STEP 1
Outstanding Creep Resistance
CMSX-4 maintains excellent creep strength at temperatures up to 1150°C, perfectly suited for turbine blades and other parts enduring sustained stress and extreme heat.
CMSX-4 Alloy
CMSX-4 is a single-crystal superalloy compliant with AMS 5947 and ISO 9001 specifications. As a high-grade engineering material, it is ideal for aerospace and energy sectors demanding superior high-temperature strength and outstanding corrosion resistance, and is widely adopted for manufacturing turbine blades and other high-performance core components.
CMSX-4 Alloy Introduction
Developed specifically for extreme high-temperature service conditions, this nickel-based superalloy delivers exceptional mechanical properties and long-term service durability. Its unique single-crystal structure removes internal grain boundaries, endowing it with remarkable creep resistance and fatigue strength even at temperatures above 1150°C.
It is extensively applied to critical parts such as turbine blades and guide vanes for aero-engines and power generation gas turbines. Featuring high tensile strength, superior thermal fatigue resistance and excellent oxidation resistance, it sustains stable and reliable performance throughout long service cycles. Thanks to its excellent structural stability and mechanical integrity, CMSX-4 stands as a preferred material for industries pursuing ultra-high component reliability.
The grain-boundary-free single-crystal structure effectively inhibits creep deformation and further boosts fatigue resistance. The addition of rhenium and tungsten optimizes its high-temperature thermal stability, while chromium element grants strong oxidation resistance, enabling CMSX-4 to retain stable service performance steadily under harsh extreme working environments.
CMSX-4 Chemical Composition
| Element | CMSX-4 |
|---|---|
| Chromium (Cr) | 6.4-6.6 |
| Cobalt (Co) | 9.3-10 |
| Molybdenum (Mo) | 0.5-0.7 |
| Tungsten (W) | 6.2-6.6 |
| Aluminium (Al) | 5.45-5.75 |
| Titanium (Ti) | 0.9-1.1 |
| Tantalum (Ta) | 6.3-6.7 |
| Rhenium (Re) | 2.8-3.1 |
| Niobium (Nb) | 0.1 |
| Hafnium (Hf) | 0.07 - 0.12 |
| Carbon (C) | 0-0.006 |
| Boron (B) | 0-0.0025 |
| Zirconium (Zr) | 0-0.0075 |
| Nickel (Ni) | Bal. |
CMSX-4 Physical Properties
CMSX-4 delivers exceptional mechanical properties at high temperatures. Its high melting point and elastic modulus guarantee reliable structural stability for critical service scenarios, while favorable thermal conductivity facilitates efficient heat dissipation.
Boasting a grain-boundary-free single-crystal structure, the alloy achieves markedly improved mechanical strength and creep resistance. The elimination of grain boundaries effectively restrains stress-induced deformation, securing outstanding high-temperature service performance.
Its microstructure consists of gamma-prime (γ') precipitates uniformly distributed throughout the nickel matrix, further reinforced by rhenium, tantalum and other alloying elements. Such precipitates hinder dislocation motion, greatly elevating creep resistance and fatigue strength. This renders CMSX-4 perfectly suited for rotating parts used in aero-engines and gas turbines.
Features of CMSX-4 Superalloy
CMSX-4 Superalloy’s Machinability
CMSX-4 is well adaptable to vacuum investment casting. Its tailored chemical composition enables high-precision, defect-free castings that meet stringent requirements for aerospace components.
Single crystal casting stands as the optimal manufacturing process for CMSX-4. This process removes internal grain boundaries, thereby greatly boosting its creep resistance and fatigue properties.
CMSX-4 alloy is also applicable to the production of powder metallurgy turbine discs. Its single-crystal structure and premium superalloy formulation deliver outstanding creep and fatigue resistance for such applications.
Applicaitons of CMSX-4 Superalloy
- Aerospace & Aviation
CMSX-4 is widely adopted for aero-engine turbine blades, guide vanes and core engine parts, enabling stable high-performance operation under extreme temperature conditions.
- Power Generation
It serves as a core material for gas turbines, delivering outstanding long-term durability and operational efficiency against combined thermal and mechanical loads.
- Oil & Gas
CMSX-4 fits well for high-temperature turbine equipment in this field, featuring superior corrosion resistance and steady operational reliability in harsh working environments.
- Energy Industry
Applied in gas turbines and power generation facilities, it sustains stable and consistent performance throughout long service cycles.
- Marine Industry
Ideal for marine propulsion systems and exhaust parts, it satisfies stringent requirements for heat resistance and anti-corrosion capability.
- Mining Industry
It offers excellent wear resistance and structural durability for impellers and high-load mechanical parts operating in abrasive working scenarios.
- Automotive Industry
Used in high-performance turbochargers, the alloy effectively withstands intense thermal stress and improves overall engine operating efficiency.
- Chemical Processing
It is applicable to high-temperature reactors and industrial valves, standing up to corrosive chemical media and elevated service temperatures.
- Pharmaceutical & Food Industry
CMSX-4 guarantees reliable performance in heat treatment and sterilization equipment, complying with hygiene standards while resisting continuous thermal impact.
- Military & Defense
Deployed in military aero-engines and missile systems, it provides robust mechanical strength and high-temperature resistance for key tactical components.
- Nuclear Industry
It is utilized for nuclear reactor structural parts, securing sound structural integrity and operational safety under high temperature and strong radiation environments.
