EN27 Alloy Steel Round Bars

EN27 is a high-strength nickel-chromium-molybdenum alloy steel known for its excellent combination of toughness, wear resistance, and high tensile strength.

Details Regarding EN27 Alloy Steel Round Bars:

Chemical Composition:

Mechanical Properties:

• Tensile Strength: 850-1000 MPa
• Yield Strength: 650-800 MPa
• Elongation: 13-18% (in 50 mm)
• Hardness: 280-330 HB

Physical Properties:

• Density: ~7.85 g/cm³
• Melting Point: ~1420-1470°C

Heat Treatment:

EN27 alloy steel typically undergoes various heat treatment processes to achieve desired mechanical properties:

Annealing: Heating the material to around 850-900°C and then slowly cooling it in the furnace to relieve internal stresses and improve machinability.

Normalizing: Heating the material to around 880-920°C, followed by air cooling to room temperature. This process refines the grain structure and enhances the mechanical properties.

Hardening: Heating the material to a temperature range of 850-900°C and then quenching it in oil or water to achieve high hardness and strength.

Tempering: Reheating the hardened material to a temperature range of 540-680°C and holding it for a specific time to reduce internal stresses and improve toughness without significantly sacrificing hardness.