Vacuum Gas Nitriding Services
Vacuum Gas Nitriding Services
Increase Part Performance and Service Life
Vacuum nitriding services from Solar Atmospheres can significantly increase the fatigue strength and service life of your parts. Benefits include case depths up to 0.025” and improved wear and anti-galling properties due to a 40 – 70% increase in surface hardness. Corrosion resistance is increased through nitrogen-enrichment. A controlled low processing temperature of 700 – 1200°F preserves the mechanical properties of the base material and minimizes distortion of the finished parts.
Unique Capabilities
- Single location processing from hardening and tempering to vacuum gas nitriding (Souderton, PA facility)
- Case hardness depths up to 0.025”
- Microprocessor controls for precise nitriding potential and repeatable results
- On-site Metallurgical Test Lab, Nadcap Accredited
- Conformance to SAE specifications AMS-2759/6 for gas nitriding
- Oxynitriding – a unique process developed by Solar providing an aesthetically pleasing blackened surface appearance and improved corrosion resistance
- Patented furnace design decreases nitriding cycles up to 50%
- Metallurgical R&D Team for cycle development
- Ability to mask parts
Materials Processed
- Alloy Steels
- Ultra High Strength Steels
- Specialty Steels
- Titanium Alloys
- Tool Steels
- Mold Steels
FAQ
Vacuum Gas Nitriding (VGN) is an advanced thermochemical heat treating process that diffuses nitrogen into the surface of steel components to create a hard, wear-resistant case while maintaining a tough, ductile core. Unlike conventional gas nitriding, VGN uses rapid vacuum evacuation instead of repeated chamber purging, improving process efficiency and reducing cycle times. Forced gas cooling further shortens processing time while maintaining excellent part quality.
Vacuum Gas Nitriding offers several advantages, including:
- Increased surface hardness and wear resistance
- Improved fatigue strength
- Excellent dimensional stability with minimal distortion
- More consistent and uniform nitriding results
- Shorter processing cycles through vacuum technology and forced gas cooling
- Enhanced process control and repeatability
Yes. Solar Atmospheres’ proprietary gas delivery system can produce a dark Fe₃O₄ (magnetite) surface finish that enhances the appearance of components while also improving corrosion resistance. This black finish is often desirable for both functional and cosmetic applications.
Both processes produce a hard, nitrogen-rich surface layer with a tougher core and similar metallurgical results. However, Vacuum Gas Nitriding provides several improvements over traditional gas nitriding, including:
- Better temperature uniformity
- More consistent case depth and hardness
- Improved process repeatability
- Reduced cycle times
- Greater overall process efficiency
Vacuum Gas Nitriding is commonly used on alloy steels, tool steels, and nitriding-grade steels that contain alloying elements such as chromium, molybdenum, vanadium, or aluminum. These materials respond well to the nitriding process and develop excellent surface hardness and wear resistance.
Vacuum Gas Nitriding is widely used in industries where exceptional wear resistance, fatigue strength, and dimensional stability are critical, including:
- Aerospace
- Defense
- Automotive
- Medical
- Power generation
- Industrial manufacturing
- Tool and die production
The process is ideal for components that require enhanced surface performance without significant distortion, including:
- Gears
- Shafts
- Bearings
- Tooling
- Dies
- Valves
- Hydraulic components
- Precision machined parts
Vacuum Gas Nitriding is an excellent choice for applications requiring a hard, wear-resistant surface while maintaining dimensional accuracy. Its superior temperature uniformity, process consistency, reduced cycle times, and optional black oxide finish make it an ideal solution for demanding, high-performance applications across multiple industries.