Custom Forged Stainless Steel Alloys
R&M Forge and Fittings is a supplier of stainless, duplex stainless, and super duplex stainless steel forgings.
Stainless steel was developed to degrade less easily than steel due to a minimum of 11% chromium content. Unlike carbon steel, stainless steel is extremely resistant to corrosive environments and applications such as high humidity, salt water, or frequent rain. Passivation properties of stainless build a protective layer when the material is exposed to oxygen. The forging process increases these properties along with tensile strength, grain uniformity, and other factors.
Duplex stainless steel was developed by the Swedish to combat corrosion caused by chloride and other aggressive chemicals. It contains equal portions of ferrite and austenite, hence its name. Duplex steels are also known for their higher yield strength than many austenitic stainless steels. Forging these materials further increases yield strength and corrosive resistant properties making this material last for extremely long periods under constant use.
Super duplex stainless steel contains an even higher content of chromium that provides even greater resistance to caustic solutions such as acids and acid chlorides. Super duplex steel is heavily used in the pulp & paper, and oil & gas industries thanks to its extreme corrosion resistance meaning parts last longer in high-stress applications.
Stainless, Duplex and Super Duplex Grades
Stndard stainless steel resists corrosion because it carries a minimum of 11% chromium, which forms a passive oxide layer when exposed to oxygen. That resistance holds up against high humidity, saltwater, and frequent rain, and forging the material further improves tensile strength and grain uniformity compared to cast or rolled stock.
Duplex stainless steel forgings split their microstructure evenly between ferrite and austenite, a composition developed in Sweden to fight chloride-driven corrosion. The structure gives duplex grades higher yield strength than most austenitic stainless steels, and forging tightens that structure further, extending service life in constant-use applications.
Super duplex stainless steel raises the chromium content again, adding resistance to caustic solutions and acid chlorides. It's the standard choice in pulp and paper and oil and gas equipment, where components run for years in high-stress, corrosive environments without replacement.
| Stainless Steel | 303, 304/L/H, 316/L/H, 310, 317/L, 321/H, 347/H, 410, 416, 420, 440, 17-4, 254 SMO, Nitronic 50®, Nitronic 60®, Duplex & Super Duplex SS, 2205 Duplex, Super Duplex 2507, Zeron 100®, Ferralium 255® |
Grades, Capacities, and Forged Stainless Steel Rings and Blocks
As a custom stainless steel forging manufacturer, R&M forges alloys to your print rather than shipping off-the-shelf stock, including 304/L/H, 316/L/H, 310, 317/L, 321/H, 347/H, 410, 416, 420, 440, 17-4, 254 SMO, Nitronic 50, Nitronic 60, 2205 duplex, 2507 super duplex, Zeron 100, and Ferralium 255. Every open-die and rolled-ring run is engineered to the grain structure, yield strength, and dimensional tolerance your ASTM, ASME, or API print calls for, producing corrosion-resistant open-die forgings that hold up in the field, not just on paper.
Our forged stainless steel rings and blocks cover a wide range of dimensions:
- Seamless Rolled Rings up to 250" OD
- Sleeves up to 205" long
- Forged Bars up to 350" long
- Discs, Blocks & Rectangles up to 60,000 lbs.
Why Manufacturers Choose R&M Forge and Fittings
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Volume purchasing power that keeps material costs and lead times competitive
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An in-house logistics team that expedites orders instead of waiting on a third party
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On-time, right-the-first-time delivery backed by a quality program built to ISO 9001
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Multiple finish and material solutions for stainless, duplex, and super duplex specs
That's what procurement teams get when they work with a custom stainless steel forging manufacturer built around volume, logistics, and quality control. We supply stainless, duplex, and super duplex forgings to companies across oil and gas, chemical processing, pulp and paper, marine, and power generation, industries where corrosion resistance and dimensional accuracy directly affect safety and uptime. See the industries we serve for the full list.
FAQs
How is a forged stainless steel ring different from a cast one?
Forging works the stainless steel under pressure to align its grain structure along the shape of the part, which increases tensile strength, reduces porosity, and improves fatigue resistance compared to casting. That's why forged rings, sleeves, bars, and discs are the standard choice for high-pressure or corrosive service, where a casting defect can turn into a field failure.
Can R&M Forge and Fittings produce custom stainless steel forgings outside your standard capacities?
Yes. As a custom stainless steel forging manufacturer, we don't limit customers to standard sizes. If your print calls for a grade, dimension, or finish outside the ranges listed above, contact our sales team with your specifications and we'll work through a solution with you.
What quality standards does R&M Forge and Fittings meet on stainless steel forgings?
Our quality control program operates in compliance with ISO 9001. Every stainless, duplex, and super duplex order is forged to the material, dimensional, and grain-structure requirements your ASTM, ASME, or API print specifies.
Contact one of our sales representatives today
to inquire about our duplex and super duplex stainless steel forgings
or call us today at 713.896.4081