Chrome Steel Balls
( AISI 52100, En31, SUJ2, 100Cr6, 100C6 )
High Carbon High Chrome, Bearing Steel, Chrome Alloy Steel Ball

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Chrome steel ball, or high carbon high chrome steel balls, is actually an alloy steel ball which owes its enhanced properties to the presence of larger proportions of special alloying elements such as chromium, manganese and silicon than are ordinarily present in carbon steel.

Technocon Engineers manufacture a wide range of forged chrome steel balls.

■ Steel Material: Chrome alloy steel; AISI 52100, EN-31, SUJ-2, 100Cr6, 100C6, DIN 5401. Details...

■ Sizes (Diameters): 1.50 mm to 12.7 mm and
1/16" to 1/2" diameter. Details...

■ Grades (Tolerances): AFBMA 20 to 2000.
Precision bearing grade to grinding media grade. Details...

■ Production sequence of chrome steel ball.

■ Advantages of Technocon's chrome alloy steel balls.

Applications of chrome steel balls.

Some common uses of chrome steel balls are as:

Vibratory polishing, burnishing steel media; Details..

Precision steel balls for roller ball bearings;
Ball bearings in bicycles;                           Details...

Ball mill media, grinding steel balls and
Grinding media for cocoa, chocolate liquor; Details...

Agitators in paint spray cans, In plating bath of zinc and lead, Casters, Drawer Slides, Door Locks. Details...

	High Carbon High Chrome Balls, Chrome Steel, Bearing Steel Balls. AISI 52100, EN 31, Suj 2, 100Cr6, 100C6. DIN 5401, Class II to VI.

Properties of Chrome Steel Balls

● Corrosion Resistance: Stainless Steel > Chrome Alloy Steel > High Carbon Steel.

● Hardenability: The above stainless steel are hardenable by heat treatment upto the core. These are generally through hardened upto 58-63 HRC (Rockwell C).
Custom hardness is also possible for bulk orders.

● Magnetism: These are fully magnetic.

● Passivation: Chrome steel balls are prone to atmospheric oxidation and rusting in corrosive or humid environment.
These are protected by rust preventive oils. Hence, oil free balls in chrome steel are not offered.

Chrome Steel Balls Vs
Carbon Steel Balls

For better performance and life in most of the above applications chrome steel balls instead of ordinary carbon steel ball (round / spherical) are preferred.

These steel balls have better corrosion resistance, hardenability and toughness.

The chrome alloy steel balls can be thorough hardened (upto the core) to 58-63 HRc (Rockwell C)instead of just case hardened or carburized.

Material Composition of Chrome Alloy Hardened Steel Ball
(High Carbon High Chrome Steel, Bearing Steel - Thorough Hardened)

	Carbon C	Manganese Mn	Silicon Si	Phosphorus P	Sulphur S	Nickel Ni	Chromium Cr	Hardness Rockwell C
EN 31	0.90-1.10	1.10 max	0.10-0.35	0.05 max	0.05 max	Nil	1.00-1.50	58-63 HRc
AISI 52100	0.95-1.10	0.20-0.50	0.35 max	0.025 max	0.025 max	Nil	1.30-1.60	58-63 HRc

SUJ-2, 100Cr6, 100C6, DIN 5401 chrome alloy steel has similar material composition as given above.
Rust preventive oil: Applied on chrome steel balls to save from rusting and corrosion.
Packing: Done in numbers, pieces or by weight. VCI paper or bags are used wherever necessary.
For Spherical Steel Chrome Ball Technical Data; Weight per 1000 pieces for various diameters, click here.

Effects of Alloying Elements in Chrome Steel Balls

Alloying Element: Any metallic element added during the making of steel for the purpose of increasing corrosion resistance, hardness or strength. The metals used most commonly as alloying elements in chrome steel include chromium, manganese and silicon.

The Basics
Steel is a combination of iron and carbon. In its softened state, the base is a matrix composed of simple iron molecules (ferrite), in which are suspended molecules of iron carbide (cementite). When steel is heated to prescribed temperatures, then cooled at a specific rate, it undergoes physical internal changes which manifest themselves in the form of various micro-structures such as pearlite, bainite, and martensite. These micro-structures (and others) provide a wide range of mechanical properties, making steel an extremely versatile metal.

Carbon
The presence of carbon in iron is necessary to make steel. Carbon is essential to the formation of cementite (as well as other carbides), and to the formation of pearlite, spheroidite, bainite, and iron-carbon martensite. The hardness of steel (or more accurately, the hardenability) is increased by the addition of more carbon, up to about 0.65 percent. Wear resistance can be increased in amounts up to about 1.5 percent. Beyond this amount, increases of carbon reduce toughness and increase brittleness.

Manganese
Manganese slightly increases the strength of ferrite, and also increases the hardness penetration of steel.

Chromium
Chromium (Cr) has a tendency to increase hardness penetration. Chromium can also increase the toughness and wear resistance of steel. Probably one of the most well known effects of chromium on steel is the tendency to resist staining and corrosion. Steels with 12% or more chromium are referred to as stainless steels.

Silicon
Silicon is used as a deoxidizer in the manufacture of steel. It slightly increases the strength of ferrite, and when used in conjunction with other alloys can help increase the toughness and hardness penetration of steel.

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Chrome Steel Balls ( AISI 52100, En31, SUJ2, 100Cr6, 100C6 ) High Carbon High Chrome, Bearing Steel, Chrome Alloy Steel Ball

Chrome Steel Balls
( AISI 52100, En31, SUJ2, 100Cr6, 100C6 )
High Carbon High Chrome, Bearing Steel, Chrome Alloy Steel Ball