EN 8D Carbon Steel
We are EN 8D 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 8D Carbon Steels (BS 970 080A47) that meet national and international quality standards for heavy engineering, automotive, and industrial machinery applications. EN 8D Carbon Steel is an unalloyed high-medium carbon steel known for its superior tensile strength, higher wear resistance, excellent machinability, and outstanding surface hardenability. This grade is widely used in engineering components requiring high strength, wear resistance, and toughness under heavy loads. EN 8D 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 crankshafts, axles, gears, shafts, studs, bolts, die blocks, and hydraulic rams.
Our EN 8D 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 8D Carbon Steel?
EN 8D Carbon Steel (BS 970 080A47) is an unalloyed high-medium carbon steel grade designed for components requiring enhanced tensile strength, high hardness, and superior wear resistance. Supplied in bright drawn, normalized, or heat-treated conditions, it offers excellent surface finish and dimensional precision for demanding engineering applications.
Superior Tensile Strength
Provides higher load-bearing capacity for critical stress components.
Good Machinability
Readily machined into intricate gears, pinions, and shafts.
High Wear Resistance
Elevated carbon content ensures extended component lifespan under friction.
Induction & Flame Hardening
Can achieve high surface hardness up to 58–62 HRC for wear surfaces.
Core Toughness
Maintains core resilience under heavy impact and torsional forces.
Proven Quality
Full chemical & mechanical certification guarantees quality compliance.
Why Choose STEEL MART for EN 8D Carbon Steel
STEEL MART is the preferred choice for purchasing EN 8D 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 8D 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 8D Carbon Steels, STEEL MART also supplies a wide range of carbon steel and alloy steel products for various industrial applications.
Chemical Composition of EN 8D Carbon Steel
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.42 – 0.50 % |
| Manganese (Mn) | 0.60 – 1.00 % |
| Silicon (Si) | 0.10 – 0.40 % |
| Sulphur (S) | 0.050 % Max |
| Phosphorus (P) | 0.050 % Max |
This chemical composition provides higher strength and hardness capabilities.
Equivalent Grades of EN 8D Carbon Steel
| Standard | Equivalent Grade |
|---|---|
| BS 970 | 080A47 / EN 8D |
| AISI / SAE | 1045 / 1050 |
| DIN / W.Nr. | C45 / C50 (1.0503 / 1.0540) |
| EN | C45E / C50E (1.1191 / 1.1206) |
| JIS | S45C / S50C |
These equivalent grades ensure global compatibility across engineering standards.
Mechanical Properties of EN 8D Carbon Steel
The mechanical properties of EN 8D Carbon Steels make them ideal for heavy engineering and high-stress machine parts. In normalized or quenched & tempered condition, this grade offers elevated tensile strength, superior yield strength, and excellent wear resistance.
Heat Treatment & Processing of EN 8D Carbon Steel
EN 8D Carbon Steels respond exceptionally well to heat treatment for enhanced hardness and strength.
Normalizing
Heated to 820°C–860°C and air-cooled to refine grain structure.
Hardening (Quenching)
Heated to 820°C–860°C and quenched in oil or water for maximum hardness.
Tempering
Reheated to 550°C–660°C to adjust hardness and relieve internal stress.
Induction / Flame Hardening
Surface hardening up to 58–62 HRC for intense friction surfaces.
EN 8D Carbon Steel Industry Applications
EN 8D Carbon Steels are widely used across high-stress engineering sectors.
Heavy Automotive Parts
Used for heavy-duty crankshafts, axles, and transmission shafts.
Gear & Transmission
Used for high-wear gears, pinions, and sprockets.
Hydraulics & Heavy Plant
Used in hydraulic rams, cylinder rods, and heavy shafts.
High Strength Fasteners
Used for heavy studs, bolts, and coupling pins.
Agricultural & Mining
Used in heavy machinery wear parts and drive axles.
Tooling & Dies
Used for die blocks, wear plates, and machine fixtures.
Availability and Customization
At STEEL MART, we supply EN 8D 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 8D Carbon Steel (BS 970 080A47) is a high-strength unalloyed high-medium carbon engineering steel widely used in automotive, hydraulic, and heavy machinery manufacturing. With its superior tensile strength, excellent wear resistance, and high surface hardening capacity, it provides long-term reliability for heavy-duty crankshafts, axles, gears, and hydraulic rams. Supplied by STEEL MART with strict quality control and Mill Test Certification, EN 8D Carbon Steel is a dependable solution for high-stress engineering applications.
Frequently Asked Questions
Common answers regarding EN 8D Carbon Steel specifications and parameters.
EN 8D has a higher carbon content (0.42–0.50%), offering higher tensile strength, hardness, and wear resistance than standard EN 8.
Yes, it is excellent for induction or flame hardening, achieving surface hardness levels up to 58 to 62 HRC.
BS 970 080A47, AISI 1045 / 1050, and DIN C45 / C50 (1.0503 / 1.0540).
Heavy-duty crankshafts, gears, pinions, hydraulic rams, die blocks, and high-stress transmission shafts.
Round bars, Flat bars, Hex bars, Plates, Sheets, and custom cut sizes.