Ringmasters specializes in the forging of custom seamless rolled rings from martensitic, austenitic, and precipitation hardening stainless steels. Each type has unique characteristics beneficial to specific applications.

Martensitic Stainless Steel

Martensitic stainless steel is used for applications where high strength is needed in hot or corrosive environments. It's strengthened through quench and tempering heat treatment. Corrosion resistance of these materials is generally less than that of the other types. Its strength, hardness and wear resistance, however, can be much higher depending on the composition and heat treatment cycles used. Martensitic grades are commonly used for rolled rings when the application requires high hardness and wear resistance in corrosive environments, such as bearings.

Austenitic Stainless Steel

Austenitic stainless steel is ideal for highly corrosive environments or when high toughness or ductility is needed. It’s also beneficial for applications facing very low temperature and magnetic permeability. Austenitic steels are an excellent rolled ring option when non-ferrous options are too expensive.

PH Stainless Steel

Precipitation hardening (PH) stainless steels is recommended for applications requiring extremely high strength and fracture toughness in hot and corrosive environments. It can be solution annealed, machined in a soft state, and then aged to increase strength. PH steel grades are used for rolled rings when martensitic stainless can't handle the application or when extremely high dimensional tolerances are needed on parts machined prior to heat treatment.

Commonly Used Stainless Steel Grades at Ringmasters

Ringmasters carries an extensive inventory of raw material. The table below lists the most common grades and specifications. However, if you have an inquiry about a grade not listed below please reach out to our technical sales team to learn more.

Stainless Steel Rolled Ring Capabilities

Our team utilizes a forging process that produces seamless stainless steel rolled rings with a comprehensive internal structure and circumferential grain flow, delivering superior mechanical properties. Precision rolling processes provide excellent concentricity and surface smoothness. We specialize in small-quantity orders, but can also accommodate larger quantities. Our capabilities include:

• Weight from 100 lbs. to 3,000 lbs.
• 13" to 125" outside diameter
• 8" to 116" inside diameter
• Up to 24" height
• Up to 18" wall thickness

Downstream Processing

We take our commitment to our customers seriously. As an ISO 9001:2015 certified manufacturer, Ringmasters inspects 100% of our rings to ensure conformance and performs testing per customer specific requirements. All non-destructive testing is performed in-house by our Level III technicians.

• Heat treatment
• Machining
• Parting, splitting and segmenting
• Shot blasting
• Hardness testing
• Ultrasonic inspection
• Magnetic particle inspection
• Mechanical analysis (charpy and tensile)
• Chemical analysis
• Positive material identification

For high-quality carbon steel rings, Ringmasters is your solutions provider. We're available to answer questions about our carbon steel ring services.