a bunch of metal rings are stacked on top of each other

Waspaloy®

Waspaloy®

Nickel (Ni) - 53.89 Balance
Chromium (Cr) - 19.5 Median
(18.0 Min - 21.5 Max)
Aluminum Al - 1.4 Median
(14.0 Min - 17.0 Max)
Molybdenum (Mo) - 4.25 Median
(3.5 Min - 5.0 Max)
Iron (Fe) - 2.0 Max
Manganese (Mn) - 1.0 Max
Cobalt (Co) - 13.5 Median
(12.0 Min - 15.0 Max)
Titanium (Ti) - 3.0 Median
(2.75 Min - 3.25 Max)
Other

Key

Nickel
Copper
Chromium
Aluminum
Molybdenum
Iron
Titanium
Manganese
Cobalt
Other
  • Nickel (Ni) 53.89 Balance
  • Copper (Cu) 0.5 Max
  • Chromium (Cr) 19.5 Median
    (18.0 Min - 21.5 Max)
  • Aluminum Al 1.4 Median
    (14.0 Min - 17.0 Max)
  • Molybdenum (Mo) 4.25 Median
    (3.5 Min - 5.0 Max)
  • Iron (Fe) 2.0 Max
  • Manganese (Mn) 1.0 Max
  • Cobalt (Co) 13.5 Median
    (12.0 Min - 15.0 Max)
  • Carbon (C) 0.065 Median
    (0.03 Min - 0.10 Max)
  • Titanium (Ti) 3.0
  • Silicon (Si) 0.75
  • Zirconium (Zr) 0.07 Median
    (0.02 Min - 0.12 Max)
  • Phosphorus (P) 0.03 Max
  • Sulfur (S) 0.03 Max
  • Boron (B) 0.0065 Median
    (0.003 Min - 0.01 Max)

UNS N07001

Waspaloy® is a nickel-based superalloy renowned for its exceptional strength and oxidation resistance at high temperatures, typically up to 980°C (1800°F). Its superior performance makes it a critical material in aerospace and power generation industries. In aerospace, Waspaloy® is commonly used in jet engine components, turbine disks, and combustion chambers. For fasteners, Waspaloy® is favored in environments requiring high tensile strength, corrosion resistance, and heat tolerance—such as in gas turbines, space systems, and high-performance aircraft. Its machinability and resistance to creep deformation under stress also make it ideal for critical structural and fastening applications in extreme conditions.

Contact Nickel Systems today to request a quote on Waspaloy® fasteners for your next aerospace project.

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Summary

  • Environment:
    Severe Environments: Hot Concentrated Acids & Chemicals
  • Temperature Limit:
    1800 °F / 980 °C
  • Ultimate Tensile (Typical):
    160 ksi / 1100 mpa

Waspaloy® Specifications

Get our technical data and specifications for Waspaloy® below.

Download the Haynes® Waspaloy® Technical Data Sheet. This technical data is specifically related to Haynes® Waspaloy® material. If you require this specific material, you must request it at the time of quotation. Haynes®  is a trademark of Haynes International. Waspaloy® is a trademark of United Technologies Corporation. For more information on this mill, please visit the website of Haynes International.

UNS N07001 Specifications
Material
Standard
Sheet, Plate, & Strip
AMS 5544
Billet, Rod, & Bar
AMS 5704, AMS 5706, AMS 5707, SB 647, B 637
Bare Welding Rods & Wire
AMS 5828
Forgings
AMS 5704, AMS 5706, AMS 5707, Sb 637, B637
UNS N07001 Chemical Composition
Element
% Composition
Description
Nickel
~54%
Remainder
Chromium
18-21%
Range
Cobalt
12-15%
Range
Molybdenum
3.5-5%
Range
Titanium
2.75-3.25%
Range
Iron
2%
Max
Aluminum
1.2-1.6%
Range
Manganese
1%
Max
Silicon
0.75%
Max
Copper
0.5%
Max
Carbon
0.03-0.10%
Range
Phosphorus
0.03%
Max
Sulfur
0.03%
Max
Zirconium
0.02-0.12%
Range
Boron
0.003-0.01%
Range
These values are based on the ASTM standard. Specific trademarked materials will fall somewhere within this standard. If you need a specific trademarked material or chemical composition, you must request this at the time of quotation
Waspaloy®'s Physical Properties
Density
RT
0.296 lb/in³
RT
8.20/g/cm³
Melting Range
2,425 - 2,475℉
1,330 - 1,360℃
Thermal Conductivity
Temperature, ℉
Btu-in/ft²-hr-℉
Temperature, ℃
W/m-℃
400
88
200
12.6
800
112
400
15.7
1,000
125
600
19.1
1,200
139
700
20.9
1,400
152
800
22.7
1,600
167
900
24.5
Mean Coefficient of Thermal Expansion
Temperature, ℉
μin/in-℉
Temperature, ℃
x10^-6 m/m-℃
70 - 800
7.6
20 - 500
13.9
70 - 1,000
7.8
20 - 600
14.3
70 - 1,400
8.4
20 - 800
15.4
70 - 1,600
8.9
20 - 900
16.4
70 - 1,800
9.7
20 - 1,000
17.8
Dynamic Modulus of Elasticity
Temperature, ℉
x10^6 psi
Temperature, ℃
GPa
70
30.9
20
213
400
29.5
200
204
800
27.7
400
192
1,000
26.7
600
180
1,200
25.6
700
172
1,400
24.3
800
164
1,800
21.1
1,000
146
UNS 07001 Mechanical Properties
Tensile Strength
160ksi / 1,100MPa
Yield Strength
110ksi / 760MPa
Elongation in 2 in. Min,
15%
Reduction of Area, Min
18%
Brinell Hardness Min.
310
These are the minimum required values for the ASTM B637 standard for rod and bar in UNS 07001 material.

