EN19 Alloy Steel – High Strength, High Performance

EN19 is a high-tensile alloy steel known for its excellent strength, shock resistance, and wear performance. With a perfect balance of toughness and ductility, it is widely used in industries that require components to perform under extreme stress and heavy load—such as in gear systems, engine parts, and heavy-duty shafts.

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What is EN19 Also Known As?

EN19 is internationally recognized and goes by multiple standards including AISI 4140, 709M40, and 42CrMo2. It’s typically supplied in annealed, rolled, or normalized conditions, depending on the application needs. At Zentech, we offer EN19 in various forms like round bars, square bars, and flat sections, ready for immediate dispatch from our stock.

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EN19 Chemical Composition

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Physical & Mechanical Properties

• Density: 8.08 g/cm³ or 0.292 lb/in³

• Melting Point: Approx. 1425°C / 2600°F

• Excellent wear and fatigue resistance

• Suitable for heat treatment and case hardening

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Heat Treatment & Hardening

• Annealing: 845°C followed by oil quenching

• Normalizing: Heated at 913°C and air-cooled

• Hardening: Achieved through cold working or heating and quenching

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Forging Range

EN19 can be forged within the temperature range of 926°C to 1205°C, allowing for excellent structural integrity and machinability.

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Available Forms & Sizes

EN19 Steel Pipes

• Outer Diameter (OD): Up to 550mm

• Inner Diameter (ID): Up to 400mm

• Length: Up to 6000mm

EN19 Flat Bars

• Rolled Flat Bar: Thickness up to 50mm, Width up to 455mm

• Forged Flat Bar: Thickness up to 305mm, Width up to 455mm

EN19 Round Bars

• Rolled: 16mm to 250mm

• Heavy Forged: 200mm to 450mm

• Heavy Machined: 260mm to 620mm

EN19 Alloy Steel Plates (42CrMo4)

• Width: Up to 2000mm

• Length: Up to 6300mm

• Thickness: Up to 120mm

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Common Applications

EN19 is highly suitable for making:

• Gears

• Shafts

• Pinions

• Spindles

• Components in Oil & Gas, Automotive, and Heavy Engineering

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EN 19 Steel

Forged Forms Available:

1. Shaft

2. Circle

3. Rings

4. Backup Rolls

5. Gear Blank

6. Die Block

7. Block

8. Flat

9. Round

Other Grades Available

We also stock and supply a wide range of steel grades including:
C45, EN8, EN9, EN24, EN31, EN36C, EN41B, EN47, EN353, IS2062, 42CrMo4, HCHCR, OHNS, D2, D3, H11, H13, M2, M35, M42, 1.2714, P20, SAE 4340, 20MnCr5, CK45, SKD-11, and more.

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Serving Industrial Hubs Across India

We deliver across major cities and industrial zones in:

Uttar Pradesh

Kanpur, Lucknow, Noida, Ghaziabad, Agra, Meerut, Varanasi, Prayagraj, Bareilly, Moradabad, Aligarh, Gorakhpur, and more.

Rajasthan

Jaipur, Jodhpur, Kota, Bhiwadi, Udaipur, Bhilwara, Alwar, Ajmer, Bharatpur, Sikar, Sri Ganganagar, and others.

Haryana

Gurgaon, Faridabad, Panipat, Yamunanagar, Rohtak, Karnal, Hisar, Ambala, Sirsa, and surrounding regions.