C10100 Oxygen-Free Copper

C10100 Oxygen-Free Copper

>99.9% Cu
PURITY
100–101% IACS
CONDUCTIVITY
H00-H04
TEMPER
C10100 Copper, also known as Oxygen-Free Electronic (OFE) copper, is an ultra-high purity copper grade with extremely low oxygen content. It is widely used in high-performance electrical, vacuum, and semiconductor applications requiring superior conductivity and material stability.
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Lead Time: 3-5 Business Days

Product Overview

C10100 copper, commonly referred to as Oxygen-Free Electronic (OFE) copper, is a high-purity copper grade containing a minimum of 99.99% copper with extremely low oxygen levels. It is manufactured to ASTM B170 and ASTM F68 standards for applications requiring exceptional electrical and thermal conductivity.

Produced through controlled oxygen-free refining processes, C10100 copper offers superior ductility, excellent formability, and resistance to hydrogen embrittlement. Its conductivity reaches up to 101% IACS, making it ideal for high-frequency and precision electrical systems.

C10100 copper is widely used in vacuum components, semiconductor equipment, and advanced electronic devices where material purity is critical. It is particularly suitable for aerospace, medical, and scientific industries requiring stable and high-reliability performance.

Key Features

High purity copper (≥99.9% Cu)
Extremely low oxygen content (≤0.0005%)
Excellent electrical conductivity (101% IACS)
Superior thermal conductivity
High ductility and formability
Resistant to hydrogen embrittlement

Available Sizes

Copper Shape Thickness (mm) Width/Diameter (mm) Length (m)
Bar - Φ5-200 1-6
Wire - Φ0.05-10 Customize
Sheet 0.25-6 500-2500 1-6
Plate 6-200 200-3000 1-6
Strip 0.15-6 8-610 Customize
Tube OD: φ2-600; WT:φ0.2-100mm - 1-6
Coil 0.15-6 3-1250 1-6
Foil < 0.15 10-1350 Customize
Profile Customized Customize Customize

* Custom sizes available upon request. Contact our sales team for special requirements.

Technical Specifications

Precision data for engineering decisions. All values tested per ASTM standards.

01 Chemical Composition

Element Value (%)
Cu ≥ 99.90
Ag ≤ 0.005
Pb ≤ 0.001
Fe ≤ 0.002

02 Mechanical Properties

Property Condition Value
Tensile Strength H00 200–250 MPa
Yield Strength H00 70–120 MPa
Elongation H00 ≥ 40%
Hardness (HRB) H00 40–55

03 Physical Properties

Property Value
Density 8.94 g/cm³
Electrical Conductivity 100–101% IACS
Thermal Conductivity 391 W/m·K
Melting Point 1083°C
Thermal Expansion 16.5 ×10⁻⁶ /K

Applications & Use Cases

Proven solutions across diverse industries. From aerospace to marine environments.

C10100 Oxygen-Free Copper (OFE) — FAQ

Practical FAQ on C10100 OFE copper purity, ASTM specs, conductivity and sourcing for high-purity electrical and electronic use.

C10100 is oxygen-free electronic copper with Cu+Ag ≥99.99% and oxygen limited to <5 ppm. The ultra-low oxygen and residual impurities give it the highest electrical and thermal conductivity of the wrought coppers.
ASTM B152 (sheet/strip/plate), B187 (rod/bar), B272 (foil) and B301 (rod for electrical use) cover C10100. It is supplied as sheet, strip, rod, bar and foil.
Electrical conductivity is about 101% IACS — the highest of any copper — with high ductility in the annealed condition. Typical annealed UTS is ~200–250 MPa with elongation ~40%. It is not hardened by heat treatment.
C10100 is chosen for semiconductor lead frames, vacuum electronics, superconducting and cryogenic systems, and high-purity busbar where the lowest oxygen and best conductivity matter. C11000 (ETP) is the lower-cost general choice but contains oxygen and is prone to hydrogen embrittlement.
Linsy supplies C10100 sheet, strip, rod and foil to ASTM with an MTR/MTC, SGS on request, and RoHS/REACH support. Typical lead time is 10–60 days with low MOQ and a 1-hour quoting response.
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