High Carbon Chromium Alloy Steel Round Bar GCr15 / EN31 For Mechanical

High Carbon Chromium Alloy Steel Round Bar GCr15 / EN31 For Mechanical

GCr15 is a high carbon chromium bearing alloy steel with low alloy content.

It has high hardness, uniform structure, good wear resistance and high contact fatigue after quenching and tempering.

Equivalent grades

Chemical Composition(%)

Features

Belong to a kind of high carbon chromium bearing steel which most widely used width a good performance and less alloy content.

High hardenability and good comprehensive performance. Good machinability after spheroidizing annealing.

High hardness, uniformorganization, good wear-resistance, high contact fatigue performance after quenching and tempering. And good hot working performance.

Applications

For making all kinds of bearing ring and rolling element.

For example: steel ball roller and ferrule of internal combustion engine, electric motorcycle, automonilrd, tractors, machine tools, rolling mill, boring machine, mining machinery, general machinery, high load and high speed roating mechancial transmission bearing.

Except ball bearing and bearing ring, sometimes also used to make tools, such as pumching die, measuring tool.

Delivery condition

Hot rolled or forged, black surface

Hardenss: annealed to 207-229HB

The main features and uses

After quenching and tempering high hardness and uniform, wear resistance, anti-lift fatigue strength. Hot workability is good. Good machinability after spheroidizing annealing, but sensitive to white spots.

Mainly used in the manufacture of internal combustion engines, electric locomotives, machine tools, tractors, rolling equipment, drilling machines, railway vehicles and mining machinery and other drive shaft on the ball, roller and sleeve, etc.

More about GCr15 high carbon alloy steel

The steel cold plastic medium, cutting performance in general, poor welding performance, the formation of white point sensitive performance, temper brittleness.

GCr15 is the most commonly used high-carbon chromium bearing steel with high hardenability and high and uniform hardness after heat treatment.

Abrasion resistance is superior to GCr9, high contact fatigue strength, good dimensional stability and corrosion resistance, cold deformation plasticity, general machinability, poor weldability, sensitive to the formation of white spots, the first temper brittleness.

In the manufacture of ball bearings, for rolling the wall thickness of 12mm. Outer diameter <250mm H-class to C-level bearing sleeve, 25.4-50.8mm diameter ball; diameter <22mm roller, but also can be used as bearing Large load. High wear resistance.

High elastic limit. High contact fatigue strength of other mechanical parts and precision measuring tools such as cold die.

Our service

We provide quality special steel for all industries.

Orders of any size, any length, ship fast

We carry a unique inventory of specialty special steel

Provide related value-adding services :

metal cutting, sizing, machining (blanking, milling, grinding), and heat treatment.

Sawing for small or large quantities, sawing-to-size.

Excellent customer service

Contact Us

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Guangzhou ChangFeng Steel Co., Ltd. is a professional special steel company, which specialized in exporting mould steel products based in China.With twenty years experience in special steel industry, our main products are Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Structural Steel, Tool Steel, Stainless Steel, Carbon Steel and Forged Block.

To ensure provide high quality products to customers, we have close cooperation with many Chinese first class special steel enterprises, including Baosteel Group, Dongbei Special Steel, Changcheng Special Steel, Hongsheng Heavy Industry, Xingcheng Special Steel, Daye Special Steel. We have thousand tons of stock materials in our own factory and also can provide processing services to customers. We are full of export experience for many years, the product covers America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and Middle-East.

After years of development, the company has established a complete quality management and export service system. We have a group of experienced and competent elites and is capable of offering the best service to clients. Our company equips with large-sized Vertical saw machines, Horizontal saw machines, Milling machines, Grinding machines and other advanced equipments to provide customers with cutting and other processing services. All the products should be inspected the metallographic analysis, hardness, ultrasonic flaw detection and other strict inspection processes, which meet the standards of DIN, AISI, JIS and GB to ensure their function and quality.

Our company keeps the principle of “sincerely cooperation, endless striving for perfection”. We desire to establish the long-term mutual beneficial and win-win relationship with clients all over the world.