What is Waspaloy®?

Waspaloy® is a nickel-based, precipitation-hardened, austenitic, superalloy. Its primary chemical elements are nickel, chromium, molybdenum and cobalt. It maintains excellent performances at elevated temperatures. It is designed to be used in aerospace, power generation, and other high-temperature, high-stress environments.

Waspaloy® Chemical Composition

Check out our Waspaloy® Chemical Composition Breakdown.

a picture of the chemical composition of waspaloy

Beyond the typical elements connected with high nickel alloys, Waspaloy® has several unique elements that increase its performance in extreme environments.

Waspaloy’s® Key Elements and Their Effects
Element
Primary Role
Key Effect on Performance
Nickel (Ni)
Matrix base
High-temp strength, ductility, oxidation resistance
Chromium (Cr)
Oxidation resistance
Forms protective Chromium-oxygen layer
Cobalt (Co)
Solid solution & γ’ stabilizer
Boosts high-temp strength & phase stability
Molybdenum (Mo)
Strengthener
Improves creep resistance & grain stability
Aluminum (Al) & Titanium (Ti)
Precipitation hardeners
Form γ’ phase which is the core of Waspaloy’s strength
Boron (B) & Zirconium (Zr)
Grain boundary modifiers
Enhance ductility, toughness, and creep resistance

 

 

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Waspaloy® in Extreme Environments

Waspaloy® is designed for use in extreme environments. Check out a description of its performance below.

Oxidation Resistance

Waspaloy® fasteners exhibits excellent oxidation resistance at elevated temperatures, up to 980℃ (1,800℉). It forms a stable, protective oxide layer that prevents degradation in hot gas environments.

Corrosion Resistance

Waspaloy® offers good resistance to mildly to moderately corrosive environments, especially under aerospace and turbine service conditions. However, it is not primarily designed for aqueous or marine corrosion, unlike stainless steels or corrosion-resistant nickel alloys.

Severe Environments

Waspaloy® is engineered specifically for severe and mechanical environments, such as those found in gas turbines and high-performance aircraft. It maintains high strength and structural stability even under creep, thermal fatigue, and oxidizing hot gases.

 

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Related Materials to Waspaloy®

Does Waspaloy® meet your project’s requirements? If not, check out these related materials.

Waspaloy® Material Comparison
Property
Inconel® 625
Inconel® 718
Waspaloy®
Hastelloy® X
UNS Number
N06625
N07718
N07001
N06002
Strength Mechanism
Solid Solution
Precipitation Hardening
Precipitation Hardening
Solid Solution
Max Service Temp.
1,500℉ (815℃)
1,290℉ (700℃)
1,800℉ (1,240MPa)
2,150℉ (1,175℃)
Tensile Strength
135ksi (930MPa)
200ksi (1,380MPa)
180ksi (1,240MPa)
110ksi (750MPa)
Creep Resistance
Moderate
Moderate
Excellent
Moderate
Oxidation Resistance
Good
Good
Excellent
Excellent
Corrosion Resistance
Excellent (chemical & marine)
Good (limited acidic)
Moderate
Moderate to good
Weldability
Excellent
Excellent
Fair to poor
Good
Fabrication
Easy
Easy
Difficult
Good
Typical Use
Chemical, marine, nuclear
Aerospace, cryo tanks
Jet turbines, hot fasteners
Combusters, heat exchangers
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Waspaloy® Fastener Applications & Industries

Nickel Systems provides high-quality exotic-grade materials that hold up in the toughest, most severe heat and corrosive environments. With our large inventory of specialty fasteners in stock, we are always ready to serve the most challenging applications.

Aerospace

Turbine Engines

The aerospace industry use 12-point flange screws, hex head cap screws, and double hex socket head cap screws are used in compressor sections, combustor assemblies, and turbine casings.

Exhaust Nozzle Assemblies

Waspaloy® fasteners are used in exhaust nozzle assemblies. Internal wrenching bolts (NAS 144-type) are the primary fasteners used.

Airframe Components Near Engines

For structures near hot areas such as jet turbines and engines, aerospace industries use waspaloy® studs and retaining rings for panel fasteners.

Chemical Processing Industry

High-temperature Reactors & Heat Exchangers

Waspaloy® socket head caps screws and hex flange bolts are used in these applications due to their resistance to oxidation and corrosion at high temperatures.

Catalytic Reformers and pressure vessels

Waspaloy stud bolts, heavy hex nuts are used in structural frames to resist extreme chemical environments with sustained heat.  U-bolts are used for pipe support brackets under thermal load.

Defense Industry

Missile Propulsion Systems

Waspaloy® fasteners are used in high-temp and high-stress environments during launch and flight. Socket head cap screws are used in motor casings. Custom formed Waspaloy® locking bolts are used for thrust vector control.

Jet Turbine Engines for Fighter Aircraft

High-performance military engines require sustained thermal endurance. Double hex head bolts with self-locking features are used per MIL-DTL-1222. Waspaloy® threaded inserts are used in aluminum engine housing to prevent thread stripping.

Power Generation Industry

Gas Turbines

Waspaloy® turbine blade retention bolts are used in combustors and turbine blade retainers.

Nuclear Power Plants

Waspaloy® fasteners are used in nuclear power plants to resist to creep and oxidation in reactor internals and steams generators. Custom Waspaloy® anchoring studs are used for containment and radiation shielding panels.

 

 

 

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