Purohit Steel is a leading EN8 Steel Stockist and Exporter in India, supplying premium unalloyed medium carbon engineering steel (BS 970 080M40) with verified chemical composition, mechanical properties and full traceability for engineering workshops, OEMs and fabricators.
As an ISO-certified company established in 1965, we maintain ready stock of EN8 steel in round bar, flat bar and block form, with in-house bandsaw cutting, machining, grinding and EDM support for fast turnaround across India and export markets.
Table of Contents
- 1. What is EN8 Steel
- 2. Why Purohit Steel for EN8
- 3. Comparison: EN8 vs EN9 vs EN19
- 4. Chemical Composition
- 5. Mechanical Properties
- 6. Physical & Thermal Properties
- 7. Equivalent International Grades
- 8. Heat Treatment Guidelines
- 9. Available Forms & Sizes
- 10. Machining & Selection Notes
- 11. Applications & Uses
- 12. Industries We Serve
- 13. Related Products
- 14. Authorized Stockist Brands
- 15. Cities We Supply in India
- 16. Our Services
- 17. Frequently Asked Questions
- 18. About Purohit Steel
- Our Certifications
- Countries We Export Worldwide
- Export Packaging & Shipping
- Quality Inspection & Testing
- Latest Price List
- MOQ & Payment Terms
- People Also Search For
What is EN8 Steel?
EN8 (BS 970 designation 080M40) is an unalloyed medium carbon engineering steel containing approximately 0.40% carbon. It is one of the most widely stocked general-purpose engineering steels in India, valued for its predictable strength, good machinability and cost-effectiveness compared with alloy grades such as EN19 or EN24.
EN8 is normally supplied in the normalized condition at approximately 152-207 HB, which offers a good balance of machinability and as-supplied strength. It responds well to further heat treatment: through-hardening and tempering can raise tensile strength to 700-850 MPa (201-255 HB), while flame or induction surface hardening can raise local surface hardness to roughly 55-60 HRC, giving a wear-resistant surface over a tough core.
EN8 offers good machinability by turning, milling, drilling and threading, and is weldable with proper precautions (preheating and post-weld stress relief) due to its medium carbon content.
Note: for higher hardenability or greater fatigue strength than plain-carbon EN8 can offer, see the comparison table below against EN9 and EN19.
Why Purohit Steel for EN8
- Ready Stock: Round bar, flat bar and block sizes held in inventory for immediate dispatch
- ISO-Certified Quality: Documented quality management since 1965
- Authorized Stockist: Sourced through globally reputed manufacturers, including NLMK Verona and SeAH CSS
- Value-Added Machining: In-house bandsaw cutting, precision machining, grinding, drilling, gun drilling, EDM and wire-cut
- Technical Support: Assistance with grade selection, heat treatment guidance and equivalence mapping
- Pan-India & Export Supply: Warehousing in Vasai with a sales outlet in Mumbai, serving customers across India and international markets
- Export-Ready Packaging: Palletised, moisture-protected packing suitable for both domestic transport and export shipment
Comparison: EN8 vs EN9 vs EN19
Buyers often need to choose between related engineering steel grades depending on the strength, hardenability and wear resistance required. The table below compares EN8 against two other EN-series grades Purohit Steel stocks, to help select the right material for the application.
