AISI AISI8615 Nickel Chromium Molybdenum

What is AISI8615?

AISI8615 steel is an AISI/SAE standard alloy steel with nickel chromium molybdenum. This comprehensive guide covers chemical composition, mechanical properties, and machining characteristics per AISI/SAE standards.

Chemical Composition

Element Content (%) Standard
C 0.12-0.19 ASTM/GB
Mn 0.35-0.65 ASTM/GB
P ≤0.035 ASTM/GB
S ≤0.035 ASTM/GB
Si 0.17-0.37 ASTM/GB
Fe Balance ASTM/GB

Mechanical Properties

Property Value Standard
Tensile Strength ≥520 MPa AISI/SAE
Yield Strength ≥360 MPa AISI/SAE
Elongation ≥18% AISI/SAE
Hardness 175 HV HV
Density 7.85 g/cm³ 20°C

Key Features

  • High strength and toughness
  • Good hardenability
  • Suitable for heat treatment
  • Good machinability in annealed condition
  • Widely used in automotive and aerospace

Applications

  • Automotive components
  • Aerospace parts
  • High-strength structural parts
  • Gear and shaft components

Machinability

AISI8615 steel has good machinability. Recommended: Carbide tools, cutting speed 80-150 m/min, feed 0.15-0.30 mm/rev.

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