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Offerings

Grades of Steel

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We manufacture more than 500 grades of high-performance alloy, carbon, and micro-alloy steel.

Our products are custom-made in a variety of chemistries, lengths, and conditions, and are sold as special bar quality (SBQ), seamless mechanical tubing, or semi-finished components. The list below represents a sampling of the most popular grades that Metallus melts.

Explore the Metallus Difference

Talk to one of our sales team members about our grades of steel and custom options.

Steel Grades

1018
1020
1026
1030
1035
1040
1045
1050
1060
1080
1340

4027
4118
4130
4137
4140
4145
4320
4340
4620
4720
4820
5130
5160
A485
52100
8615
8617
8620
8630
8640
8720
8822

1026HS
1517VCbCa2
4145HSX
AF9628
4130ModSS (C110, C125)
D6A
HF1
Impact 7
MicroTec3M80

Available with any grades.

UHS250-35
UHS230-47
HS-220-18
HS-220-27

Quality Levels

Metallus produces steel to a range of quality levels in order to meet customers’ specifications for each project.

Improved fatigue life and power density start with clean steel. Our Ultrapremium™ certified air-melt technology takes cleanness to a higher standard. When applied to almost any grade of steel, this process dramatically lowers oxide inclusions over competing processes. The result: optimum performance and longer service at a lower cost than re-melted steels.

Customers generally use this steel, which is produced in accordance with industry specification AMS 2304, for extremely critical or highly stressed parts, as well as other applications involving additional exceptionally stringent requirements (magnetic particle inspection and macro-etch limits, for example). To meet these requirements, we employ exacting steelmaking, rolling, and testing practices.

Customers in the aircraft market count on high-performance, clean steel for important or highly stressed aircraft parts, including landing gear and brakes. We produce this quality level of steel in accordance with the industry specification AMS 2301. To meet these requirements, we employ exacting steelmaking, rolling, and testing practices.

Bearing quality generally applies to alloy steel bars and tubes that we manufacture for anti-friction bearings. Typically, this quality level ranges from standard alloy carburizing grades and high-carbon chromium grades. We produce these steels in accordance with American Society for Testing and Materials (ASTM) A534, A295, and A485 standards. We subject our bearing-quality steel to restricted melting and special teeming, heating, rolling, and conditioning practices to meet the rigid quality requirements.

In our electric arc furnace, which is our primary melting vessel, we melt steel scrap by passing electricity through carbon electrodes. The primary advantages of this type of furnace are that it allows for the extremely close control of temperature, heat analysis, and refining conditions required for the production of standard carbon and alloy steels. Electric furnace quality refers to a restriction of .025 percent maximum sulfur content and .025 percent maximum phosphorous content for the specified grade.

Commercial quality refers to the basic or standard quality level for alloy steel bars and tubes. Customers typically use this type of steel for less critical applications. We melt this quality level of steel to chemical ranges and limits, and inspect and test it to meet normal requirements for regular constructional alloy steel applications.

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