EN19 / AISI 4140 Alloy Steel Round Bars
| Specification | Details |
| Material Grade | EN19 / AISI 4140 / 42CrMo4 |
| Type | High Tensile Alloy Steel |
| Shape | Round Bars (Hot Rolled / Forged) |
| Finish | Black, Peeled, or Polished (Bright Bar) |
| Condition | Annealed / Normalized / Hardened & Tempered (QT) |
| Hardness (QT) | Typically 28–34 HRC (Customizable) |
| Key Alloying Elements | Chromium (Cr) & Molybdenum (Mo) |
| Technique | Hot Rolled / Cold Drawn |
| Availability | In Stock (Various Diameters) |
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Description
Supplied & Exported by Titanava International
Titanava International is a premier supplier of high-grade engineering steels necessary for heavy machinery and critical infrastructure. We export EN19 Alloy Steel, a high-quality medium carbon steel fortified with Chromium and Molybdenum. Known globally as AISI 4140 or 42CrMo4, this grade is the backbone of the automotive, oil & gas, and power transmission industries.Titanava International supplies this material in various conditions (Annealed, Normalized, or Hardened & Tempered) to meet the rigorous demands of high-stress and shock-loading applications.
Product Highlights
| Specification | Details |
| Material Grade | EN19 / AISI 4140 / 42CrMo4 |
| Type | High Tensile Alloy Steel |
| Shape | Round Bars (Hot Rolled / Forged) |
| Finish | Black, Peeled, or Polished (Bright Bar) |
| Condition | Annealed / Normalized / Hardened & Tempered (QT) |
| Hardness (QT) | Typically 28–34 HRC (Customizable) |
| Key Alloying Elements | Chromium (Cr) & Molybdenum (Mo) |
| Technique | Hot Rolled / Cold Drawn |
| Availability | In Stock (Various Diameters) |
Why Choose EN19 Alloy Steel from Titanava International?
Titanava International recommends EN19 for components that require more strength than standard mild steel can provide.
1. Superior Strength & Toughness
The addition of Chromium and Molybdenum gives EN19 exceptional depth of hardenability.3 It offers a superior combination of high tensile strength and ductility. Unlike standard carbon steel, it resists fracturing under high stress, making it safe for critical load-bearing parts.
2. Excellent Shock & Impact Resistance
Components made from EN19 are designed to withstand heavy shock and dynamic loads.4 This makes it the material of choice for Titanava International’s clients in the heavy construction equipment sector (e.g., crane shafts, excavator pins).
3. Versatile Heat Treatment
We supply EN19 that responds well to heat treatment.5 It can be surface-hardened (induction hardened) to achieve high wear resistance on the surface while maintaining a tough core.This is vital for gears and shafts that experience constant friction.
4. High Fatigue Limit
For parts that rotate or cycle millions of times (like axles or crankshafts), fatigue failure is a risk. EN19 provides a high fatigue limit, ensuring long service life for machinery components.
Key Applications & Uses
Titanava International exports EN19 primarily for “Heavy Engineering” and “Construction Equipment” manufacturing:
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Automotive: Axle shafts, crankshafts, connecting rods, and steering knuckles.
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Oil & Gas: High-tensile bolts, studs, and drilling collars subjected to high pressure.
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Construction Machinery: Pins for excavators, crane gears, and bulldozer blades.
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Power Transmission: Gears, pinions, and spindles.
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General Engineering: High-strength studs and bolts for structural steel connections.
Top 10 Export Countries
Titanava International supplies this engineering-grade steel to industrial hubs globally:
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Germany (Machinery manufacturing)
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United Arab Emirates (UAE) (Oil & Gas sector)
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United States (USA)
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Saudi Arabia
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Italy
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Qatar
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South Africa (Mining equipment)
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Turkey
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Canada
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Malaysia
Frequently Asked Questions (FAQs)
Q: Is EN19 the same as Stainless Steel?
A: No. EN19 is an Alloy Steel.13 While it is stronger than mild steel, it does not have enough Chromium to be “Stainless” (rust-proof). It will rust if left unprotected. For corrosion resistance, it requires painting, plating, or greasing.
Q: What is the difference between EN19 and EN24?
A: EN19 (AISI 4140) is an excellent general-purpose high-tensile steel. EN24 (AISI 4340) contains Nickel, making it even tougher and suitable for even larger sections or higher stress, but it is more expensive.14 Titanava International can supply both depending on your budget and strength requirements.
Q: Can I weld EN19 steel?
A: Yes, but with caution. Because of its high hardenability, it can crack if welded improperly. We recommend pre-heating the material before welding and stress-relieving it afterward.
Q: What condition is the steel supplied in?
A: Titanava International typically supplies it in the “Annealed” condition (softer, easier to machine) or “Hardened and Tempered” (ready to use with high strength). Please specify your requirement when ordering.
Q: What sizes are available?
A: We stock a wide range of diameters, typically from 10mm up to 300mm in round bars.
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