| Factor | EN8 (080M40) | EN9 (070M55) | EN19 (709M40) |
|---|---|---|---|
| Type | Unalloyed medium carbon | Unalloyed higher carbon | Cr-Mo alloy steel |
| Typical carbon content | ~0.36-0.44% | ~0.50-0.60% | ~0.35-0.45% (alloyed) |
| Alloying elements | None | None | Chromium + Molybdenum |
| Typical supply condition | Normalized, 152-207 HB | Normalized, ~170-230 HB | Hardened & tempered, ~248-302 HB |
| Tensile strength (hardened & tempered) | 700-850 MPa | 700-900 MPa | 850-1000 MPa |
| Best suited for | General shafts, bolts, low-to-medium stress components | Gears and components needing greater wear resistance than EN8 | Heavy-duty shafts, gears and high-stress automotive/machinery parts |
| Relative cost | Lowest | Low-Medium | Medium-High |
EN8 Chemical Composition
Composition as per BS 970 080M40 (typical mill range, weight %):
| Element | Symbol | Composition (%) |
|---|---|---|
| Carbon | C | 0.36 - 0.44 |
| Silicon | Si | 0.10 - 0.40 |
| Manganese | Mn | 0.60 - 1.00 |
| Phosphorus | P | 0.050 max |
| Sulphur | S | 0.050 max |
| Iron | Fe | Balance |
Mechanical Properties of EN8
Typical values across the common supply and heat-treated conditions:
| Property | Normalized | Hardened & Tempered |
|---|---|---|
| Hardness | 152 - 207 HB | 201 - 255 HB |
| Tensile Strength (Rm) | 540 - 700 MPa | 700 - 850 MPa |
| Yield Strength (Rp0.2) | 280 MPa min | 465 MPa min |
| Elongation at Break (A) | 16 - 18% | 13 - 16% |
| Impact Toughness (Charpy V) | — | 25 - 28 J |
| Modulus of Elasticity (E) | ~205 - 210 GPa | |
| Flame/Induction Surface Hardness | Up to 55 - 60 HRC (surface) | |
Values are typical and can vary with section size and mill batch. Mill test certificates (EN 10204 2.2 / 3.1) are available on request.
Physical & Thermal Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Thermal Conductivity (room temp.) | ~48 - 51 W/(m·K) |
| Coefficient of Thermal Expansion (20-200°C) | ~11.3 × 10-6 /K |
| Specific Heat Capacity | ~470 J/(kg·K) |
Equivalent International Grades
| Country / Standard | Designation |
|---|---|
| UK (BS 970-1991) | EN8 / 080M40 |
| USA (AISI / SAE) | 1040 |
| Germany (DIN, Werkstoffnummer) | Ck40 / C40 (1.1186) |
| Japan (JIS G4051) | S40C |
| USA (UNS) | G10400 |
EN8 is a plain carbon steel and is not the same as the alloyed EN9, EN19 or EN24 grades — see the comparison table above before substituting grades.
Heat Treatment Guidelines
| Process | Guideline |
|---|---|
| Supply condition | Normalized, 152-207 HB — readily machinable in the as-supplied condition |
| Stress relieving (after heavy machining) | 550-650°C, hold, air or furnace cool |
| Hardening | Austenitize at 820-860°C, quench in oil or water depending on section size |
| Tempering | 550-660°C per target hardness, air cool — yields approx. 700-850 MPa / 201-255 HB |
| Flame / induction surface hardening | Localised heating to 820-860°C followed by rapid quench, giving approx. 55-60 HRC surface hardness with a tough core |
| Welding | Weldable with preheat of approx. 150-200°C and post-weld stress relief due to medium carbon content |
Available Forms & Sizes
- Round Bars
- Flat Bars / Plates
- Blocks
- Custom sizes cut to drawing via in-house bandsaw cutting
Material is machined, ground, drilled and finished in-house through our precision machining, grinding, drilling, gun drilling, EDM and wire-cut facilities, so components can be supplied close to finished dimensions.
Machining & Selection Notes
- Cutting tools: In the normalized condition (152-207 HB), EN8 machines readily with standard HSS or carbide tooling at moderate to high cutting speeds.
- Surface hardening: Where localised wear resistance is needed, flame or induction hardening after machining raises surface hardness to 55-60 HRC while keeping the bulk of the part tough.
- Welding / repair: Weldable with preheating (150-200°C) and post-weld stress relief recommended due to the medium carbon content.
- Grade selection: Choose EN8 for general-purpose shafts, bolts and low-to-medium stress components; step up to EN9 for greater wear resistance and hardenability, or EN19 where higher tensile strength and fatigue performance are required — see the comparison table above.
Applications of EN8 Steel
EN8 steel is widely used across general engineering and automotive manufacturing in India and export markets. Its balance of strength, toughness and machinability makes it suitable for a wide range of mechanical components.
- Transmission shafts and axle shafts
- Gears, sprockets and pinions
- Bolts, studs and fasteners
- Connecting rods
- Machine tool spindles
- Crankshafts and camshafts
- Keys, hubs and couplings
- Rollers, pins and general machinery parts
EN8 for General Engineering
In general engineering, EN8 is preferred where moderate strength, reliable machinability and cost-effectiveness are required, without the added cost of alloy steels such as EN19 or EN24.
