Aerospace Applications Where Stainless Steel Forgings Shine

The process of forging stainless steel involves shaping stainless steel alloys using controlled deformation, often aided by heat and mechanical force. This technique endows the metal with enhanced mechanical attributes, including augmented strength, resilience, and improved resistance against fatigue and corrosion. Consequently, stainless steel forgings find their way into an array of aerospace parts, from indispensable engine components to pivotal structural members.

Stainless Steel Suited for Aerospace Forging

Stainless Steel: An Optimal Choice for Aerospace Forging:

  • Corrosion Resistance: Given its high resistance to both corrosion and oxidation, stainless steel is an exemplary choice for aerospace parts that often face stringent environmental adversities, such as the fluctuating temperatures and pressures encountered at high altitudes.
  • Strength-to-Weight Ratio: The incredible strength-to-weight ratio of stainless steel empowers engineers to craft parts that are not only lightweight but also exceptionally strong. This balance is vital for optimizing fuel efficiency and maximizing the overall performance of aircraft.
  • Durability: Notably durable, stainless steel forgings can withstand repetitive stress and loading, making them ideal for aerospace components that experience frequent load cycles.

Choosing Stainless Steel for Aerospace

Key Features of Stainless Steel:

  • Corrosion Resistance: Aerospace machinery is constantly exposed to diverse environmental elements like moisture, salt, and temperature extremes. The intrinsic corrosion resistance of stainless steel ensures these vital components maintain their functionality, leading to reduced upkeep costs and augmented safety.
  • Strength-to-Weight Ratio: In the aerospace sector, weight is always a significant factor. Thanks to its notable strength-to-weight ratio, stainless steel is an excellent material for creating components that balance durability and lightness.  
  • Durability: The aerospace sector demands materials that can consistently endure immense forces and repeated stresses. Renowned for their robustness, stainless steel forgings minimize the necessity for recurrent replacements and upkeep – an essential trait for mission-essential parts.


Applications in Aerospace

Roles of Stainless Steel Forgings in Aircraft Structure:

  • Landing Gear Components: Such as landing gear struts, axles, and rods, heavily rely on stainless steel forgings for maintaining structural fortitude.
  • Wing Supports: Critical elements like wing spars and fittings incorporate stainless steel forgings, vital for managing aerodynamic forces and ensuring wing stability.
  • Fuselage Structures: The central body of aircraft – the fuselage – uses stainless steel forgings to bolster structural integrity and safeguard passengers and crucial systems.

Engine Components and Thermal Resilience:

  • Turbine Blades: Stainless steel forgings are preferred for turbine blades due to their unmatched heat resistance, vital for components exposed to high temperatures in combustion chambers.
  • Discs and Housings: Engine discs and housings leverage the strength and thermal resilience of stainless steel forgings for optimal performance.

Fastening Components:

  • Bolts, Screws, and Fittings: Stainless steel forged fasteners, like bolts and screws, offer exceptional strength and corrosion resistance, ensuring long-lasting reliability.  
  • Clamps and Brackets: Utilized for securing various parts, these components take advantage of stainless steel’s corrosion resistance, ensuring longevity.

Landing Gear Systems and Stainless Steel Forgings:

  • Struts: Bearing the brunt of the aircraft’s weight during operations, struts made from stainless steel forgings are resilient enough to endure immense compressive forces.
  • Axles: Crucial for support and movement, stainless steel axles are chosen for their robust nature and resistance to wear.
  • Retraction Mechanisms: Stainless steel forgings are integral to gear retraction systems, providing the essential durability needed for the mechanical stresses encountered during gear operations.

Hydraulic Systems and Fluid Connectors

Stainless steel forgings are widely utilized within these systems, predominantly due to their:

  • Durability: The inherently high pressures within hydraulic systems necessitate components—such as pistons, cylinders, and fittings—that can withstand intense stress. Stainless steel forgings are up to the task, ensuring sustained system performance.
  • Corrosion Resistance: The sometimes corrosive nature of hydraulic fluids can compromise component integrity. The presence of semi-inert steel ensures that corrosive elements have no effect on the system’s durability and reliability.  
  • Machining Precision: The forging process renders stainless steel ideally suited for precision machining, a characteristic essential for the fabrication of intricate hydraulic parts that mandate tight tolerances for effective fluid and pressure regulation.


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Instrumentation and Sensors: The Assurance of Stainless Steel

Stainless steel forgings amplify their efficiency through:

  • Precision and Stability: Thanks to its steadfast nature, and its ability to resist changes in temperature, this alloy guarantees that any instruments made with it yield consistent and precise results.  
  • Longevity: With a demand for extended operational life without the need for frequent maintenance or recalibration, stainless steel forgings emerge as the material of choice.
  • Environmental Resilience: Instruments are frequently subjected to a variety of environmental elements, from moisture to extreme temperature gradients. Stainless steel’s formidable resistance ensures consistent, accurate readings.

The Stainless Steel Advantage in Aerospace

Stainless steel forgings bring a plethora of benefits to aerospace, including:

  • Longevity: The exceptional durability of stainless steel minimizes maintenance demands and extends component life.
  • Environmental Resilience: The alloy stands up to even the most hostile conditions, ensuring component longevity.
  • Optimal Strength-to-Weight Ratio: This characteristic paves the way for lightweight yet formidable aerospace components, elevating fuel efficiency and performance metrics.
  • Corrosion Resistance: A natural resistance to oxidative and corrosive processes ensures the lasting reliability of essential aerospace components.
  • Precision Machinability: The adaptability of stainless steel forgings facilitates the production of complex, precision-engineered components.

Challenges in Stainless Steel Implementation

While the benefits are substantial, certain challenges and considerations persist:

  • Cost Dynamics: The procurement and processing of premium stainless steel can inflate aerospace manufacturing expenses.
  • Weight Equations: Despite its strength, stainless steel, when compared to materials like aluminum, has a weight differential that engineers must tactically navigate.
  • Heat Treatment Necessities: Stainless steel forgings often mandate specific heat treatments, a process that can be intricate and time-intensive.

Peeking into the Future: Aerospace Forgings and Beyond

As we gaze forward, stainless steel forgings exhibit promising trajectories:

  • Emergent Alloys: R&D efforts are constantly unearthing advanced alloys, promising even more tailored aerospace solutions.
  • Digital Transformation and Industry 4.0: Aerospace is progressively embracing technological advancements, auguring well for efficient, precision-driven stainless steel forging processes.
  • Additive Manufacturing Revolution: 3D printing and similar techniques promise to redefine stainless steel component manufacturing, ushering in novel designs and resource efficiencies.
  • Sustainability Pursuits: With a heightened focus on ecological impacts, the horizon might see green stainless steel production methodologies and enhanced recycling drives.

Where to Find Us:

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