Waspaloy® Bar - AMS 5706 - UNS N07001
Waspaloy® Bar – AMS 5706 is a precipitation‑hardening, austenitic nickel‑based superalloy developed for demanding elevated‑temperature applications. The alloy delivers an exceptional combination of high strength, corrosion resistance, and thermal stability, making it well suited for service at temperatures up to 1,600°F (871°C). Waspaloy® 5706 has a long history of use in gas turbine engines, where components are subjected to extreme mechanical stress and prolonged heat exposure. It is commonly specified for highly stressed parts in the turbine section of jet engines, including blades, vanes, rings, and discs, where consistent performance and reliability are critical.
- Inventory & Specs
- Chemical Composition
- Physical Properties
- Mechanical Properties
- Datasheet
- Additional Info
- FAQs
Inventory Size Ranges for Waspaloy® 5706
| Type | Thickness | AMS Standards | UNS | Get a Quote |
|---|---|---|---|---|
| Bar | 0.375" - 2.000" | AMS 5706, AMS 5704 (Capable of), AMS 5707 (Capable of) | UNS N07001 | Get a Quote |
Characteristics of Waspaloy® 5706
Waspaloy® 5706 is a precipitation‑hardened nickel‑based superalloy known for its exceptional strength and stability at elevated temperatures. It exhibits outstanding resistance to creep, stress rupture, and fatigue, allowing components to maintain mechanical integrity under sustained thermal and mechanical loading. The alloy retains high tensile and yield strength at temperatures approaching 1,800°F (980°C), making it well suited for rotating and load‑bearing parts in aerospace and gas turbine environments. In addition to its mechanical performance, Waspaloy 5706 provides excellent resistance to oxidation and hot corrosion, even in aggressive operating conditions. Its stable microstructure and ability to withstand prolonged exposure to high heat make it a reliable choice for critical applications where long service life and performance consistency are essential.
Working With Waspaloy® 5706
Working with Waspaloy® 5706 requires careful consideration due to its high strength, toughness, and tendency to work‑harden. The alloy is more difficult to machine than conventional stainless steels or lower‑strength nickel alloys, requiring rigid equipment, sharp tooling, controlled cutting parameters, and reduced machining speeds. Forming operations are typically performed in the solution‑annealed condition, as cold working is limited and may necessitate intermediate annealing to prevent cracking. Proper heat treatment is essential to achieving the desired mechanical properties, with strength developed through solution treatment followed by aging. Waspaloy® 5706 is weldable using appropriate processes and filler materials, though strict control of heat input and post‑weld heat treatment may be required to minimize the risk of cracking and ensure optimal performance in high‑temperature service environments.
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
- EN 2.4654
- Line marked >.500 inch diameter
- Predominantly produced by VIM-VAR melt method. Solution treated, centerless ground or rough turned
Common Trade Names
- Waspaloy®
Industry Applications for Waspaloy® 5706
- Aerospace Fasteners
- Compressor Discs
- Shafts
- Spacers
- Turbine Cases
Chemical Composition
| Element | Min | Max | |
|---|---|---|---|
| Ni | Nickel | - | 58.00 |
| Cr | Chromium | - | 19.00 |
| Co | Cobalt | - | 13.00 |
| Mo | Molybdenum | - | 4.0 |
| Ti | Titanium | - | 3.00 |
| Al | Aluminum | - | 1.50 |
Physical Properties
| Property | Value |
|---|---|
| Density | 0.296 lb/in3, (8.19 g/cm3) |
Non-magnetic
Maintains high strength, toughness, and excellent rupture properties to 1400ºF (760°C). This alloy has good resistance to oxidation and sulfidation to 1600ºF (871°C) due to its high chromium content. Waspaloy® Bar - AMS 5706 displays excellent resistance to corrosion by combustion products encountered in gas turbines and aircraft jet engines at temperatures up to 1600ºF (871ºC). Intergranular oxidation occurs at temperatures above 1600ºF (871ºC). This alloy has excellent resistance to stress corrosion cracking and adequate hot corrosion resistance.
Mechanical Properties
Waspaloy® AMS 5706 bar is difficult to machine, even in the solution treated condition. Rigid set-up, plenty of power, sharp tools and positive cuts are important. Use of carbide or ceramic tools is required.
