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At Ringmasters, we're available to help pinpoint the best stainless steel grade for your end-use application. Utilizing the Scot Forge team of knowledgeable forge engineers, metallurgists and technical sales, we will work closely with you and your team to ensure all requirements are met or exceeded.

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.

Grade Names (UNS)

Grade Names (UNS) Grade Type
17-4 PH Air Melt (S17400) Precipitation Hardening Stainless Steel
T-304 / T-304L (S30400 / S30403) Austenitic Stainless Steel
T-316 / T-316L (S31600 / S31603) Austenitic Stainless Steel
T-410 (S41000) Martensitic Stainless Steel

Commonly Used Specifications

Commonly Used Specifications Grade Type
ASME SA-182 Austenitic Stainless Steel
ASTM A 182 Austenitic Stainless Steel
ASTM A 240 Austenitic Stainless Steel
ASTM A 276 Austenitic Stainless Steel
ASTM A 473 Austenitic Stainless Steel
ASTM A 829 Austenitic Stainless Steel
ASTM A 148 Martensitic Stainless Steel
AMS 5613 Martensitic Stainless Steel 
ASTM A 473 Martensitic Stainless Steel 
ASTM A 182 Martnesitic Stainless Steel
ASTM A 564 Precipitation Hardening Stainless Steel
ASTM A 705 Precipitation Hardening Stainless Steel
ASTM A965 Stainless Steel

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.

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OEM Capabilities

Combining the experience of two of the most successful open-die and rolled ring forging companies in North America (Scot Forge and Frisa) Ringmasters has the capabilities and experience to scale up its resources to serve the needs of large OEM companies who compete globally in the most demanding market-environments.

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<span>Quality &</span> Certifications

Quality & Certifications

With our commitment to strict ISO 9001:2015 quality standards, Ringmasters consistently achieves customer acceptance rates of over 99% on product quality.

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