EN19 steel, also known as AISI 4140, is a high-quality alloy steel grade with excellent mechanical properties, making it one of the most widely used engineering steels for demanding applications. At Steelmet Industries, we supply EN19 steel bars in hot rolled, bright bar, peeled, and custom-shaped forms, offering high dimensional accuracy and complete traceability.
📊 Chemical Composition of EN19 Steel
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.36 – 0.44 |
| Manganese (Mn) | 0.60 – 0.90 |
| Silicon (Si) | 0.10 – 0.40 |
| Chromium (Cr) | 0.90 – 1.50 |
| Molybdenum (Mo) | 0.15 – 0.30 |
| Sulphur (S) | ≤ 0.035 |
| Phosphorus (P) | ≤ 0.035 |
🧪 Mechanical Properties (Typical Values)
| Property | Value |
|---|---|
| Tensile Strength | 850–1000 MPa |
| Yield Strength | 680–800 MPa |
| Elongation | 16–18% |
| Hardness | 248–302 BHN |
| Impact Strength | High (suitable for shock loading) |
Note: Values vary depending on heat treatment and section size.
🔁 Equivalent Grades of EN19
| Standard | Equivalent Grade |
|---|---|
| AISI/SAE | 4140 |
| DIN/EN | 42CrMo4 |
| IS (India) | 40Cr4Mo3 |
| JIS | SCM440 |
| BS | 708M40 |
⚙️ Applications of EN19 Steel
EN19 is a versatile alloy steel used in:
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Transmission shafts
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Gears and gear shafts
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Axles
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Spindles
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Bolts and studs
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Connecting rods
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High-stress machine parts
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Automotive and agricultural equipment
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Powertrain components
Its strength, toughness, and wear resistance make it ideal for forging, machining, and heat treatment.
🔧 Machinability, Weldability & Heat Treatment
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Machinability: EN19 offers good machinability in normalized and tempered condition.
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Weldability: Fair – Preheating and post-weld heat treatment are recommended.
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Heat Treatment:
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Hardening: Oil quenching at ~850°C
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Tempering: ~500–650°C depending on strength/toughness requirements
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Can be induction or flame hardened
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🧱 EN19 Steel Bars from Steelmet Industries
At Steelmet Industries, we offer EN19 steel in various forms:
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Bright Bars: Drawn, Peeled, Ground
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Hot Rolled Bars: Rounds, Squares, Flats
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Custom Shapes: Round-corner squares, special flats, D-bars, hexes, and more
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Size Range:
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Rounds: 12 mm to 90 mm
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Flats/Squares/Hex: As per customer requirement
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Tolerances: ISO H9/H10/H11 as needed
Our EN19 bars are supplied in heat-treated, normalised, or as rolled conditions with tight dimensional accuracy and NABL-certified testing support.
🏭 Why Choose Steelmet Industries for EN19?
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Trusted source of graded alloy steels with full traceability
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Custom lengths, profiles, and finishes available
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Reliable deliveries and consistent quality
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Vacuum Degassed (VD) Route options available for critical applications
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Experienced in fulfilling OEM, forging, machining, and export orders
📜 Certifications & Compliance
All EN19 bars are supplied with:
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Test Certificates (TC)
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Dimensional reports on request
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Optional third-party inspection
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Conformance to IS, EN, SAE and DIN standards
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Support from NABL-accredited laboratories for chemical and mechanical testing
📞 Get in Touch
Looking for reliable EN19 steel bars with consistent quality?
📞 Contact Steelmet Industries today for pricing, delivery timelines, or bulk orders.
🔗 Visit: https://www.steelmet.in
📩 Or send your enquiry through our website contact form.
