AISI AISI8717 Nickel Chromium Molybdenum

What is AISI8717?

AISI8717 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 0.15-0.20 AISI/SAE
Ni 0.40-0.70 AISI/SAE
Cr 0.40-0.60 AISI/SAE
Mo 0.20-0.30 AISI/SAE

Mechanical Properties

Property Value Standard
Tensile Strength ≥550 MPa AISI/SAE
Yield Strength ≥380 MPa AISI/SAE
Elongation ≥17% AISI/SAE
Hardness 185 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

AISI8717 steel has good machinability. Recommended: Carbide tools, cutting speed 80-150 m/min, feed 0.15-0.30 mm/rev.

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