanta, along with numerous authorized distributors, offer this grade. Check listings on industrial marketplaces like MetaleMart for competitive pricing and reliable suppliers of Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000).

What are the typical mechanical properties of Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000)?

Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) typically exhibits a tensile strength (UTS) between 300-370 MPa and a yield strength (YS) ranging from 110-200 MPa, depending on its temper (degree of cold work). Elongation is generally between 10-35%, indicating good ductility. Hardness measures around 40-65 on the Rockwell B scale. These values for Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) make it suitable for bending, forming, and impact resistance in many applications.

What is the difference between ETP copper and OFHC copper?

The primary difference lies in the oxygen content and consequently, the electrical conductivity and weldability. Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) has a controlled oxygen content (up to 0.04%) which slightly reduces its conductivity compared to Oxygen-Free High Conductivity (OFHC) copper. OFHC copper has minimal oxygen, offering slightly higher conductivity (>101% IACS) and better weldability, especially in vacuum environments. However, Electrolytic Tough Pitch 99.90% Copper (ETP / Cu-ETP / C11000) offers a superior balance of cost, conductivity, and formability for most general applications.

Tags: grade, copper, electrolytic tough pitch 99.90 % copper (etp / cu-etp / c11000)