Automotive Industry
EN8 is widely used for shafts, gears, bolts, axles and general machine components across the automotive and allied industries.
Industries We Serve
- Automotive industry
- General engineering & machinery
- Fastener manufacturing
- Agricultural equipment
- Construction equipment
- Tool & die workshops
Authorized Stockist
EN8 Steel Supply Locations Across India
We supply EN8 steel across major industrial cities including Mumbai, Pune, Khopoli, Nashik, Aurangabad, Navi Mumbai, Palghar, Umbergaon, Vapi, Valsad, Daman, Vadodara, Ahmedabad, Rajkot, Hyderabad, Bangalore, Chennai, Cochin, Delhi, Gurgaon, Manesar and Sonipat — as well as to export markets.
Our Steel Products
Our Services
Frequently Asked Questions
About Purohit Steel
Purohit Steel was established in 1965 by Shree Bherumalji Rajpurohit, a visionary in metallurgy. Over the decades, we have built a strong reputation as a trusted stockist and exporter of tool steel, plastic mould steel and engineering steel products across India.
As an ISO-certified company, we source premium materials from globally reputed manufacturers and operate a modern warehousing facility in Vasai along with a sales outlet in Mumbai, enabling efficient storage, fast processing and timely delivery across India and export markets.
With decades of relationships with tool & die manufacturers and a customer-focused approach, Purohit Steel continues to deliver reliable, technically supported steel solutions for the engineering industry.
Read more about Purohit Steel, view our certifications, or get in touch with our technical sales team.
Our Certifications
Purohit Steel operates as an ISO-certified company, backed by documented quality management, safety and compliance certifications that support reliable supply to domestic and export customers.
View all certificates in detail on our Certifications page.
Countries We Export Worldwide
Beyond India, Purohit Steel exports tool & mould steel grades to customers across the following countries and regions:
| Export Destinations | |||||
|---|---|---|---|---|---|
| UAE | Saudi Arabia | Oman | Bangladesh | Sri Lanka | Nepal |
| Vietnam | Thailand | Indonesia | Kenya | Nigeria | South Africa |
For export enquiries and destination-specific documentation, please contact our sales team.
Export Packaging & Shipping
Bars, flats and blocks are packed to withstand handling, transit and marine shipment, whether for domestic dispatch or export orders.
- Palletised and strapped packing for round bars, flat bars and blocks
- Moisture-protected wrapping to prevent surface corrosion in transit
- Seaworthy export packing with clear shipping marks and material identification
- Documentation support including packing lists, invoices and mill test certificates for customs clearance
- Shipment by road, rail or sea freight as per order requirement and destination
Quality Inspection & Testing
Every batch held in our stock is checked through documented inspection procedures before dispatch, so mould makers and OEMs receive material with verified, traceable quality.
- Chemical composition verification against mill certificates
- Hardness testing (Brinell / Rockwell) on received stock
- Dimensional inspection as per standard bar and block tolerances
- Visual and surface defect inspection
- EN 10204 2.2 / 3.1 mill test certificates provided on request
- Third-party inspection coordination available for export orders
Full material traceability is maintained from incoming stock through to dispatch for every order.
Latest Price List
Pricing depends on section size, quantity, form (round bar / flat bar / block) and current raw material rates. Indicative guidance is below — contact us for a firm, up-to-date quotation.
| Form | Typical Price Basis |
|---|---|
| Round Bar | Per Kg, based on diameter & length — contact for latest rate |
| Flat Bar / Plate | Per Kg, based on thickness & size — contact for latest rate |
| Block (cut to size) | Per Kg / Per Piece, based on drawing — contact for latest rate |
Prices are subject to change with raw material and freight costs. Share your required size and quantity via the quotation form or WhatsApp for the latest price.
MOQ & Payment Terms
Minimum Order Quantity: Flexible MOQ depending on size and form — from small trial quantities for tooling houses up to bulk orders for OEMs, subject to confirmation at enquiry stage.
Payment Terms: Advance payment / part-advance with balance before dispatch for domestic orders; T/T (bank transfer) or Letter of Credit (LC) for export orders, depending on order value and destination.