CM247 LC

UNS N00247 nickel_superalloy
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Low-carbon derivative of MAR-M 247 optimised for directional solidification and single-crystal casting. Reduced C lowers γ/γ' eutectic fraction and improves fatigue life.

Applicable Standards

  • AMS 5593 (basis)
  • Cannon Muskegon spec

Composition Ranges (wt %)

Element Min (%) Max (%) Typical Range
Ni 56.0 100.0 ~78.0
Cr 8.0 9.0 ~8.5
Co 9.0 10.0 ~9.5
W 9.5 10.5 ~10.0
Al 5.4 5.7 ~5.55
Ta 3.1 3.5 ~3.3
Hf 1.3 1.6 ~1.45
C — 0.07 ~0.04
Ni 56.0–100.0% Cr 8.0–9.0% Co 9.0–10.0% W 9.5–10.5% Al 5.4–5.7% Ta 3.1–3.5% Hf 1.3–1.6% C 0.0–0.07%

Typical Applications

  • DS turbine blades
  • SX blades
  • Industrial turbine vanes
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