AMS Specification Waspaloy Nickel Alloy

AMS 5709

Waspaloy Nickel Based Stainless Steel – Bars & Forgings

Nickel Alloy, Corrosion and Heat Resistant, Bars and Forgings – 58Ni 19.5Cr 13.5Co 4.3Mo 3.0Ti 1.4Al 0.006B 0.05Zr

AS9100D / ISO 9001

Mill Test Reports

2–4 Week Delivery

877-237-6822

Quick Specification Facts

Spec Number AMS 5709 (AMS5709)

Material Waspaloy Nickel Based Stainless Steel

Spec Type AMS (Aerospace Material Specification)

Category Nickel Alloys / Waspaloy

Composition 58Ni 19.5Cr 13.5Co 4.3Mo 3.0Ti 1.4Al 0.006B 0.05Zr

Condition 1975ºF (1079ºC) Solution, Stabilization, and Precipitation Heat Treated

Product Forms Bars and Forgings

Melt Practice Consumable Electrode or Vacuum Induction Melted

Certification AS9100D / ISO 9001 with full MTR traceability

Specification Overview

AMS 5709 (also referenced as AMS5709) covers Waspaloy, a nickel-based superalloy, in the form of bars and forgings. This specification is issued by SAE International and is widely used in aerospace, defense, and high-temperature industrial applications requiring exceptional strength, oxidation resistance, and creep resistance at elevated temperatures. Waspaloy's nominal composition of 58% Nickel, 19.5% Chromium, 13.5% Cobalt, 4.3% Molybdenum, 3.0% Titanium, 1.4% Aluminum, with trace additions of Boron and Zirconium, provides an outstanding combination of high-temperature mechanical properties and corrosion resistance.

AMS 5709 material is produced by Consumable Electrode or Vacuum Induction Melting to ensure exceptional cleanliness and microstructural uniformity. The material is supplied in the 1975ºF (1079ºC) Solution, Stabilization, and Precipitation Heat Treated condition, which develops the gamma-prime (γ') strengthening precipitates responsible for Waspaloy's excellent elevated-temperature strength. The combination of solid-solution strengthening from chromium, cobalt, and molybdenum with precipitation hardening from the titanium and aluminum additions makes Waspaloy one of the most widely specified nickel superalloys for critical aerospace turbine engine components.

Available Product Forms

Bars

Forgings

AMS 5709 material is supplied as Bars and Forgings per specification requirements. Round bar, hex bar, and forged billet forms are available in a range of diameters and cross-sections. Custom forgings, near-net-shape forgings, and machined blanks are available upon request. Contact our materials specialists for non-standard dimensions or custom forging requirements.

Nominal Chemical Composition

Element	Symbol	Nominal %	Notes
Nickel	Ni	~58% (Balance)	Base metal – provides corrosion resistance and ductility
Chromium	Cr	19.5%	Oxidation and corrosion resistance; solid-solution strengthener
Cobalt	Co	13.5%	Solid-solution strengthener; improves high-temperature strength
Molybdenum	Mo	4.3%	Solid-solution strengthener; improves creep resistance
Titanium	Ti	3.0%	Gamma-prime (γ') forming element; precipitation hardener
Aluminum	Al	1.4%	Gamma-prime (γ') forming element; oxidation resistance
Boron	B	0.006%	Grain boundary strengthener; improves creep and rupture life
Zirconium	Zr	0.05%	Grain boundary strengthener; improves oxidation resistance

Chemical composition ranges are nominal. Consult the current issue of AMS 5709 for precise minimum/maximum requirements. Aero-Vac provides full mill test reports (MTRs) with certified chemistry for every order.

Key Properties & Specification Details

Property / Attribute	Details
Specification Number	AMS 5709 (AMS5709)
Issuing Organization	SAE International (Society of Automotive Engineers)
Material Type	Nickel Alloy – Corrosion and Heat Resistant Bars and Forgings
Alloy Name	Waspaloy (Nickel Based Stainless Steel)
Nominal Composition	58Ni 19.5Cr 13.5Co 4.3Mo 3.0Ti 1.4Al 0.006B 0.05Zr
Melt Practice	Consumable Electrode or Vacuum Induction Melted
Heat Treatment Condition	1975ºF (1079ºC) Solution, Stabilization, and Precipitation Heat Treated
Available Forms	Bars and Forgings
High-Temperature Strength	Excellent – maintains strength and creep resistance up to ~1600ºF (871ºC)
Oxidation Resistance	Very Good – suitable for prolonged exposure to high-temperature oxidizing environments
Machinability	Moderate – requires sharp tooling, low speeds, and high feeds; work hardening tendency
Weldability	Fair – can be welded with pre- and post-weld heat treatment; strain-age cracking risk must be managed
Magnetic Properties	Non-magnetic (austenitic)
Certification Available	AS9100D / ISO 9001, Certificate of Conformance, MTR

Typical Applications

Aerospace Turbine Engines: Jet engine turbine discs, turbine rings, compressor discs, and high-pressure turbine components requiring exceptional strength and creep resistance at temperatures up to 1600ºF (871ºC).

