30CrNiMo8 Alloy Steel Round Bars

30CrNiMo8 Alloy Steel Round Bars hardness is extreme. 30CrNiMo8 Alloy Steel material properties are high tensile strength, hardness and wear and tear resistance.

Parag Steel Corporation  Provides 30CrNiMo8 round bars, forged bars, bright bars and other sizes of premium quality.

Chemical Composition:

Mechanical Properties (Typical values for quenched and tempered condition):

• Tensile Strength: 1000 - 1300 MPa
• Yield Strength (0.2% offset): 800 - 1100 MPa
• Elongation: 10 - 14%
• Impact Toughness (Charpy V-notch): 40 - 60 J/cm²

Physical Properties:

• Density: 7.85 g/cm³
• Melting Point: Approximately 1420°C (2588°F)

Heat Treatment:

• Annealing: Heat to 850-890°C (1562-1634°F), furnace cool at a rate not exceeding 30°C (54°F) per hour to 650°C (1202°F), then cool in air.
• Normalizing: Heat to 870-920°C (1598-1688°F), air cool.
• Quenching: Oil quench from 850-880°C (1562-1616°F) or water quench from 830-860°C (1526-1580°F), followed by tempering.
• Tempering: Temper at a desired temperature depending on the desired properties. Typical tempering temperatures range from 550-650°C (1022-1202°F) for achieving a balance of strength and toughness.