Frequency isn’t just a spec—it directly impacts heat depth, heating speed and surface control. Selecting the best-fit frequency helps you achieve the hardness profile you need while protecting material integrity and supporting repeatable production.

What we evaluate together:

• Component geometry and critical features
• Material / alloy and metallurgical requirements
• Target case depth / hardness profile
• Cycle time and throughput goals
• Part handling and automation needs
• Plant power and layout constraints

Which Frequency Fits Your Aerospace Application?

Low Frequency

Heat Depth: Deep penetration
Best for: Larger cross-sections and thick parts that require deeper heating
Typical uses:

• Heating large, thick components
• Processes where uniform, deeper heat is required before / through hardening steps
• Heavy-duty applications where depth and stability matter

Medium Frequency

Heat Depth: Moderate depth
Best for: Balanced surface + through heating with strong versatility
Typical uses:

• Controlled case depth hardening
• Repeat able heating for parts requiring depth control and production consistency
• Brazing / joining applications where predictable heat control is key

High Frequency

Heat Depth: Shallow penetration
Best for: Rapid surface heating and precision applications
Typical uses:

• Surface hardening of small or thin components
• Localized heating on precision features
• Soldering
• Brazing small components
• Heating thin-wall parts where you want minimal penetration

Multi-Frequency

Heat Depth: Adjustable
Best for: Flexible operations and mixed part families
Typical uses:

• Multi-material heating
• Applications requiring different case depths across part families
• Lines with frequent changeovers or evolving aerospace programs

Practical Flexibility for Multi-Frequency Aerospace Operations

If your operation uses more than one frequency—or you expect your part mix to evolve—IDEA’s hardening systems may be the most practical solution. We support multi-frequency capability in a streamlined platform, helping aerospace manufacturers adapt without duplicating equipment.

Why manufacturers choose IDEA hardening systems:

• Our equipment supports multiple frequency needs within one system approach
• This reduces redundancy versus buying multiple dedicated units
• Helps standardize process control across programs
• Designed for scalability as production requirements change

A Collaboration-First Approach

IDEA’s process is built around collaboration. We work with your team early to align system configuration with real production needs.

How we work together:

1. Review your parts, materials, targets, and constraints
2. Recommend the right frequency strategy and system configuration
3. Refine around throughput, automation and future program needs

Let’s Talk About Your Aerospace Hardening Application

Ready to select the right induction frequency and build a hardening system designed for repeatability and long-term flexibility? Schedule a consultation. We’re available via phone, email, video call or in person.