When it comes to selecting a metal finish, black oxide stands out as the top choice for businesses seeking a perfect balance of visual appeal, durability, and cost-effectiveness. At GSO-Metals, we specialize in providing exceptional black oxide metal treatment services tailored to the unique needs of the various industries we serve. Discover why the benefits of black oxide make it the premier metal finish for your business.

Hot Black Oxide delivers a striking and professional black finish setting your products apart from competitors. This visually appealing finish captures the attention and elevates the appearance and value of your products.

The American Society for Testing and Materials (ASTM) found that black oxide treatment provides corrosion resistance for approximately 144 hours during the salt spray test. This impressive result showcases the durability black oxide adds to products, making it a cost-effective solution for enhancing corrosion resistance. Our Process meets MIL-DTL-13924D Class 1 and AMS 2485L Standards.

Black Oxide treatment is highly regarded for its ability to minimize glare and light reflection better than many other metal coatings and bare metal surfaces, making it an ideal choice for various applications. Black Oxide outperforms a majority of alternative metal coatings and untreated surfaces in reducing glare and reflection
The porous characteristics of Black Oxide coating provide a unique advantage in many applications by promoting better lubrication and adherence of oils and other lubricants. This improved lubrication leads to reduced wear and enhanced performance, especially in moving parts, ensuring the product lifespan, reliability, and optimal functionality of your products.

Black oxide treatment is highly valued for its dimensional stability on steel parts, ensuring tight precision tolerances and preserving the original tolerances of precision components. This ensures products meet exact specifications, enhancing overall quality and performance.

Black oxide treatment is known as a more environmentally friendly metal finishing process compared to many alternatives. This process makes use of less harmful chemicals and allows for easier waste management, making it a responsible and sustainable choice for businesses looking to minimize their environmental impact.

Elevating quality Across Industries

At GSO-Metals, we understand the diverse applications and benefits that black oxide coatings bring to a wide range of industries. GSO Metals’ services are tailored to meet the unique requirements of each sector, delivering exceptional quality and performance. Explore the industries we serve and see how black oxide can elevate your business.


Black Oxide treatment on aircraft fasteners, landing gear components, airframe parts, and interior components decreases glare, maintains tight tolerances, and provides heightened corrosion resistance for optimal performance even under the most demanding conditions. Our process meets AMS 2485L standards.


Black Oxide coatings on engine components, fasteners, gears, suspension parts, and decorative trim ensure precision fitting and performance, improve visual appeal with an attractive, glare-free finish, and enhance component durability and longevity with superior corrosion resistance.


Black Oxide coatings on fasteners, structural components, heavy machinery, and hand tools maintain precision, minimize wear and tear for an extended lifespan, and provide enhanced resilience and performance with superior corrosion resistance.


Black Oxide treatment on heat sinks, connectors, casings, and fasteners preserves component precision and reliability, improves heat dissipation for optimal performance, and boosts durability for extended component lifespan.


Black Oxide coatings offer a unique blend of corrosion resistance and improved aesthetics, ensuring long-lasting firearms with decreased light reflection, smooth and reliable operation, and increased precision and durability. As an FFL and SOT we can handle and manage any serialized parts.

Hardware and Tools

Black Oxide coatings on hand tools, power tool components, fasteners, and decorative hardware maintain precision, extend lifespan with improved corrosion resistance and lubrication, and add a striking visual appeal for professional and polished tools.


For medical instruments, dental tools, orthopedic implants, and medical device components, Black Oxide coatings maintain accuracy and precision, improve visual appeal for a professional appearance, and ensure maximum hygiene with corrosion resistance for sterilization purposes.

Military and Defense

Black Oxide coatings on vehicle components, weaponry, communication devices, and protective gear in the military and defense industry enhance camouflage, ensure reliable performance and minimal maintenance, and provide enhanced durability and dependability for critical situations. Our process meets MIL-DTL-13924D Class 1 standards.

Oil and Gals

Black Oxide treatment on drilling equipment, valves, pumps, fasteners, and pipeline components ensures smoother operation, extended lifespan, and a robust defense against corrosion for components exposed to harsh environments.


Boost your business’s competitive edge and reputation with our high-quality, durable black oxide treatment services. Connect with our team today to schedule a consultation and discover how GSO-Metals can provide tailored black oxide solutions that enhance your products and contribute to your company’s success.

(307) 460-3041 3840 Misner Ln. Laramie, WY 82070

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