EN40B Stainless Steel Round Bars

EN40B is a chromium-molybdenum nitriding steel characterized by its suitability for nitriding which promotes high wear resistance.

The alloy also offers good shock resistance and good toughness and ductility. EN40B Round Bars is supplied in the hardened and tempered ‘T’ condition. It is classed as a nitriding steel.

Chemical Composition:

Mechanical Properties:

• Tensile Strength: Typically 850 - 1000 MPa
• Yield Strength (0.2% offset): Typically 600 - 800 MPa
• Elongation at Break: Typically 10 - 18%
• Hardness (Brinell): Typically 248 - 302 HB

Heat Treatment:

• Annealing: 680°C - 720°C, furnace cooling
• Normalizing: 840°C - 880°C, air cooling
• Hardening: 820°C - 880°C, oil or water quenching
• Tempering: 540°C - 680°C, air cooling

Applications:

• Gears
• Shafts
• Crankshafts
• Axles
• Connecting rods
• Heavy-duty machinery components

EN40B alloy steel round bars are commonly used in applications where high strength, toughness, and wear resistance are required, such as in the automotive, aerospace, and machinery industries.