Ventura Alloy And Steels Private Limited

EN Series Steel Round Bars

Description:
EN Series Steel Round Bars are high-quality, carbon and alloy steel bars manufactured to meet the European Norm (EN) standards. These bars are widely used in engineering, automotive, tool-making, and industrial applications due to their superior mechanical properties, uniform composition, and consistent dimensional accuracy.

Material Grades:

• Common grades include EN8, EN9, EN19, EN24, EN31, and others depending on customer requirements.

• Available in mild steel, medium carbon, and high-strength alloy steel variants.

Key Features:

• High Strength & Toughness: Suitable for components exposed to heavy loads and wear.

• Excellent Machinability: Ideal for precision machining, turning, and threading.

• Heat Treatable: Can be normalized, hardened, tempered, or annealed to achieve desired properties.

• Corrosion Resistance: Certain EN grades provide moderate resistance to oxidation and wear.

• Dimensional Accuracy: Supplied in precise diameters and lengths as per EN standards.

Applications:

• Shafts, axles, and pins

• Gears, bolts, and nuts

• Automotive and industrial machinery components

• Engineering and fabrication projects

Forms & Sizes:

• Round bars: Diameter from 6 mm to 200 mm (custom sizes available)

• Lengths: Typically 3 m to 6 m, can be cut to order

• Surface Finish: Hot-rolled, cold-rolled, or ground finish

EN31 Bearing Steel Round Bars – Material Description

EN31 is a high-carbon chromium alloy steel specifically designed for bearings and high-wear applications. It is known for its high hardness, excellent wear resistance, high fatigue strength, and dimensional stability after heat treatment. EN31 is the preferred grade for manufacturing anti-friction bearings, precision shafts, spindles, and heavy-duty machine components.

It is equivalent to AISI 52100 / SAE 52100 / 100Cr6 / JIS SUJ2, widely trusted in bearing and automotive industries worldwide.

Chemical Composition (Typical %) Mechanical Properties Available Sizes of Round Bars

• Hot Rolled / As Rolled: 16 mm – 200 mm dia

• Peeled / Turned / Ground: 12 mm – 120 mm dia (tight tolerances, bright surface)

• Forged Round Bars: 150 mm and above for custom shafts and heavy-duty parts

Heat Treatment

• Annealed Condition: Soft, machinable (~200 HB)

• Hardened & Tempered: Quench at 840–860°C (oil or polymer), temper at 150–200°C to 58–62 HRC

• Stress Relieving: After rough machining, before final hardening

Key Features

• Superior wear resistance and hardness

• Excellent toughness and fatigue strength

• Maintains dimensional stability after heat treatment

• Can be precision-machined in annealed condition

Applications

• Bearings: Ball, roller, needle bearings, bearing races

• Automotive: Gear pins, shafts, CV joints, engine components

• Tooling & Dies: Spindles, punches, wear-resistant parts

• Hydraulic & Machinery: Piston rods, guide pins, heavy-duty shafts

Equivalent Grades

• AISI / SAE: 52100

• DIN: 100Cr6

• JIS: SUJ2

• IS: EN31 / 4398

EN31 Round Bars – Material Description

EN31 is a high-carbon chromium alloy steel known for its high hardness, excellent wear resistance, and high fatigue strength. It retains dimensional stability after heat treatment and is widely used for high-precision, wear-resistant components such as bearings and shafts.

Equivalent to AISI 52100 / SAE 52100 / 100Cr6, EN31 is typically supplied in round bar form for machining into critical parts requiring superior surface hardness and durability.

Chemical Composition (Typical %) Available Sizes of Round Bars

Hot Rolled (Annealed) Round Bars

• Sizes: 16 mm to 200 mm dia

• Condition: Annealed (for machining and further hardening)

Peeled / Turned / Ground Round Bars

• Sizes: 12 mm to 120 mm dia

• Condition: Peeled, straightened, and tight tolerance

• Surface Finish: Bright (suitable for precision components)

Forged Round Bars

• Sizes: 150 mm and above

• Application: Custom sizes for shafts and heavy machinery parts

Mechanical Properties (After Heat Treatment) Heat Treatment Response

Annealed Condition:

• Soft for machining (approx. 200 HB)

Hardened & Tempered Condition:

• Quenching at 840–860°C in oil or polymer

• Tempering at 150–200°C to achieve 60–65 HRC

Stress Relieving:

• Done after rough machining and before final hardening

Typical Applications

Bearings:

• Ball & roller bearings, bearing races, needle bearings

Automotive:

• Gear pins, transmission shafts, CV joints, engine parts

Tooling & Dies:

• Punches, spindles, wear-resistant tools

Machinery & Hydraulics:

• Piston rods, guide pins, heavy-duty shafts

Product Condition & Supply Form Key Advantages

✅ Excellent hardness and wear resistance
✅ High fatigue and impact strength
✅ Good machinability in annealed condition
✅ Trusted, industry-standard grade for bearing and automotive applications

100Cr6 Bearing Steel Round Bars – Material Description

100Cr6 is a high-carbon chromium alloy steel designed for bearings and high-wear applications. It is renowned for its high hardness, excellent wear resistance, high fatigue strength, and dimensional stability after heat treatment. This grade is widely used in ball and roller bearings, precision shafts, spindles, and heavy-duty machine components.

It is equivalent to EN31 / AISI 52100 / SAE 52100 / JIS SUJ2, a globally trusted grade in bearing and automotive industries.

Chemical Composition (Typical %) Mechanical Properties Available Sizes of Round Bars

• Hot Rolled / As Rolled: 16 mm – 200 mm dia

• Peeled / Turned / Ground: 12 mm – 120 mm dia (tight tolerances, bright surface)

• Forged Round Bars: 150 mm and above for custom shafts and heavy-duty parts

Heat Treatment

• Annealed Condition: Soft, machinable (~200 HB)

• Hardened & Tempered: Quench at 840–860°C (oil or polymer), temper at 150–200°C to 58–62 HRC

• Stress Relieving: After rough machining, before final hardening

Key Features

• High wear resistance and surface hardness

• Excellent toughness and fatigue strength

• Maintains dimensional stability after heat treatment

• Machinable in annealed condition

Applications

• Bearings: Ball, roller, needle bearings, bearing races

• Automotive: Gear pins, shafts, CV joints, engine components

• Tooling & Dies: Spindles, punches, wear-resistant parts

• Hydraulic & Machinery: Piston rods, guide pins, heavy-duty shafts

Equivalent Grades

• EN / IS: EN31 / 100Cr6

• AISI / SAE: 52100

• JIS: SUJ2