25CrMo4 / 1.7218 Alloy Steel

Alloyed structural steel 1.7218 (25CrMo4) is a chromium-molybdenum alloy with high strength and ductility characteristics. The material features excellent hardenability, good weldability, and the ability to withstand significant mechanical loads.

Technical Specifications

Steel round bar 1.7218 is characterized by an optimal combination of strength, toughness, and ductility. The material is easily machinable and demonstrates high hardenability. After heat treatment, the steel acquires improved mechanical properties while maintaining a tough core.

Chemical Composition (%)

• Carbon (C): 0.22-0.29
• Chromium (Cr): 0.90-1.20
• Molybdenum (Mo): 0.15-0.30
• Manganese (Mn): 0.60-0.90
• Silicon (Si): 0.15-0.35
• Phosphorus (P): ≤0.025
• Sulfur (S): ≤0.025
• Iron (Fe): balance

Mechanical Properties

• Ultimate Tensile Strength: 700-850 MPa
• Yield Strength: ≥500 MPa
• Elongation: ≥14%
• Hardness: 207-255 HB
• Impact Strength KCV: ≥60 J/cm²
• Elastic Modulus: 210 GPa

Applications

Steel round bar 1.7218 is widely used in the following industries:

• Mechanical engineering (shafts, axles, gears, couplings)
• Automotive industry (transmission parts, crankshafts)
• Mining equipment manufacturing (high-strength components)
• General engineering (heavy-duty fasteners)
• Construction equipment manufacturing (critical mechanism parts)

Features

Steel 1.7218 offers the following advantages:

• High strength and ductility after heat treatment
• Excellent hardenability
• Good weldability with preheating
• High resistance to dynamic loads
• Good machinability
• Ability to operate at elevated temperatures
• High wear resistance after appropriate heat treatment

Steel round bar 1.7218 is supplied in accordance with international quality standards. Each batch is accompanied by a quality certificate confirming the chemical composition and mechanical properties of the material. Various diameters and lengths are available according to customer requirements.

The material can be supplied either in normalized condition or in heat-treated condition. Upon customer request, delivery with specific mechanical properties after special heat treatment is possible.

To place an order for 1.7218 round bar or obtain additional technical information, please contact our specialists.

Forms made of steel 1.7218 / 25CrMo4