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When your operating environment demands more robust seamless rolled rings, look no further than high-quality alloy steel rolled rings from Ringmasters.

Manganese, chromium, nickel and molybdenum are some elements used to increase the performance of alloy steel after quenching and tempering. Depending on the chemistry and manufacturing process, the below are benefits that can be exhibited by forged alloy rings:

  • Wear resistant
  • High strength at high and low temperatures
  • Good machinability
  • Toughness and hardenability
  • Corrosion Resistant

Commonly Used Alloy 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)

4130 (G41300) 4140 Bearing Quality 4320 Bearing Quality 8620 (G86200) 8822 Bearing Quality 
4130 Aircraft Quality 4145 Modified 4330 Vanadium Modified 8620 Aircraft Quality A-182 Grade F11
4130 Bearing Quality 4150 (G41500) 4340 (G43400) 8620 Bearing Quality  
4140 (G41400) 4320 (G43200) 4340 Aircraft Quality 8630 Modified  
4140 Aircraft Quality 4320 Aircraft Quality 4340 Bearing Quality 8822 (G88220)  

Commonly Used Specifications

AGMA 2001-D04 ASTM A 148 ASTM A 541 ASTM A 788
AGMA 923AMS 2301 ASTM A 182 ASTM A 572 DIN 17210
AMS 6359 ASTM A 204 ASTM A 668 DIN EN 10084
AMS 6370 ASTM A 290 ASTM A 694 ISO 6336-5
AMS 6415 ASTM A 304 ASTM A 711 MIL-S-24093A(SH)

Alloy Rolled Ring Capabilities

Our team utilizes a forging process that produces seamless 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 6,000 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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