Top Suppliers ASTM 52100 Bearing Steel | 1.3505 | 100Cr6 | SUJ2 | EN31 Supply to Cannes
ASTM A295 is specification which covers 52100 high carbon bearing quality steelto be used in the manufacture of anti-friction bearings. And 52100 bearing steel is the most common steel grade in ASTM A295 standard for high-carbon anti-friction bearing steel. What is 52100 bearing steel? AISI/ASTM 52100 bearing steel is a high carbon, chromium containing low alloysteel that is through hardening and noted in particular for use asbearings. 52100 bearing steel is one kind of special steel with ...
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is specification which covers 52100 high carbon bearing quality steel
to be used in the manufacture of anti-friction bearings. And is the most common steel grade in ASTM A295 standard for high-carbon anti-friction bearing steel.
What is 52100 bearing steel?
52100 bearing steel is a high carbon, chromium containing low alloy
steel that is through hardening and noted in particular for use as
52100 bearing steel is one kind of special steel with features of
high wear resistance and rolling fatigue strength. High-carbon chromium
bearing steel, engineering steel and some types of stainless steel and
heat resistant steel are used as materials of bearings and for other
Advantages of Chrome Bearing Steel 52100:
Superior hardness, 60-67 on Rockwell hardness scale (Rc) at room temperature
High carbon chrome alloy steel
Operates continually at temperatures up to 120°C
Used to produce precision ball bearings and roller bearings
Long working life
1. Relevant Steel Specification of ASTM 52100 Bearing Steel
|Standard||ASTM A295||DIN 17230|
2. Chemical Composition of 52100 Bearing Steel and Equivalents
3. Mechanical Properties of ASTM A295 52100 Bearing Steel
|Bulk modulus (typical for steel)||140 GPa||20300 ksi|
|Shear modulus (typical for steel)||80 GPa||11600 ksi|
|Elastic modulus||190-210 GPa||27557-30458 ksi|
|Hardness, Knoop (converted from Rockwell C hardness)||875||875|
|Hardness, Rockwell C (quenched in oil from 150°C tempered)||62||62|
|Hardness, Rockwell C (quenched in water from 150°C tempered)||64||64|
|Hardness, Rockwell C (quenched in oil)||64||64|
|Hardness, Rockwell C (quenched in water)||66||66|
|Hardness, Vickers (converted from Rockwell C hardness)||848||848|
|Machinability (spheroidized annealed and cold drawn. Based on 100 machinability for AISI 1212 steel)||40||40|
52100 Steel Physical Properties
|Density||7.81 g/cm3||0.282 lb/in³|
52100 Alloy Steel Thermal Properties
|Thermal expansion co-efficient (@ 23-280°C/73.4- 36°F, annealed)||11.9 µm/m°C||6.61 µin/in°F|
|Thermal conductivity (typical steel)||46.6 W/mK||323 BTU in/hr.ft².°F|
4. Forging of A295 52100 Bearing Steel
52100 alloy steel is forged at 927 to 1205°C, and should not be forged
below 925ºC. A post-forge equalization treatment is recommended at 745ºC
for 4-6 hours followed by air cooling for SAE/AISI 52100 steel.
6. Heat Treatment for ASTM 52100 Bearing Steel
52100 alloy bearing steel is heated at 816°C followed by quenching in
oil. Before performing this process, it is subjected to normalizing heat
treatment at 872°C followed by slowly cooling in order to reduce the
AISI 52100 bearing steels alloy can be hot worked at 205 to 538°C.
AISI 52100 bearing steel can be cold worked using conventional techniques in the annealed or normalized conditions.
For spheroidize anneale, the following isothermal anneal is recommended:
1500ºF (815ºC) for 3 hours
1350ºF (735ºC) for 4 hours
1250ºF (675ºC) for 3 hours
Slow cool to 1000ºF (540ºC) then air cool.
AISI 52100 alloy bearing steel could be hardened by quenching in water from 801-829 degree or quench in oil from 816-842 degree.
Temper to desired hardness as indicated by tempering curves after water or oil quench.
5. Applications of 52100 Bearing Steel
steel 52100 grade bearing steel is mainly used for the manufacture of
aircraft bearings and other highly stressed parts. This steel grade
52100 steel is preferably vacuum arc re-melted to give optimum
Typical applications: Bearing Manufacture, CV joints, ball screws, gauges, knife etc.
Designer Mariëlle Leenders has experimented with fabric that features shape memory wire either woven into the material or added later as one or more lines of stitching. Her Moving Textiles (2000) react to differences in temperature by shrinking, creasing, changing structure or rolling up. Lines of stitching added to the basic material in certain places cause the fabric to creep up when temperatures rise.
Fabrics incorporating wire containing shape memory alloys (SMA) vary in form according to changes in temperature. The thin wire is made of an alloy based on nickel and titanium. This metallic material belongs to a group of related substances referred to as shape memory alloys (SMA). They possess the ability to return to some previously defined shape or size when subjected to the appropriate thermal procedure. Generally, the materials can be plastically deformed at some relatively low temperature, after which -upon exposure to some higher or lower temperature they revert to their original shapes. The temperature at which the material changes in form can be programmed precisely at any desired temperature between -50° and + 100°C. Materials that exhibit shape memory only upon heating have a one-way shape memory. A shape memory alloy deformed at a temperature slightly above its transformation temperature has a high degree of elasticity.
When a similar heating process is applied to Moving Textiles, a material that features shape memory wire, the fabric reacts to later changes in temperature (of more than 2.5°C) by shrinking, creasing, changing structure or rolling up. Normal fluctuations in body temperature, therefore, cause no reaction. But clothing made of Moving Textiles can be programmed to respond to the transition from outdoor temperatures to heated indoor spaces. Examples are sleeves that automatically roll up and down, a jacket that opens and closes on its own, and a shirt that expands and contracts in both length and circumference. Other possibilities are blinds that descend when exposed to warm sunlight and roll back up when the temperature drops, moving lampshades, etc. Moving Textiles can be used for both decorative and functional purposes.
For more information:
Forcing a Patina (Carbon Steel Knife Maintenance)