EN8 Carbon Steel – Medium Carbon Engineering Steel

EN8 Carbon Steel, also referred to as 080M40, is a medium-carbon, medium-tensile steel commonly used in engineering applications that demand greater strength than mild steel. Known for its excellent machinability and good wear resistance, EN8 is a popular choice for components such as shafts, axles, bolts, gears, studs, and machinery parts.

EN8 is typically supplied in the untreated state but can also be heat-treated to enhance its hardness and tensile strength, especially through flame or induction hardening methods.

---

Key Characteristics & Advantages

• Medium tensile strength

• Excellent machinability

• Suitable for heat treatment and surface hardening

• Offers improved wear resistance after induction hardening

• Maintains consistent metallurgical properties in heat-treated forms

---

Heat Treatment Options

---

Forging Guidelines

• Preheat slowly and uniformly

• Forging temperature: 850°C to 1050°C

• Do not forge below 850°C

• Cool slowly after forging, preferably in a furnace

---

Available Product Forms

EN8 Steel Bars

• Hot Rolled Round Bars: 16mm – 250mm diameter

• Cold Drawn Bars: 5mm – 70mm diameter

• Heavy Forged Rounds: 200mm – 450mm

• Machined Rounds: 260mm – 620mm

• Ship Shafts: 450mm – 1000mm diameter

EN8 Steel Flats and Plates

• Flat Bars: Thickness up to 50mm, Width up to 455mm

• Forged Flat Bars: Up to 305mm thick, 455mm wide

• Plates: 16mm – 150mm

• Heavy Plates: 16mm – 350mm

EN8 Steel Sheets and Strips

• Cold Rolled Sheets: 0.4mm – 4mm thickness

• Hot Rolled Sheets: 2.7mm – 12mm

• Strips: 0.4mm – 4mm

EN8 Steel Blocks

• Machined/Bandsaw Cut Blocks: Up to 350mm thickness

• Forged Blocks: Up to 400mm thickness

EN8 Forged Gear Blanks

• Diameter: 200mm – 1500mm

• Thickness: 80mm – 350mm

---

Equivalent Grades

---

Applications of EN8 Steel

EN8 is widely used in the automotive, engineering, and manufacturing sectors for components requiring better mechanical properties than mild steel. Key applications include:

• Transmission shafts

• Crankshafts

• Gears and gear blanks

• Studs, bolts, and connecting rods

• Forged machine components

Forged Products:

1. Heavy Duty Machined Shaft

2. Circle

3. Rings

4. Backup Rolls

5. Gear Blank

6. Heavy Duty Forged Shaft

7. Block

8. Shaft

9. Flat

---

Why Choose Alloy Carbon Steel?

With over 50 years of experience in the iron and steel industry, Alloy Carbon Steel is a trusted stockist, manufacturer, and supplier of premium-grade carbon and alloy steels.

✔ Huge Inventory of Carbon & Alloy Grades
✔ Custom Sizes, Shapes & Processing Available
✔ Competitive Pricing
✔ Fast Delivery Across India

---

Other Steel Grades Available

C45, EN8D, 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, and more.