Alloy Steel Spacer Flanges by MTS Forge

MTS Forge manufactures alloy steel spacer flanges up to 14 inches in size. Our production capabilities cover a broad range of dimensions to suit applications in commercial nuclear, aerospace, power generation, and industrial sectors. For custom sizes outside standard dimensions, our team can evaluate requirements and develop appropriate tooling from our extensive in-house inventory.

We work with a wide range of alloy steel grades as well as stainless steels and high-performance alloys. Our metallurgical expertise allows us to source and forge materials suited to specific mechanical, corrosion-resistance, and temperature requirements. Contact our team with your material specification and we will confirm availability and suitability for your application.

MTS Forge operates under a comprehensive Quality Assurance Program meeting Mil I 45208, NCA 3800, and Mil Q9858 standards. These certifications ensure complete traceability throughout the production process — a mandatory requirement for commercial nuclear, defense, and aerospace procurement. All documentation is maintained to support rigorous customer and regulatory audit requirements.

Yes. We perform in-house normalizing heat treatment at our Coatesville, PA facility. Normalizing refines uneven grain structures created during the forging process, producing a uniform microstructure that improves tensile strength, toughness, ductility, and machinability. This is the most commonly specified heat treatment for hot forgings and is performed across our full range of alloy steel products.

Yes. Our in-house rough machining capability brings forged spacer flanges to near-net shape immediately after forging, removing flash, surface irregularities, and dimensional excess. This eliminates the need for customers to source a separate machining vendor, reducing lead times, handling risk, and overall procurement cost while ensuring components arrive dimensionally closer to final specification.

MTS Forge supplies alloy steel spacer flanges to commercial nuclear, aerospace, defense, power generation, chemical processing, machine manufacturing, and gas and petroleum industries. Our quality programs and metallurgical expertise make us particularly well-suited to sectors where strict documentation, material traceability, and mechanical consistency are non-negotiable requirements.

Lead times depend on flange size, material grade, quantity, and whether heat treatment or machining is required. Because all major production steps — forging, heat treatment, and rough machining — are performed in-house at our Coatesville facility, we can minimize handoffs and reduce overall turnaround compared to multi-vendor supply chains. Contact us with your specifications for an accurate lead time estimate.

Forged alloy steel spacer flanges offer superior grain flow alignment, enhanced mechanical strength, and better fatigue resistance compared to parts machined from bar stock. Forging also reduces material waste by producing near-net shapes, which lowers raw material consumption and machining costs. The result is a stronger, more consistent component produced at a lower unit cost — a key advantage for high-volume industrial procurement.