Wholesale Price ASTM 52100 Bearing Steel | 1.3505 | 100Cr6 | SUJ2 | EN31 Supply to Bahrain
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.
A makeshift arc reaction chamber. Small enough to sit on the desktop, but powerful enough to melt steel, within minutes.
Some quick links to a few of the materials I used:
[✓] Lantern battery: http://amzn.to/2cgnKxN
[✓] Forstner Bit: http://amzn.to/2c1Ja3V
[✓] 3/8 Drill bit: http://amzn.to/2cgl6rL
Electric Deck of Cards: https://goo.gl/mkamyU
Laser Blowgun: https://goo.gl/lu3o0M
Matchbox Rockets: https://goo.gl/jguunj
Soda Cap Container: https://goo.gl/koUl6y
See What Else I’m Up To:
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Electrical arc furnaces pose risks of electric shock, fire hazard, and toxic fumes depending on what material you’re working. Dust from refractory brick should never be inhaled, as it can damage lungs and cause long term respiratory challenges. This project can reach temperatures in excess of 3,000ºF (1,648ºC) which is well beyond the melting point of hobbyists. Caution, care and expert planning are required to mitigate risks. Use of this video content is at your own risk.
Music By: Scott & Brendo (“Through The Flame” – Instrumental) http://bit.ly/ScottBrendoiTunes
Project Inspired By:
This project was originally inspired by Theo Grey and his book, “Mad Science”. After seeing the concept, I couldn’t find any information anywhere on the internet or in libraries about arc furnace experiments, so I experimented on my own until achieving these results.
Project History & More Info:
I made a homemade stick welder from old microwave parts (http://bit.ly/HomemadeStickWelder) and experimented with it’s power by sparking an arc between two carbon electrodes I pulled out of a “heavy duty” lantern battery.
Although I haven’t verified it, I believe any stick welder can be used to power the mini arc furnace, and for most hobbyists, that would definitely be the easier and safer way to go. I just don’t own a welder, so I used the one I made instead.
You can get refractory brick from major hardware stores online, but to find something local, I did a Google search for “refractory materials” in my city. I called a couple of local companies and asked if they’d sell to the general public, and most did.
At their warehouse, I identified the 3” x 4.5” x 9” Alumina-Silica Bricks as the kind I needed, which are extremely lightweight, and capable of withstanding temperatures used in steel working.
Most local refractory suppliers will only sell the bricks in cases, but luckily they had an open case in the shop, and sold me a single brick for $6. However, I later went back and got a case of 10 for about $33, making the cost of each brick around $3.30.
I found the furnace can be powered off 120v mains power by center tapping the arc welder unit, however it performs tremendously better on 240v without any modifications. Impressively I didn’t even need to use The “Scariac” (http://bit.ly/Scariac) to ballast it. In all my experimenting, it worked just fine on a 20 amp breaker by plugging it in and sparking the arc. A commercial welder should give your circuit breaker the same electrical protection because it will limit the current that can be drawn.
The longest I’ve run the unit continuously is around 3-4 minutes, and the electrodes get so hot at that point they can seriously burn your hands, or melt your gloves. I realize it would be easy to modify them to have insulating handles and run it longer, however I believe that’s beyond the scope of this project, and there is good risk that the insulation on the cables would start melting and the system would self destruct.
I designed the furnace so you can easily make two of them from one brick, and you’ll see how I made them in the project video, “How To Make The Mini Arc Furnace”.
Компания “Грин-Климат” на рынке климатического оборудования более 6 лет.
Приобретенный нами опыт, позволяет решать технически сложные задачи в кратчайший срок и с надлежащим качеством.
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