C80 Carbon Steel: Composition, Properties, Applications & Leading Suppliers in India

C80 carbon steel is a high-carbon non-alloy steel with exceptional hardness, tensile strength, and wear resistance. Designed for precision tools, springs, blades, and components requiring excellent surface hardness, C80 steel offers reliable performance in heat-treated conditions. It is widely used across tooling, automotive, and mechanical industries where fatigue and wear resistance are critical.

This blog will walk you through everything you need to know about C80 carbon steel — from its chemical and mechanical properties to its applications, heat treatment guidelines, equivalent grades, and supplier information in India.

🔍 What is C80 Carbon Steel?

C80 is a high-carbon steel grade categorized under the EN ISO 683-1 (formerly EN 10083-2) standard. With a carbon content of around 0.80%, it provides excellent surface hardness, edge retention, and tensile strength, especially when hardened and tempered. C80 is an ideal choice for making cutting tools, knives, measuring instruments, saw blades, and springs.

Its superior mechanical properties make it suitable for cold work applications and heat-treated industrial components.

🧪 Chemical Composition of C80 Carbon Steel

✅ High carbon content enables excellent hardness and wear resistance, while controlled S & P ensure better machinability.

⚙️ Mechanical Properties of C80 Carbon Steel (Typical – After Heat Treatment)

💡 The steel is not suitable for welding due to its high carbon content but is ideal for quenching and tempering operations.

🔥 Heat Treatment of C80 Carbon Steel

C80 is highly responsive to heat treatment processes to enhance wear resistance and toughness:

• Annealing: 700–750°C — reduces hardness for machining

• Hardening: 770–810°C — followed by oil quenching

• Tempering: 150–300°C — depending on required toughness

• Normalizing: 820–860°C — followed by air cooling

⚠️ Preheating is advised for any thermal or mechanical operation to prevent cracking.

🛠️ Key Features of C80 Carbon Steel

• ✅ High surface hardness and wear resistance

• ✅ Excellent tensile strength and fatigue resistance

• ✅ Good dimensional stability after hardening

• ✅ Superior edge retention (ideal for tools and blades)

• ✅ Available in various thicknesses and forms

• 🚫 Not recommended for welding

🧰 Applications of C80 Carbon Steel

Due to its exceptional mechanical properties, C80 steel is widely used in:

• 🔪 Blades and Knives

• ⚙️ Springs and Washers

• 🪛 Screwdrivers and Hand Tools

• 🧰 Saws, Drills, and Punches

• 🚗 Automotive Leaf Springs

• 🧾 Measuring and Cutting Instruments

• 🛠 Cold-rolled tools and dies

🛞 It is especially popular in tool-making, forging, cutlery, and automotive spring manufacturing.

🔁 Equivalent Grades of C80 Carbon Steel

📌 Grade equivalence is based on chemical content and heat treatment compatibility.

📦 Available Forms of C80 Steel

C80 is supplied in multiple forms to suit diverse industrial applications:

• Hot Rolled & Cold Rolled Sheets

• Precision Slit Coils

• Annealed or Hardened & Tempered Strips

• Forged Bars and Rounds

• Wire Rods for Springs

• Flat Bars and Custom Cut Sizes

🎯 Available in surface finishes such as bright, ground, oiled, or polished.

💰 C80 Carbon Steel Price in India (Indicative Range)

📌 Prices vary based on finish, thickness, dimensions, and order volume.

🧭 Top Suppliers of C80 Carbon Steel in India

Here are some of the ISO 9001-certified and trusted C80 steel suppliers in India:

• Triton Alloys Inc., Mumbai

• Masteel India Pvt. Ltd., Maharashtra

• SAIL (Steel Authority of India Ltd.)

• Virwadia Steels, Chennai

• Bhansali Inc., Gujarat

• Jindal Steel & Power, Delhi

• Maharashtra Steel, Pune

✅ Always ask for Mill Test Certificates (MTC) and third-party inspection reports for quality assurance.

📈 SEO Keywords for C80 Carbon Steel

• C80 carbon steel properties

• C80 chemical composition

• C80 steel vs 1080

• C80 carbon steel hardness

• C80 steel for knives

• C80 spring steel supplier India

• EN ISO 683-1 C80 steel

• C80 sheet and strip manufacturers

• C80 round bar price India

• High carbon steel for cutting tools

✅ Conclusion

C80 carbon steel is a premium high-carbon steel grade offering excellent hardness, tensile strength, and wear resistance—ideal for demanding tooling and industrial applications. Its ability to be precisely heat-treated and shaped into high-performance components makes it a go-to choice for engineers, toolmakers, and manufacturers across India.

Whether you need strips for springs, bars for forging, or sheets for cutting tools, C80 steel is widely available and competitively priced. With the right supplier, you’ll get the performance, reliability, and certifications your project demands.

Would you like this content delivered in HTML, turned into a WordPress blog post, or made into a downloadable PDF datasheet?