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Copper C10100 (OFE) Studs Manufacturer & Exporter in India

Explore Copper C10100 (OFE) Studs Manufacturer & Exporter in India manufactured for demanding industrial applications with reliable strength, corrosion resistance and compliance with international standards.
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-100

Min Temp

260

Max Temp

🌡

260

Suitable for continuous service up to approximately 260°C under typical operating conditions.

⚡

220

Typical tensile strength around 220 MPa depending on product form and heat treatment.

🛡

Good

Good corrosion resistance in a wide range of industrial environments.

⚖

8.96

Typical density is approximately 8.96 g/cm³.

Product Overview

What are Copper C10100 (OFE) Studs?

Copper C10100 (OFE) studs are high-purity, oxygen-free electronic copper fasteners manufactured from UNS C10100 bar or rod, conforming to ASTM B187 and ASTM F68. With a minimum copper content of 99.99% and extremely low oxygen (=0.0005%), these studs offer exceptional electrical and thermal conductivity, making them the preferred choice for critical electrical, vacuum, and cryogenic applications.

OFE copper studs are non-magnetic, corrosion-resistant, and free from hydrogen embrittlement, ensuring reliable performance in high-vacuum, UHV, and high-purity process environments. They are widely specified for semiconductor fabrication, particle accelerators, and power transmission assemblies where maximum conductivity and purity are essential.

Quick Specifications

MaterialCopper C10100 (OFE)
UNS NumberC10100
DIN Number2.0040
Material StandardASTM B187 / ASTM F68
Stud Standard (Metric)DIN 976 / ISO 898-1
Stud Standard (Inch)ASME B18.31.2
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M64 / ¼"-2½"
Tensile Strength220 MPa (32 ksi) min
Yield Strength69 MPa (10 ksi) min
Hardness45 HV max
? All material certified by NABL-accredited laboratory. Conductivity and purity test reports available on request.

Complete the Fastener Set

Other Copper C10100 (OFE) Fastener Products Available from RealBolt

RealBolt also manufactures the complete Copper C10100 (OFE) fastener range from certified copper alloy bar stock, including Copper C10100 (OFE) Bolts, Copper C10100 (OFE) Nuts, Copper C10100 (OFE) Screws, Copper C10100 (OFE) Washers, and Copper C10100 (OFE) Threaded Rods. All Copper C10100 (OFE) fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Copper C10100 (OFE) Bolts
Copper C10100 (OFE) Nuts
Copper C10100 (OFE) Screws
Copper C10100 (OFE) Washers
Copper C10100 (OFE) Threaded Rods

Technical Data

Copper C10100 (OFE) Studs Dimensions, Sizes & Thread Standards

Copper C10100 (OFE) Studs are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 976 (metric) / ASME B18.31.2 (inch). Custom lengths in 5mm increments. Inch dimensions available per customer specification. All Copper C10100 (OFE) studs dimensions are verified against applicable DIN, ISO, and ASME B18 standards before

Stud Dimensions - Metric (DIN 976)

Size (M)Pitch (mm)Stud Dia (mm)Length Range (mm)
M61.06.020-200
M81.258.025-250
M101.510.030-300
M121.7512.035-400
M162.016.040-500
M202.520.050-600
M243.024.060-800
M303.530.080-1000
M364.036.0100-1200
M424.542.0120-1500
M485.048.0140-1800
M565.556.0160-2000
M646.064.0180-2500

Dimensional & Material Standards

StandardCoversThread
DIN 976Threaded rods & studsMetric
ISO 898-1Mechanical propertiesMetric
ASME B18.31.2Continuous thread studsUNC/UNF
ASTM F468Nonferrous fastenersMetric/UNC
Material StandardRequirement
ASTM B187Bar/rod - UNS C10100
ASTM F68OFE copper fasteners
EN 13601Copper rod for electrical
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Copper C10100 (OFE) Chemical Composition

Copper C10100 (OFE) Studs are produced from either tin-stabilized Naval Brass C46400 or aluminium-nickel-iron Aluminium Bronze C63000, with elemental limits per ASTM and MIL-B-24059. Tin (0.5–1%) in Naval Brass prevents dezincification in seawater; aluminium and nickel additions in Al Bronze C63000 provide non-sparking ATEX Zone 1 compliance.

Chemical Composition per ASTM B187

ElementComposition (%)
Copper (Cu)99.99% min
Oxygen (O)0.0005% max
Silver (Ag)0.002% max
Other Elements0.001% max (each)
? All heats verified by NABL-accredited spectrometry. Conductivity and oxygen content certified per batch.

Why Copper C10100 (OFE) Alloy Composition Matters for Studs

99.99% Cu — Maximum Conductivity
OFE copper’s ultra-high purity ensures electrical conductivity =101% IACS, making these studs ideal for busbars, grounding, and high-current connections in sensitive equipment.
Oxygen-Free — No Hydrogen Embrittlement
The extremely low oxygen content prevents embrittlement during brazing or vacuum service, ensuring mechanical integrity and long-term reliability in UHV and cryogenic assemblies.
Trace Silver — Enhanced Softness
Trace silver content maintains ductility and softness, allowing easy forming and installation without risk of cracking or work hardening.

