EN31 Bearing Steel -

EN31 Bearing Steel

Qilu is an EN31 steel manufacturer that offers a wide selection of sizes, shapes, and thicknesses.

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Professional EN31 Bearing Steel Supplier

EN31 Alloy Steel round rods, EN31 Alloy Steel forging, sheet, coil and profiled strip, Deformed steel, flat steel, mould, steel wire, have all specifications. With production experience, strict control EN31 Alloy Steel chemical composition and EN31 Alloy Steel mechanical properties.From casting, forging, steel to hot and cold rolling process, heat treatment, etc, we have the control of professional engineers.

Main Functions

Bars: Rolling size range:10-260mm

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Forgings size range:70-800mm

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Pipes and tubes:

The outside diameters and wall thicknesses are available in a variety of sizes, commonly ranging from 1/2″ to 12″ OD, and the WT depending on the specification and application.

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Plate: thickness size: 10-500mm; Width size : 200-810mm

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Forged rings: Maximum outer diameter size up to 1000mm

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Grade of Different Country And Chemical Composition

DIN 100Cr6 – DE

DIN 1.3505 – DE

NF 535A99 – GB

NF EN31 – GB

SS 2258 – SE

ISO 100Cr6 – ISO

ISO 1.3505 – ISO

SAE 52100 – US

Chemical Composition

Grade	C	Si	Mn	P	S	Cr
EN31	0.95-1.10	0.10-0.35	0.40-0.70	0.040 Max	0.050 Max	1.20-1.60

Heat Treatment Steps

EN31 is usually supplied in the annealed and machineable condition. Re-annealing will only be necessary if the steel has been forged or hardened. To anneal, heat the EN31 steel slowly to 800-810°C, soak well and allow to cool in the furnace.

When parts are to be heavily machined, stress relieving will be beneficial prior to hardening. Heat the EN31 carefully to 700°C, soak well and allow to cool in air.

Heat slowly to the hardening temperature of 800-820°C. Maintain until thoroughly soaked through. Plenty of time must be given for this soaking and then quench in oil.

Temper according to the purpose for which the tools are required, generally between 150°C and 300°C. Soak well at the selected temperature and soak for at least one hour per 25mm of total thickness. Cool slowly in air.

Qilu Bearing Steel Series

52100 Bearing Steel

EN31 Bearing Steel

GCr15 Bearing Steel

Application Of EN31 Bearing Steel

Bearing Manufacturing

EN31 steel is widely used to manufacture a variety of bearings, including ball bearings, roller bearings, and needle bearings. These bearings excel in applications that are subject to high loads and require high precision.

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Automotive Industry

In the automotive industry, EN31 steel is used to manufacture wheel hub bearings, drivetrain components, and engine components. This steel is selected for its high wear resistance and ability to retain its shape in extreme temperatures.

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Aerospace Industry

In the aerospace industry, EN31 steel is used to manufacture critical components of aircraft landing gear, flight control systems, and jet engines. This material is selected for its high stress tolerance and high temperature resistance.

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Gear and Shaft Manufacturing

EN31 steel is used to manufacture transmission components such as gears and shafts. This steel is an ideal choice due to its excellent mechanical properties and good machinability.

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Qilu EN31 Bearing Steel

Best EN31 Bearing Steel Manufacturers

EN31 bearing steel, also known as 1.3505 steel, is commonly used in bearings, transmission system components, engine components, flight control systems and key components of jet engines.

EN31 is a high-carbon, chromium-containing low-alloy steel that is hardened and particularly suitable for use as bearings. It also has high hardness, compressive strength and wear resistance, making it very suitable for wear-resistant mechanical parts and presses.