15 Years manufacturer ASTM 52100 Bearing Steel | 1.3505 | 100Cr6 | SUJ2 | EN31 Wholesale to Wellington
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.
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The Young in Heart (1938) (Excerpts)
Director: Richard Wallace
Production Company: Selznick International Pictures
When the first real “Car of the Future” appeared to the public?
I guess it happened in a 1938 movie called “The young ln Heart”. The name of the car in the film is “Flying Wombat” but in the reality this streamlined black beast is a Phantom Corsair, a six-passenger coupe that was designed by Rust Heinz, a member of the H. J. Heinz family, and Maurice Schwartz of the Pasadena, California based Bohman & Schwartz coachbuilding company. Heinz planned to put the Phantom Corsair, which cost approximately $24,000 to produce in 1938 (approximately $400,000 in 2008 dollars) into limited production at an estimated selling price of $12,500. However, Heinz’s death, shortly after the car was completed, ended those plans. The automobile was featured as the “Flying Wombat” in the David O. Selznick film The Young in Heart (1938) starring Douglas Fairbanks, Jr., Paulette Goddard, Janet Gaynor, and Billie Burke. Heinz and his car were also featured in a segment of the Popular Science film series in 1938.
The other “Flying Wombats” we see in the showroom sequences were just static copies of the car, probably made of wax.
The unique 1938 Phantom Corsair now resides in the National Automobile Museum (The Harrah Collection) in Reno, Nevada.
With a height of only 147 cm (58 in.), the steel and aluminum body had no running boards, fenders or door handles. Instead, the doors could be opened using buttons located on the outside and on the instrument panel. To match the advanced design, Heinz chose the most advanced chassis available in the United States at that time to fit the body onto, the Cord 810. The V8 engine equipped Cord also featured front wheel drive and an electrically operated four-speed gearbox, as well as a fully independent suspension and adjustable shock absorbers. To accommodate the large body, various changes were carried through on the chassis. The car’s lower frame was made of chromoly steel and the upper frame was constructed of electrically welded aviation steel tubing. Power for the 2-ton / 4500 lb. (2000 kg) Phantom Corsair came from a modified Cord 810 Lycoming 8-cylinder unit, supercharged by Andy Granatelli to produce about 190 hp. The aerodynamic body enabled the car to reach speeds of up to 115 miles per hour (185 km/h), not bad at all for 1938.
Anyway, in my opinion, the production of the “Cars of the Future” (intended as a whole brand new concept of car making) started in 1949, creating an overall concept of Automobile that lasted on the market until the early 70ies.
Here we celebrate the 70th anniversary of the Phantom Corsair with some good quality excerpts from “The Young ln Heart”, with part of the shots regarding this outstanding and completely forgotten automobile.
Editing by ROMANO-ARCHIVES.
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