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:
Transmission shafts
Gears and gear shafts
Axles
Spindles
Bolts and studs
Connecting rods
High-stress machine parts
Automotive and agricultural equipment
Powertrain components
Its strength, toughness, and wear resistance make it ideal for forging, machining, and heat treatment.
🔧 Machinability, Weldability & Heat Treatment
Machinability: EN19 offers good machinability in normalized and tempered condition.
Weldability: Fair – Preheating and post-weld heat treatment are recommended.
Heat Treatment:
Hardening: Oil quenching at ~850°C
Tempering: ~500–650°C depending on strength/toughness requirements
Can be induction or flame hardened
🧱 EN19 Steel Bars from Steelmet Industries
At Steelmet Industries, we offer EN19 steel in various forms:
Bright Bars: Drawn, Peeled, Ground
Hot Rolled Bars: Rounds, Squares, Flats
Custom Shapes: Round-corner squares, special flats, D-bars, hexes, and more
Size Range:
Rounds: 12 mm to 90 mm
Flats/Squares/Hex: As per customer requirement
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?
Trusted source of graded alloy steels with full traceability
Custom lengths, profiles, and finishes available
Reliable deliveries and consistent quality
Vacuum Degassed (VD) Route options available for critical applications
Experienced in fulfilling OEM, forging, machining, and export orders
📜 Certifications & Compliance
All EN19 bars are supplied with:
Test Certificates (TC)
Dimensional reports on request
Optional third-party inspection
Conformance to IS, EN, SAE and DIN standards
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.
