EN Series Steel
Our range of products include en 31 bearing steel and 100cr6 steel.
En 31 Bearing Steel
₹ 77 / Kg Get Latest Price
| Material Grade | EN 31 |
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 %)| Element | Range |
|---|---|
| Carbon (C) | 0.95 – 1.10% |
| Chromium (Cr) | 1.00 – 1.60% |
| Manganese (Mn) | 0.30 – 0.75% |
| Silicon (Si) | 0.10 – 0.35% |
| Sulphur (S) | ≤ 0.040% |
| Phosphorus (P) | ≤ 0.040% |
| Iron (Fe) | Balance |
| Property | Typical Value |
|---|---|
| Hardness (Annealed) | 200 – 250 HB |
| Hardness (Hardened & Tempered) | 58 – 62 HRC |
| Tensile Strength (Annealed) | 750 – 1000 MPa |
| Tensile Strength (Hardened & Tempered) | Up to 2000 MPa |
| Fatigue Strength | High |
| Density | 7.85 g/cm³ |
| Elongation | ~10 – 15% |
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Hot Rolled / As Rolled: 16 mm – 200 mm dia
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Peeled / Turned / Ground: 12 mm – 120 mm dia (tight tolerances, bright surface)
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Forged Round Bars: 150 mm and above for custom shafts and heavy-duty parts
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Annealed Condition: Soft, machinable (~200 HB)
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Hardened & Tempered: Quench at 840–860°C (oil or polymer), temper at 150–200°C to 58–62 HRC
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Stress Relieving: After rough machining, before final hardening
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Superior wear resistance and hardness
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Excellent toughness and fatigue strength
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Maintains dimensional stability after heat treatment
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Can be precision-machined in annealed condition
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Bearings: Ball, roller, needle bearings, bearing races
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Automotive: Gear pins, shafts, CV joints, engine components
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Tooling & Dies: Spindles, punches, wear-resistant parts
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Hydraulic & Machinery: Piston rods, guide pins, heavy-duty shafts
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AISI / SAE: 52100
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DIN: 100Cr6
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JIS: SUJ2
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IS: EN31 / 4398
100cr6 Steel
₹ 77 / Kg Get Latest Price
| Material Grade | EN 31 |
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 %)| Element | Range |
|---|---|
| Carbon (C) | 0.95 – 1.10% |
| Chromium (Cr) | 1.00 – 1.60% |
| Manganese (Mn) | 0.30 – 0.75% |
| Silicon (Si) | 0.10 – 0.35% |
| Sulphur (S) | ≤ 0.040% |
| Phosphorus (P) | ≤ 0.040% |
| Iron (Fe) | Balance |
| Property | Typical Value |
|---|---|
| Hardness (Annealed) | 200 – 250 HB |
| Hardness (Hardened & Tempered) | 58 – 62 HRC |
| Tensile Strength (Annealed) | 750 – 1000 MPa |
| Tensile Strength (Hardened & Tempered) | Up to 2000 MPa |
| Fatigue Strength | High |
| Density | 7.85 g/cm³ |
| Elongation | ~10 – 15% |
-
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
-
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
-
High wear resistance and surface hardness
-
Excellent toughness and fatigue strength
-
Maintains dimensional stability after heat treatment
-
Machinable in annealed condition
-
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
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EN / IS: EN31 / 100Cr6
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AISI / SAE: 52100
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JIS: SUJ2
Contact Us
Aashish Shah (Chairman & Managing Director)
Ventura Alloy And Steels Private Limited
1201 / 1202, Ghanshyam Enclave Premises Co. OP Soc Ltd, Plot No 856, Survey No 33, New Link Road, Kandivali West
Mumbai - 400067, Maharashtra, India