Waspaloy CR® Round Bar - Cold-Reduced - AMS 5708

Waspaloy CR® round bar cold-reduced AMS 5708 (Type 1 is capable of AMS 5709) is a nickel-based alloy containing chromium and cobalt typically used in aircraft fasteners where high strength up to 1500° F and oxidation resistance up to 1750° F is required. Waspaloy CR® round bar is multiple melted, usually with either a vacuum induction melt (VIM) followed by a vacuum arc remelt (VAR), or a vacuum induction melt (VIM) followed by an electroslag remelt (ESR).

Waspaloy CR® annealed cold-worked ground hardness max. 44 HRC

Waspaloy CR® Inventory Size Ranges


0.260"- 0.4475"

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Standard Inventory Specifications

  • AMS 5708 Type 1
  • AMS 5709 (Capable of)
  • UNS NO7002

Other industry standards we comply with:

  • PWA LCS 
  • GE Aircraft Engine (GT193)
  • GE Aviation S-SPEC-35 AeDMS S-400
  • RR SABRe Edition 2
  • DFARS Compliant
  • Fairchild MS305
  • EN 2.4654


Common Trade Names

  • Waspaloy®

Common Applications of Waspaloy CR®

  • Aerospace fasteners

Chemical Composition

Chemical Composition of Waspaloy CR®
Element Percent by Weight
C Carbon 0.02 - 0.10%
Mn Manganese 0.10% max
Si Silicon 0.15% max
P Phosphorous 0.015% max
S Sulfur 0.015% max
Cr Chromium 18.00 - 21.00%
Co Cobalt 12.00 - 15.00%
Mo Molybdenum 3.50 - 5.00%
Ti Titanium 2.75 - 3.25%
Al Aluminum 1.20 - 1.60%
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Mechanical Properties of Waspaloy CR®

Property Value
Density 0.296 lbs/in3, 8.19 g/cm3
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Waspaloy® is a registered trademark of Pratt & Whitney, a United Technologies Company.

*The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.