+912267437972

+919022636025

enquiry@real-bolt.com

Contact Us

Chromium Copper C18200 Bolts Manufacturer & Exporter in India

Explore Chromium Copper C18200 Bolts Manufacturer & Exporter in India manufactured for demanding industrial applications with reliable strength, corrosion resistance and compliance with international standards.
Request a Quote
View Products

-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 Chromium Copper C18200 Bolts?

Chromium Copper C18200 bolts are high-conductivity copper alloy fasteners manufactured from UNS C18200 bar stock, conforming to ASTM B170 and ASTM B301. This alloy contains approximately 0.6-1.2% chromium, which is precipitation-hardened to deliver a unique combination of high electrical and thermal conductivity with superior mechanical strength and wear resistance.

Chromium Copper C18200 bolts are widely specified for resistance welding electrodes, electrical switchgear, and furnace hardware, where both conductivity and strength are critical. Their excellent resistance to softening at elevated temperatures makes them ideal for demanding electrical and thermal applications.

Quick Specifications

MaterialChromium Copper C18200
UNS NumberC18200
DIN Number2.1293
Material StandardASTM B170 / ASTM B301
Bolt Standard (Metric)DIN 933 / DIN 931 / ISO 4017
Bolt Standard (Inch)ASME B18.2.1
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M48 / ¼"-2"
Tensile Strength= 415 MPa (60 ksi)
Yield Strength= 345 MPa (50 ksi)
Hardness95-130 HB
? All material certified by NABL-accredited laboratory. Electrical conductivity and PMI available on request.

Complete the Fastener Set

Other Chromium Copper C18200 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Chromium Copper C18200 fastener range from certified copper alloy bar stock, including Chromium Copper C18200 Nuts, Chromium Copper C18200 Screws, Chromium Copper C18200 Washers, Chromium Copper C18200 Studs, and Chromium Copper C18200 Threaded Rods. All Chromium Copper C18200 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Chromium Copper C18200 Nuts
Chromium Copper C18200 Screws
Chromium Copper C18200 Washers
Chromium Copper C18200 Studs
Chromium Copper C18200 Threaded Rods

Technical Data

Chromium Copper C18200 Bolts Dimensions, Sizes & Thread Standards

Chromium Copper C18200 Bolts are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 931 (partial thread) / DIN 933 (full thread) / ISO 4017. Custom lengths in 5mm increments. Inch dimensions available per ASME B18.2.1. All Chromium Copper C18200 bolts dimensions conform to applicable DIN, ISO, and ASME B18 standards.

Hex Bolt Dimensions - Metric (DIN 931 / ISO 4017)

Size (M)Pitch (mm)A/F (mm)Head Ht (mm)Min L (mm)Max L (mm)
M61.0104.010200
M81.25135.312250
M101.5176.416300
M121.75197.520400
M162.02410.025500
M202.53012.530600
M243.03615.040600
M303.54618.750800
M364.05522.5601000
M424.56526.0801000
M485.07530.01001200

Dimensional & Material Standards

StandardCoversThread
DIN 931Hex bolts, partial threadMetric
DIN 933Hex bolts, full threadMetric
ISO 4017Hex head screws, fullMetric
ISO 4014Hex head screws, partialMetric
ASME B18.2.1Hex & heavy hex boltsUNC/UNF
Material StandardRequirement
ASTM B170Bar/rod - UNS C18200
ASTM B301Bolts, nuts, screws
EN 12163Rod for general purposes
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Chromium Copper C18200 Chemical Composition

Chromium Copper C18200 Bolts 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 B170

ElementComposition (%)
Copper (Cu)Balance
Chromium (Cr)0.6-1.2%
Iron (Fe)0.10% max
Silicon (Si)0.10% max
Nickel (Ni)0.20% max
Zinc (Zn)0.05% max
Lead (Pb)0.02% max
Total Impurities0.50% max
? All heats verified by NABL-accredited spectrometry. Electrical conductivity test available on request.

Why Chromium Copper C18200 Alloy Composition Matters for Bolts

Chromium (0.6–1.2%) — Strength & Softening Resistance
Chromium addition enables precipitation hardening, giving C18200 bolts high strength and excellent resistance to softening at elevated temperatures, ideal for resistance welding and furnace hardware.
High Copper Content — Conductivity
With over 98% copper, C18200 bolts retain high electrical and thermal conductivity, making them suitable for electrical connections and heat transfer applications where mechanical strength is also required.
Low Impurities — Weldability & Reliability
Strict control of iron, silicon, and lead ensures excellent weldability and prevents embrittlement, critical for electrical and thermal service fasteners.

Fastener Performance

Chromium Copper C18200 Bolts Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Chromium Copper C18200 Bolts per ASTM. Chromium Copper C18200 bolts achieve 220 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Bolt SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M8181412
M10362919
M12625028
M1615012055
M2029523687
M24510408125
M301020816200
?? Anti-galling: Use copper-based anti-seize (e.g., Jet-Lube, Loctite LB 8008). Lubricated values assume K=0.15. Avoid nickel-based anti-seize for copper alloys.

Industry Applications

Chromium Copper C18200 Bolts Applications — Industries & End Uses

Chromium Copper C18200 Bolts 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.
Chromium Copper C18200 bolts are the industry standard for securing resistance welding electrodes, arms, and holders due to their high conductivity and strength at elevated temperatures. They maintain mechanical integrity and electrical performance during repeated thermal cycling.
Used for bolting copper busbars, switchgear terminals, and high-current connectors, C18200 bolts ensure low-resistance joints and reliable performance in power distribution panels and substations.
Ideal for securing furnace fixtures, heating element supports, and thermal processing hardware, these bolts withstand high temperatures without softening, ensuring long service life in industrial furnaces.
C18200 bolts are specified for electrical connections in railway traction systems, third rail assemblies, and overhead line equipment, where both conductivity and mechanical strength are essential.

Chromium Copper C18200 Bolts Standards & International Certifications

Chromium Copper C18200 Bolts 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 931 DIN 933 ISO 4014 ISO 4017 ASME B18.2.1 BS 1768 BS 3692 BS 4190 IS 1367
Certifications
ISO 9001:2015NABL LabPED 2014/68/EUMTC 3.1 / 3.2

Buy Chromium Copper C18200 Bolts from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Chromium Copper C18200 Bolts — 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
Email Us

Answers for Buyers

Chromium Copper C18200 Bolts — Frequently Asked Questions

Browse expert answers to common questions about Chromium Copper C18200 Bolts 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 Chromium Copper C18200 bolts selection and pricing.
Chromium Copper C18200 bolts are available to DIN 933 (metric full thread), DIN 931 (metric partial thread), ISO 4017/4014, and ASME B18.2.1 (inch hex and heavy hex). Custom thread forms (UNC, UNF, BSW, BSF) and special dimensions are available on request with a typical lead time of 10-15 working days.
Use copper-based anti-seize compound (such as Jet-Lube, Loctite LB 8008, or Molykote Cu-7439) on threads and bearing surfaces. This prevents galling and ensures consistent torque. Avoid nickel-based or graphite-based anti-seize, which may reduce conductivity or cause galvanic corrosion.
Yes – C18200 bolts retain high strength and conductivity up to 400°C, making them ideal for resistance welding, furnace hardware, and high-current busbar connections. Their resistance to softening and oxidation ensures reliable performance in demanding thermal and electrical environments.
No formal MOQ for standard sizes (M8-M24) held ex-stock – we supply from single pieces for urgent maintenance. Custom sizes or non-standard threads typically require a 10 kg minimum. Quantity price breaks are available at 50 pcs, 200 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