- +91 8076217931
- officialsteelmart@gmail.com
- KH. No. 100/17/1, Mundka Industrial Area, Pole No. MDK Near Sentek Factory, New Delhi-110041
Steel Supplier
Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.40 – 0.45 |
| Manganese (Mn) | 0.70 – 0.90 |
| Phosphorus (P) | Max 0.045 |
| Sulphur (S) | Max 0.045 |
Hardness Range: 180 – 220 HRC (in untreated condition)
EN8D Carbon Steel – High Ductility & Machinability Engineering Steel
EN8D Carbon Steel is a medium carbon steel grade known for its high ductility, good machinability, and enhanced wear resistance. It is generally supplied in the normalized or untreated state but can be surface hardened using induction or flame hardening techniques, making it ideal for high-strength engineering applications.
This grade is commonly used for the manufacturing of shafts, gears, studs, axles, crane wheels, bolts, and precision machine components where both strength and machinability are required.
Key Features of EN8D Steel
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Medium tensile strength
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Enhanced surface hardness and wear resistance after induction hardening
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Excellent ductility and machinability
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Good response to heat treatment
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Consistent mechanical performance
EN8 vs. EN8D – What’s the Difference?
| Feature | EN8 | EN8D |
|---|---|---|
| Carbon Content | 0.36 – 0.44% | 0.40 – 0.45% |
| Surface Hardening | Flame/Induction Hardenable | Flame/Induction Hardened (by default) |
| Application Focus | General engineering parts | High-strength, wear-resistant components |
| Wear Resistance | Good | Superior |
| Machinability | Easy to machine | Improved machinability |
Heat Treatment Processes
| Treatment | Description |
|---|---|
| Hardening | Heat to 820–860°C and quench in oil or water |
| Tempering | Reheat to 550–660°C, hold ~1 hour/inch of thickness, then cool in oil/water |
| Normalizing | Heat to 830–860°C and air-cool to refine grain structure |
| Quenching | Quench after heating to improve strength and wear resistance |
Forging Guidelines
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Preheat the material uniformly
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Forging temperature: 850°C to 1050°C
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Do not forge below 850°C
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Allow to cool slowly, ideally in a furnace, for best results
Equivalent Grades of EN8D Steel
| Standard | Equivalent Grade |
|---|---|
| BS | 080A40 |
| DIN | CK45 |
| IS | 45C8 |
| EN | EN8D |
| SAE/AISI | 1040, 1045 |
Typical Applications of EN8D Steel
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Transmission Shafts
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Gears and Gear Blanks
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Crane Wheels
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Machine Spindles
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Studs and Bolts
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General Automotive & Mechanical Parts
Other Available Grades
C45, EN8, EN9, EN19, EN24, EN31, EN36C, EN41B, EN47, EN353, IS2062, 42CrMo4, HCHCR, OHNS, D2, D3, H11, H13, M2, M35, M42, M48, 1.2714, SKD-11, P20, P20+S, P20+Ni, SAE 4140, SAE 4340, SAE 8620, 16MnCr5, 20MnCr5, C35, C40, C50, C60, CK45, 40C8, 45C8, 55C8, C55MN75, SAE 52100, S40C, S355J2G3
Delivery Locations
We cater to a wide network across India, particularly in:
Uttar Pradesh:
Kanpur, Lucknow, Ghaziabad, Agra, Meerut, Varanasi, Prayagraj, Gorakhpur, Noida, Moradabad, Jhansi, Aligarh, Bareilly, Ayodhya, Muzaffarnagar, and more.
Rajasthan:
Jaipur, Jodhpur, Kota, Udaipur, Ajmer, Bhiwadi, Bikaner, Bhilwara, Alwar, Bharatpur, Chittorgarh, and others.
Haryana:
Faridabad, Gurugram, Panipat, Yamunanagar, Karnal, Hisar, Sonipat, Ambala, Rohtak, Rewari, Bahadurgarh, and more.
