Steel Hexagon 1.8159 / 51CrV4 / 50ХГФА
Steel hexagon 1.8159 (51CrV4 / 50ХГФА) is an alloyed spring steel characterized by high strength, wear resistance, elasticity, and impact toughness. Due to its chromium, vanadium, and silicon content, this steel is ideal for manufacturing spring and impact-resistant parts in the automotive, mechanical engineering, and construction industries.
General Technical Characteristics
| Parameter | Value |
|---|---|
| Steel Type | Alloyed spring steel |
| Yield Strength | 800-1000 MPa |
| Tensile Strength | 1100-1400 MPa |
| Hardness After Heat Treatment | 50-56 HRC |
| Operating Temperature | Up to 300°C |
| Elastic Modulus | 210 GPa |
| Impact Toughness | ≥ 40 J/cm² |
Applications of Steel 1.8159 (51CrV4 / 50ХГФА)
🔹 Automotive Industry – leaf springs, stabilizers, torsion bars, valve springs.
🔹 Mechanical Engineering – impact-resistant tools, high-load shafts, couplings.
🔹 Construction Equipment – fastening mechanisms, brackets, gears.
🔹 Tool Industry – knives, dies, cutters, tools operating under high loads.
🔹 High-Stiffness Springs – in the energy and railway sectors.
Key Features of Steel 1.8159 (51CrV4 / 50ХГФА)
✅ High elasticity – allows the material to retain shape after deformation.
✅ High impact toughness – resists cracking under shocks and loads.
✅ Excellent wear resistance – durable even under intensive use.
✅ Good hardenability – ensures uniform hardness distribution across the cross-section.
✅ Stable mechanical properties – even at elevated temperatures.
Chemical Composition of Steel 1.8159 (51CrV4 / 50ХГФА)
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.47-0.55 |
| Silicon (Si) | 0.15-0.40 |
| Manganese (Mn) | 0.70-1.10 |
| Chromium (Cr) | 0.90-1.20 |
| Vanadium (V) | 0.10-0.25 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.035 |
Mechanical Properties of Steel 1.8159 (51CrV4 / 50ХГФА)
| Property | Value |
|---|---|
| Yield Strength | 800-1000 MPa |
| Tensile Strength | 1100-1400 MPa |
| Elongation | 10-14% |
| Elastic Modulus | 210 GPa |
| Hardness After Heat Treatment | 50-56 HRC |
| Impact Toughness | ≥ 40 J/cm² |
Advantages of Steel Hexagon 1.8159 (51CrV4 / 50ХГФА)
✔ Excellent combination of strength and ductility – ensures durability of components.
✔ High impact toughness – ideal for parts exposed to shocks and heavy loads.
✔ Superior wear resistance – suitable for components operating in harsh conditions.
✔ Capable of hardening and tempering – allows fine-tuning of mechanical properties.
✔ High elasticity – the best choice for spring mechanisms and tools.
Delivery forms of steel hexagon 1.8159 / 50HGFA
Steel hexagons | |
| Steel grades | Dimensions supplied (mm) |
Steel hexagon 1.8159 / 50HGFA | 6 – 100 |