Hardness
Hardness of stock is typically 230 BHN. Supplied in the solution treated condition - 1825-1900ºF (996-1038°C) for 1 hour. Waspaloy® Bar - AMS 5706 exhibits best machinability in this condition. After machining, parts are normally stabilized at 1550ºF (843°C) for 4 hours, air cooled, followed by precipitation aging at 1400ºF (760°C) for 16 hours, air cooled. The hardness of this alloy in the fully heat-treated condition ranges from 34 to 44 Rockwell C.
Machinability
Rating: 12% of B-1112
Typical stock removal rate: 30-50 surface feet/minute with carbide tooling.
Datasheet
Additional Info
A Brief History of Waspaloy® 5706
Waspaloy® 5706 is a precipitation‑hardening, austenitic nickel‑based superalloy developed to meet the growing demands of high‑temperature aerospace propulsion systems. Introduced in the mid‑20th century during rapid advances in gas turbine technology, Waspaloy® was engineered to deliver significantly higher strength, fatigue resistance, and creep performance than earlier nickel alloys. Its ability to maintain mechanical integrity under extreme heat and stress made it a critical material in the evolution of jet engine turbine sections and other high‑performance aerospace components.
Originally developed to bridge the performance gap between solid‑solution nickel alloys and newer superalloys, Waspaloy® quickly became recognized for its reliability in environments requiring prolonged exposure to elevated temperatures combined with high mechanical loads.
How Waspaloy® 5706 Was Developed
Waspaloy® was designed by metallurgists seeking an alloy capable of withstanding the intense thermal and centrifugal stresses found in gas turbine engines while offering improved corrosion and oxidation resistance. By utilizing a nickel‑based matrix strengthened through controlled precipitation of gamma‑prime (γ′) phases, engineers were able to significantly enhance high‑temperature strength and creep resistance. Carefully balanced additions of chromium, cobalt, molybdenum, aluminum, and titanium contribute to the alloy’s exceptional stability and performance in elevated‑temperature service.
This precipitation‑hardening mechanism allows Waspaloy® 5706 to achieve superior mechanical properties through precise solution treatment and aging processes, making proper material processing and heat treatment critical to its performance. The resulting alloy set new benchmarks for durability and longevity in aerospace turbine environments.
Early Applications of Waspaloy® 5706
As jet engines increased in operating temperatures and rotational speeds, Waspaloy® emerged as a trusted material for highly stressed turbine components. Early adoption focused on parts located in the hot section of aerospace engines, where conventional alloys experienced rapid strength degradation and fatigue failure. Waspaloy’s resistance to creep, fatigue, and oxidation enabled longer service life and increased engine reliability.
Common early applications included turbine blades, vanes, rings, and discs, where consistent mechanical performance at temperatures up to 1,600°F (871°C) was essential. Its success in these demanding environments cemented Waspaloy’s reputation as a cornerstone alloy in modern aerospace propulsion systems.
How Waspaloy® 5706 Is Used Today
Today, Waspaloy® 5706 remains a critical superalloy for applications that demand exceptional strength at elevated temperatures combined with resistance to corrosion and thermal degradation. While newer superalloys have been developed, Waspaloy® continues to be specified for many turbine and high‑stress aerospace components due to its proven performance, availability, and well‑understood processing characteristics.
Waspaloy® 5706 is commonly used in:
- Aerospace gas turbine engine components such as blades, seals, discs, and rings
- High‑stress rotating and structural engine parts
- Industrial turbine and power generation components
- High‑temperature fasteners and specialized hardware
Its balanced performance profile makes it a preferred material where long‑term reliability, fatigue resistance, and thermal stability are mission‑critical.
Your Trusted Supplier for Waspaloy® 5706
United Performance Metals is a global specialty metals solutions provider offering Waspaloy® 5706 (AMS 5706) in bar to support high‑performance aerospace and industrial applications. With extensive experience in nickel‑based superalloys and world‑class processing capabilities, UPM delivers material that meets exacting specifications and demanding lead‑time requirements.
Backed by technical expertise, certification support, and precision processing services, United Performance Metals helps customers confidently source Waspaloy® 5706 for their most critical applications.
Contact our team today to learn how Waspaloy® 5706 can support your next high‑temperature, high‑strength program.