EN47 is a high-carbon, chromium–vanadium alloy steel known for its excellent strength, toughness, and wear resistance. It is primarily used in springs, heavy-duty shafts, and components subjected to dynamic or repetitive loads. EN47 offers superior performance compared to standard carbon steels like EN8 or EN9, especially in applications requiring elasticity, fatigue resistance, and dimensional stability.

Key Properties of EN47

1. High Tensile Strength & Hardness

a. Typical tensile strength: 900–1100 MPa
b. Hardened and tempered: 45–55 HRC
c. Ideal for high-strength, wear-resistant applications

2. Excellent Toughness & Fatigue Resistance

High toughness and resilience under repeated or shock loading make it ideal for springs, axles, and mechanical linkages.

3. Good Wear Resistance

Chromium and vanadium improve surface hardness, enabling the steel to resist abrasion and mechanical wear.

4. Heat Treatable

EN47 responds well to:
a. Quenching and tempering
b. Flame or induction hardening

5. Good Machinability (Annealed Condition)

Machinable before hardening; becomes harder to machine after heat treatment.

6. Moderate Weldability

Welding is possible but requires preheating and post-weld tempering due to high carbon content.

Typical Applications of EN47 Steel

1. Automotive and industrial leaf springs and coil springs
2. Shafts, axles, and spindles
3. Heavy-duty gears, pinions, and couplings
4. Tooling components under repetitive stress or load
5. Agricultural machinery parts
6. Rollers, levers, and press components
7. Mechanical linkages and connecting rods

Why Choose EN47 Steel?

EN47 is an ideal alloy steel for high-load, high-fatigue applications, offering strength, toughness, and excellent wear resistance. Its ability to maintain mechanical performance under repeated stress makes it the preferred choice for springs, shafts, and heavy-duty dynamic components.