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At Ringmasters, seamless rolled rings are our sole focus. We have mastered the ability to deliver high-quality rings on-time, on-spec and per our customer’s most demanding requirements.

Carbon steel is generally the lowest costs option for steel. Depending on the grade, you can have carbon steels that are hardenable through quench and tempering, but you cannot achieve the super high strength of stainless steels. Carbon steel grades are commonly used if applications don’t require high strength or high temperature environments. Here are some common characteristics:

Plain Carbon Steel

Plain carbon steel (10xx) is the least expensive carbon steel and is good for welding. It contains low alloy content and high carbons which offer good toughness and surface hardness. Common grades include 1010, 1020, 1021, 1022, 1026, 1029, 1030, 1035, 1045 and 1080.

Low Carbon Steel

Low carbon steel (11xx) is a resulfurized carbon steel. Sulfur is added to the carbon which provides better machinability. Common grades include 1117, 1141 and 1146.

High Carbon Steel

These grades of carbon steel contain manganese for hardening. Common grades include 1541V and 15B22. 1541V is similar to 1040/1045 but without the increased cost and 15B22 can be welded and heat treated for higher hardness.

A Grades

Carbon steels such as A360LF2 or A360LF3 are corrosion resistant and great for oil field applications. These plain carbon steels contain alloying elements like manganese or nickel for improved hardenability or toughness and are used in medium strength applications with the intention of welding.

Commonly Used Carbon 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)

1020 (G10200) 1030 (G10300) 1080 (G10800)
1026 (G10260) 1035 (G10350) 1141 (G11410)
1029 (G10290) 1045 (G10450) A-350 Grade LF2

Commonly Used Specifications

ASME SA-105 ASTM A 105 ASTM A 350 ASTM A 668 MIL-S-24093A(SH)
ASME SA-350 ASTM A 148 ASTM A 515 ASTM A 694 MIL-S-46172A(MR)
ASME SA-516 ASTM A 266 ASTM A 534 ASTM A 711  
ASTM A 27 ASTM A 285 ASTM A 537 ASTM A 788  
ASTM A 36 ASTM A 291 ASTM A 551 DIN EN 10084  

Carbon 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 7,000 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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