EN 9 Carbon Steel
We are EN 9 Carbon Steel Manufacturers, Suppliers, and Exporters in Mumbai, India. STEEL MART is an ISO 9001:2015 certified company established in 1986, with decades of experience in supplying high-quality carbon steel products to various industries. We specialize in manufacturing and supplying EN 9 Carbon Steels (BS 970 070M55) that meet national and international quality standards for heavy engineering, automotive, cutting tool, and industrial machinery applications. EN 9 Carbon Steel is an unalloyed high carbon steel known for its high tensile strength, outstanding wear resistance, good machinability, and superior flame or induction hardenability. This grade is widely used in engineering components requiring extreme wear resistance, hardness, and durability under heavy impact and friction. EN 9 is typically supplied in as-rolled, normalized, or bright drawn condition, ensuring consistent and reliable mechanical performance. This carbon steel grade is widely used for manufacturing heavy-duty gears, camshafts, shear blades, wear plates, sprockets, keys, and press tools.
Our EN 9 Carbon Steels are 100% Prime – Tested & Guaranteed, ensuring precise chemical composition, dimensional accuracy, and consistent mechanical properties. Each product is supplied with proper Mill Test Certificates (MTC) confirming compliance with BS 970 / EN standards. STEEL MART follows strict quality control procedures and ensures timely delivery.
What is EN 9 Carbon Steel?
EN 9 Carbon Steel (BS 970 070M55) is an unalloyed high carbon steel grade designed for applications requiring high tensile strength, extreme wear resistance, and high hardness. Supplied in bright drawn, normalized, or heat-treated conditions, it offers superior performance for cutting tools, heavy gears, shear blades, and press tooling.
High Tensile Strength
Delivers high load-bearing capacity for severe mechanical stress.
Good Machinability
Easily machined into complex gears, cams, and shear components.
Outstanding Wear Resistance
High carbon content guarantees exceptional resistance to abrasion.
Induction & Flame Hardening
Achieves extreme surface hardness up to 58–62 HRC for intense friction.
Impact Resilience
Maintains reliable core toughness under repeated heavy impacts.
Certified Quality
Supplied with full MTC and strict quality compliance.
Why Choose STEEL MART for EN 9 Carbon Steel
STEEL MART is the preferred choice for purchasing EN 9 Carbon Steel due to its strong reputation for quality and reliability. With over 40 years of experience in the steel industry, the company ensures that every product meets strict industry standards. The company follows strict quality inspection procedures to ensure that every EN 9 Carbon Steel product meets international standards.
Each product is carefully tested to ensure durability, strength, and performance. Customers trust STEEL MART for consistent quality, competitive pricing, and timely delivery. The company maintains a large inventory to meet urgent and bulk requirements efficiently. In addition to EN 9 Carbon Steels, STEEL MART also supplies a wide range of carbon steel and alloy steel products for various industrial applications.
Chemical Composition of EN 9 Carbon Steel
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.50 – 0.60 % |
| Manganese (Mn) | 0.50 – 0.90 % |
| Silicon (Si) | 0.10 – 0.40 % |
| Sulphur (S) | 0.050 % Max |
| Phosphorus (P) | 0.050 % Max |
This chemical composition provides higher strength, hardness, and wear resistance.
Equivalent Grades of EN 9 Carbon Steel
| Standard | Equivalent Grade |
|---|---|
| BS 970 | 070M55 / EN 9 |
| AISI / SAE | 1055 |
| DIN / W.Nr. | C55 / 1.0535 |
| EN | C55E / 1.1203 |
| JIS | S55C |
These equivalent grades ensure global compatibility across engineering standards.
Mechanical Properties of EN 9 Carbon Steel
The mechanical properties of EN 9 Carbon Steels make them ideal for heavy machinery and tooling parts. In normalized or quenched & tempered condition, this grade offers elevated tensile strength, superior yield strength, and exceptional wear resistance.
Heat Treatment & Processing of EN 9 Carbon Steel
EN 9 Carbon Steels respond exceptionally well to heat treatment for extreme hardness and durability.
Normalizing
Heated to 820°C–860°C and air-cooled to refine grain structure.
Hardening (Quenching)
Heated to 810°C–850°C and quenched in oil or water for high hardness.
Tempering
Reheated to 550°C–660°C to adjust hardness and improve toughness.
Induction / Flame Hardening
Surface hardening up to 58–62 HRC for intense friction surfaces.
EN 9 Carbon Steel Industry Applications
EN 9 Carbon Steels are widely used across high-friction and tool engineering sectors.
Gears & Transmission
Used for heavy-duty gears, sprockets, and pinions.
Automotive & Engine
Used for camshafts, drive keys, and engine parts.
Cutting Tools & Blades
Used for shear blades, agricultural knives, and cutter bars.
Press Tooling & Dies
Used for wear plates, press tools, and die components.
Agricultural & Earthmoving
Used in tillage tools, excavator pins, and wear strips.
General Machinery
Used in high-stress machine spindles and guide rails.
Availability and Customization
At STEEL MART, we supply EN 9 Carbon Steels in a wide range of sizes and specifications.
| Diameter | Diameter ranging from 10 mm to 400 mm |
| Condition | Available in As-Rolled / Normalized / Q&T / Bright Drawn condition |
| Length | Standard lengths from 3 meters to 6 meters |
| Finish | Bright drawn, black hot rolled, and turned finish available |
| Customization | Custom cut sizes available as per project requirements |
| Services | Machining, cutting, turning, and grinding services available |
| Certification | Supplied with Mill Test Certificates and inspection reports |
Our strict quality control ensures consistent quality.
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EN 9 Carbon Steel (BS 970 070M55) is a high-carbon unalloyed engineering steel widely used in automotive, tooling, cutting blade, and heavy machinery manufacturing. With its high tensile strength, outstanding wear resistance, and surface hardening capability, it provides long-term reliability for gears, camshafts, shear blades, and wear plates. Supplied by STEEL MART with strict quality control and Mill Test Certification, EN 9 Carbon Steel is a dependable solution for severe wear applications.
Frequently Asked Questions
Common answers regarding EN 9 Carbon Steel specifications and parameters.
Its higher carbon content (0.50–0.60%) provides exceptional hardness, high tensile strength, and superior resistance to friction and wear.
Yes, it responds very well to flame or induction hardening, reaching surface hardness levels of 58 to 62 HRC.
BS 970 070M55, AISI 1055, DIN C55 (1.0535), and JIS S55C.
Heavy-duty gears, camshafts, shear blades, agricultural knives, wear plates, sprockets, and press tools.
Round bars, Flat bars, Hex bars, Plates, Sheets, and custom cut sizes.