Gas Turbine Components: Blades, vanes, nozzle segments, combustion hardware, and structural rings for both aircraft and industrial gas turbine engines where high-temperature oxidation resistance is critical.

Aerospace Structural Parts: Fasteners, bolts, shafts, and structural forgings for aerospace applications requiring a combination of high strength, corrosion resistance, and elevated-temperature performance.

High-Temperature Industrial Applications: Heat treating fixtures, furnace hardware, petrochemical processing components, and other industrial applications demanding resistance to oxidation and creep at elevated temperatures.

Defense & Space Applications: Missile components, rocket engine parts, and defense systems requiring reliable performance in extreme thermal environments with demanding mechanical property requirements.

Frequently Asked Questions – AMS 5709

What is AMS 5709 and what does it cover?

AMS 5709 (also written AMS5709) is an SAE International aerospace material specification covering Waspaloy, a nickel-based superalloy, in the form of bars and forgings. The nominal chemistry of 58Ni 19.5Cr 13.5Co 4.3Mo 3.0Ti 1.4Al 0.006B 0.05Zr delivers exceptional high-temperature strength, creep resistance, and oxidation resistance. The material is produced by Consumable Electrode or Vacuum Induction Melting and is supplied in the 1975ºF (1079ºC) Solution, Stabilization, and Precipitation Heat Treated condition. It is widely used in aerospace turbine engines, defense, and high-temperature industrial applications where performance at elevated temperatures is critical.

What is Waspaloy and what makes it unique?

Waspaloy is a precipitation-hardened nickel-based superalloy originally developed by Pratt & Whitney for jet engine applications. Its high nickel content combined with chromium and cobalt provides excellent corrosion and oxidation resistance, while molybdenum contributes solid-solution strengthening. The titanium and aluminum additions form the gamma-prime (γ') precipitate phase, which is responsible for the alloy's exceptional strength at elevated temperatures up to approximately 1600ºF (871ºC). Trace additions of boron and zirconium further strengthen grain boundaries, improving creep and stress-rupture life. Waspaloy is considered one of the most important nickel superalloys for critical rotating components in gas turbine engines.

Does Aero-Vac supply AMS 5709 with full mill test reports and certifications?

Yes. All AMS 5709 material supplied by Aero-Vac is fully traceable to mill test reports (MTRs) confirming chemical composition and mechanical properties per the specification. We are AS9100D/ISO 9001 certified with a 99.6% quality rating. Every order ships with certificates of conformance, material certifications, and chemical/mechanical test reports. Electronic delivery of all documentation is available for fast turnaround. If your program requires additional special process certifications, our quality team can coordinate as needed.

What sizes of AMS 5709 bars and forgings does Aero-Vac stock?

Aero-Vac maintains inventory of AMS 5709 Waspaloy in round bar and forging forms across a range of diameters and sizes. We carry standard bar diameters and can provide custom-cut lengths from our in-house processing facility at the Port of Kalama. For custom forgings or near-net-shape requirements, our team can source from our global supplier network. Contact us with your specific size and quantity requirements and we will provide a prompt quote with availability and lead time.

What are the typical lead times for AMS 5709 material?

In-stock AMS 5709 material is typically available for same-day or next-day shipment. For custom-cut or specially processed orders, our standard lead time is 2–4 weeks—significantly faster than the industry average of 8–12 weeks. Specialty forgings or items requiring mill production may require 4–8 weeks depending on quantity and dimensions. We prioritize urgent aerospace and defense requirements and will always provide honest, upfront delivery estimates. Rush processing is available on select items.

Can Aero-Vac provide value-added processing for AMS 5709 Waspaloy material?

Yes. Aero-Vac operates a complete in-house processing facility at our Port of Kalama location. For AMS 5709 Waspaloy bars and forgings, we offer precision saw cutting, surface grinding, turning, milling, and heat treatment services. We also provide comprehensive mechanical and non-destructive testing services in-house. Waspaloy's work-hardening characteristics require careful machining practices, and our experienced team is equipped to handle this demanding superalloy. Having all capabilities under one roof allows for faster turnaround, tighter quality control, and reduced overall cost compared to using multiple vendors. Contact us to discuss your specific processing requirements.

Need AMS 5709 material or a custom quote?

Our nickel alloy specialists can provide fast pricing, availability, and technical guidance for your AMS 5709 Waspaloy requirements.