Fastener Performance

Copper C10100 (OFE) Studs Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Copper C10100 (OFE) Studs per ASTM. Copper C10100 (OFE) studs achieve 220 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Stud SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M8753.5
M101295.5
M1218148.0
M16352813.0
M20604820.0
M241008029.0
M3020016046.0
M3635028066.0
?? Soft copper: Use low torque and avoid over-tightening. Lubricated values assume K=0.18. For electrical connections, ensure full thread engagement for optimal conductivity.

Industry Applications

Copper C10100 (OFE) Studs Applications — Industries & End Uses

Copper C10100 (OFE) Studs from RealBolt are specified across marine hardware, ATEX hazardous areas, and naval defence where good corrosion resistance and 220 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.
Copper C10100 (OFE) studs are the standard for UHV chamber flanges, semiconductor process tools, and cleanroom assemblies where ultra-low outgassing and maximum conductivity are required. Used in ion implanters, sputtering targets, and vacuum feedthroughs.
OFE copper studs are specified for busbar joints, transformer connections, switchgear, and earthing systems in substations and power plants, ensuring minimal resistance and reliable current flow.
Used in superconducting magnet assemblies, cryostats, and particle accelerator beamlines, these studs maintain ductility and conductivity at liquid helium and nitrogen temperatures.
Copper C10100 (OFE) studs are used in MRI machines, X-ray generators, and mass spectrometers for high-purity, non-magnetic, and corrosion-resistant fastener requirements.

Copper C10100 (OFE) Studs Standards & International Certifications

Copper C10100 (OFE) Studs from RealBolt Engineering Industries are manufactured to internationally recognised fastener dimensional standards covering thread form, tolerances, strength grades, and quality requirements. Every batch ships with EN 10204 MTC 3.1/3.2, Lloyds Register or DNV certification, MIL specification documentation, and PMI (XRF) reports — available on request for all orders.
Standards
DIN 938 DIN 939 DIN 976-1 ASME B18.31.2 IS 1367
Certifications
ISO 9001:2015NABL LabPED 2014/68/EUMTC 3.1 / 3.2

Buy Copper C10100 (OFE) Studs from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Copper C10100 (OFE) Studs — for competitive pricing, EN 10204 MTC 3.1/3.2 documentation, and fast Mumbai dispatch. Standard sizes are ex-stock; custom dimensions accepted with 2–3 week lead time. Request your quote today.
022-6743-7972
+91 90226 36025
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Answers for Buyers

Copper C10100 (OFE) Studs — Frequently Asked Questions

Browse expert answers to common questions about Copper C10100 (OFE) Studs from RealBolt — covering alloy selection, ATEX Zone 1 compliance, dezincification resistance, ASTM standard, sizes, and EN 10204 documentation. Contact our technical team directly for project-specific guidance on Copper C10100 (OFE) studs selection and pricing.
Copper C10100 (OFE) studs are available to DIN 976 (metric threaded rods and studs), ASME B18.31.2 (inch continuous thread), and ASTM F68 (OFE copper fasteners). Custom thread forms (UNC, UNF, BSW, BSP) and lengths are available on request, with full traceability and certification.
For optimal conductivity, ensure clean, oxide-free mating surfaces and full thread engagement. Use a conductive joint compound if required. Avoid over-tightening, which can deform soft copper threads and reduce contact area. Torque values should be kept low and verified for each application.
Yes – OFE copper’s ultra-low oxygen content prevents embrittlement and outgassing, making these studs ideal for ultra-high vacuum (UHV) and cryogenic assemblies. They retain ductility and conductivity at temperatures down to 4K, and are widely used in particle accelerators and superconducting magnets.
No formal MOQ for standard metric and inch sizes held ex-stock – we supply from single pieces for R&D and maintenance. Custom sizes or special thread forms may require a 5 kg minimum. Quantity price breaks are available at 25 pcs, 100 pcs, and 500 pcs.

Industrial Cities We Serve:

  • Ahmedabad
  • Aurangabad
  • Bengaluru
  • Chennai
  • Coimbatore
  • Faridabad
  • Gandhidham
  • Greater Noida
  • Gurugram
  • Hazira
  • Hosur
  • Hyderabad
  • Jamnagar
  • Jamshedpur
  • Ludhiana
  • Mumbai
  • Mundra
  • Mysuru
  • Nagpur
  • Nashik
  • Navi Mumbai
  • Noida
  • Pune
  • Rajkot
  • Sanand
  • Surat
  • Thane
  • Tiruppur
  • Vadodara
  • Visakhapatnam

Countries We Export To:

  • US
  • Canada
  • Mexico
  • Germany
  • UK
  • France
  • Italy
  • Spain
  • Netherlands
  • Belgium
  • Poland
  • Sweden
  • Norway
  • Denmark
  • Turkey
  • UAE
  • Saudi Arabia
  • Qatar
  • Oman
  • Kuwait
  • Bahrain
  • South Africa
  • Egypt
  • Nigeria
  • Australia
  • New Zealand
  • Singapore
  • Malaysia
  • Indonesia
  • Thailand
  • Vietnam
  • South Korea
  • Japan
  • Brazil