Chromium Copper (C18200, C18150) – Properties, Composition & Uses

C18200 Chromium Copper is a high-conductivity copper alloy strengthened with 0.6–1.2% chromium. It delivers an excellent balance of electrical conductivity (80–85% IACS) and improved mechanical strength compared to pure copper.

This alloy is classified as RWMA Class 2 copper alloy and is widely used in resistance welding, electrical contacts, and high-current components.

At Nifty Alloys LLC, we supply certified Copper Alloys in UAE including C18200 round bars and rods sourced from approved mills.

The chromium addition increases strength and softening resistance while maintaining high conductivity. 

• High electrical conductivity
• Improved strength over pure copper
• Excellent resistance to thermal softening
• Good wear resistance
• Suitable for high-cycle resistance welding

Resistance Welding Electrodes

• C18200 is commonly used in spot welding and projection welding electrodes because it maintains strength at elevated temperatures while providing high electrical conductivity.

Electrical Contacts & Switchgear

• Used in medium- and high-voltage switchgear, connectors, and circuit components requiring durability and conductivity.

Mold Inserts

• Due to its thermal conductivity, C18200 is used in plastic injection molds where heat transfer efficiency is critical.

Heavy Industrial Equipment

• Applied in heat-resistant current-carrying parts in manufacturing and processing plants.

To estimate material weight before ordering, use our Steel & Metal Weight Calculator for quick calculations.

For stainless steel alternatives used in structural applications, see our guide on 17-4PH Stainless Steel Round Bar. 

C18200 is preferred when strength and durability are required along with high conductivity. Pure copper is used where maximum conductivity is needed but strength is less critical. 

C18200 chromium copper alloy is typically available as:

• Round bars
• Rods
• Electrodes
• Custom-cut lengths

As a reliable copper alloy stockist, Nifty Alloys supplies certified material with mill test certificates upon request across the UAE, Saudi Arabia, Qatar, Kuwait, Bahrain, and Oman, with global export capabilities. 

What is C18200 copper alloy used for? 

C18200 is mainly used for resistance welding electrodes, electrical contacts, switchgear components, and mold inserts due to its high conductivity and strength. 

What is the conductivity of C18200? 

C18200 typically offers 80–85% IACS electrical conductivity. 

How much chromium does C18200 contain? 

C18200 contains 0.6–1.2% chromium. 

What is the density of C18200? 

The density of C18200 chromium copper alloy is approximately 8.89 g/cm³. 

Is C18200 good for welding electrodes? 

Yes. C18200 is classified as RWMA Class 2 and is widely used for resistance welding electrodes because it balances strength and conductivity. 

• Trusted copper alloy stockist in UAE 
• Sourced from certified international mills 
• Fast delivery across UAE 
• Competitive pricing 
• Mill test certificates available 

Looking for certified C18200 Chromium Copper Round Bars in UAE? 
Request a quote from Nifty Alloys LLC – Contact Us for pricing and availability.