Steel hexagon 1.7218 / 30XM
Steel hexagon 1.7218 (30XM / 25CrMo4) is a low-alloy structural steel known for its high strength, ductility, and resistance to high temperatures and impact loads. It is widely used in mechanical engineering, automotive, and aerospace industries, as well as in the production of parts that operate under demanding conditions.
General Technical Characteristics
| Parameter | Value |
|---|---|
| Steel Type | Low-alloy structural steel |
| Yield Strength | 500-800 MPa |
| Tensile Strength | 850-1100 MPa |
| Hardness after Quenching | 50-55 HRC |
| Operating Temperature | Up to 500°C |
| Impact Toughness | ≥ 35 J/cm² |
Applications of Steel 1.7218 (30XM / 25CrMo4)
🔹 Engine and transmission parts – crankshafts, connecting rods, gears.
🔹 High-load components – axles, spindles, pins, couplings.
🔹 Automotive and aerospace industry – structural components, suspension parts.
🔹 Hydraulic systems – piston rods, hydraulic cylinders.
🔹 Construction equipment – high-strength bolts, nuts, screws.
Key Features of Steel 1.7218 (30XM / 25CrMo4)
✅ High strength – ideal for components subjected to dynamic loads.
✅ Excellent impact toughness – withstands shocks and vibrations without cracking.
✅ Stable mechanical properties – retains characteristics at high temperatures.
✅ Good weldability (with preheating) – enables complex structure assembly.
✅ Easy machinability – well-suited for mechanical and heat treatment.
Chemical Composition of Steel 1.7218 (30XM / 25CrMo4)
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.22-0.29 |
| Silicon (Si) | 0.15-0.35 |
| Manganese (Mn) | 0.60-0.90 |
| Chromium (Cr) | 0.90-1.20 |
| Molybdenum (Mo) | 0.15-0.30 |
| Sulfur (S) | ≤ 0.035 |
| Phosphorus (P) | ≤ 0.035 |
Mechanical Properties of Steel 1.7218 (30XM / 25CrMo4)
| Property | Value |
|---|---|
| Yield Strength | 500-800 MPa |
| Tensile Strength | 850-1100 MPa |
| Elongation | 10-15% |
| Elastic Modulus | 210 GPa |
| Hardness after Quenching | 50-55 HRC |
| Impact Toughness | ≥ 35 J/cm² |
Advantages of Steel hexagon 1.7218 (30XM / 25CrMo4)
✔ High strength and durability – withstands extreme loads.
✔ Heat resistance – suitable for engines and industrial machinery.
✔ Good weldability – allows for assembling complex structures.
✔ Excellent impact toughness – performs well under vibration and impact conditions.
✔ Easy to machine – suitable for cutting, grinding, and machining.
🔹 Conclusion:
Steel 1.7218 (30XM / 25CrMo4) is an excellent choice for manufacturing high-strength mechanical components, hydraulic parts, automotive and aerospace structures, as well as elements exposed to high loads and elevated temperatures.
Delivery forms of steel hexagon 1.7218 / 30ХМ
Steel circles | |
| Steel grades | Dimensions supplied (mm) |
| Steel hexagon 1.7218 / 30ХМ | 6 – 100 |