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  • 52100 Chromium Steel Sphere, Grade G25, Reflective Finish, Precision Tolerance, Inch, ASTM A295
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52100 Chromium Steel Sphere, Grade G25, Reflective Finish, Precision Tolerance, Inch, ASTM A295

Available in multiple versions


Price: $4.37 - $51.71
Product Specifications
Shape Solid Sphere
Material Type Alloy Steel
Exterior Finish Mirror-Like
Grade 52100
System of Measurement Inch
Specification Met ASTM A295
Material Composition Solid
Sphericity 0.000024  inches
UNSPSC Code 30000000

The 52100 chromium steel sphere has a reflective finish, meets American Soc... Read full product description


Currently showing 1-17 of 17
Outside Diameter Number of Items Part Number Price Quantity
   
0.062 inches 100 B000FN0O8K
In Stock (58)
$9.87
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0.093 inches 100 B000FMYHTS
In Stock (10)
$9.97
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0.125 inches 100 B000FMYHUC
In Stock (4)
$6.28
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0.156 inches 100 B000FN0OC6
In Stock (8)
$7.65
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0.219 inches 100 B000FMUL7K
In Stock (7)
$6.33
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0.281 inches 100 B000FMULBQ
In Stock (5)
$10.35
Prime Eligible
0.312 inches 100 B000FN0OJO
In Stock (13)
$8.32
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0.344 inches 100 B000FPL6SK
In Stock (1)
$11.31
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0.375 inches 100 B000FN0OMG
In Stock (1)
$13.28
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0.438 inches 100 B000FMWFJM
In Stock (1)
$17.67
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0.5 inches 100 B000FMWFME
In Stock (3)
$21.04
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0.625 inches 100 B000FMWFO2
In Stock (8)
$32.07
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0.750 inches 100 B000FPMCYW
In Stock (2)
$51.71
Prime Eligible
1 inches 10 B000FMULLG
In Stock (9)
$13.76
Prime Eligible
1/4 inches 100 B000FMYHYS
In Stock (1)
$4.37
Prime Eligible
3/16 inches 100 B000FN0OE4
In Stock (15)
$6.39
Prime Eligible
3/4 inches 25 B000FN0OS0
In Stock (32)
$10.49
Prime Eligible
Currently showing 1-17 of 17
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Product Features

  • 52100 alloy steel provides high strength, high resistance to corrosion and wear, and good machinability
  • Meets ASTM A295 specifications
  • Meets grade 25 sphere tolerance
  • Reflective finish provides a bright, mirror-like appearance
  • Precision tolerance

Product Details

  • Shipping Information: View shipping rates and policies
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B00CNM6LA6
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (51 customer reviews)
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Product Description

The 52100 chromium steel sphere has a reflective finish, meets American Society for Testing and Materials International ASTM A295 specifications, meets grade 25 sphere tolerance standards, and has a precision tolerance. The 52100 alloy steel grade has a high carbon and chromium content for high strength, high resistance to corrosion and wear, and good machinability. This material can be heat treated for higher hardness. The reflective finish provides a bright, mirror-like appearance.

Steel is an iron alloy with carbon and other elements that modify the steel to achieve specific properties. In general, steels with higher carbon content have greater strength, hardness, and wear resistance, while those with lower carbon content have more formability, weldability, and toughness. Carbon steels, which include most AISI-SAE grades in the 1000 range, are classified by their level of carbon content as low (below 0.3%), medium (0.3% to 0.6%) and high (0.6% and above). Alloy steels, which include AISI-SAE grades in the 1300 and 4000 ranges and above, incorporate elements such as chromium, molybdenum, and nickel to modify properties like machinability and corrosion resistance. Tool steels, which include most grades with a letter and number grade designation, have high carbide content for wear resistance, high hardness, and the ability to hold a cutting edge. Some tool steels are designed to resist deformation when used in elevated temperatures.

Tensile strength, used to indicate a material’s overall strength, is the peak stress it can withstand before it breaks. Wear resistance indicates the ability to prevent surface damage caused by contact with other surfaces. Toughness describes the material's ability to absorb energy before breaking, while hardness (commonly measured as indentation hardness) describes its resistance to permanent surface deformation. Formability indicates how easily the material can be permanently shaped. Machinability describes how easily it can be cut, shaped, finished, or otherwise machined, while weldability characterizes the ability to be welded.


Customer Questions & Answers

Customer Reviews

4.6 out of 5 stars
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Most Helpful Customer Reviews

12 of 13 people found the following review helpful By C. Jones on March 9, 2010
Outside Diameter: 1Number of Items: 10 Verified Purchase
These steel grade balls were perfect, I used them as a core for para-cord key chains, and they work perfectly, have almost a mirror finish on them.
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9 of 9 people found the following review helpful By TheOnly on March 29, 2013
Outside Diameter: 0.375Number of Items: 100 Verified Purchase
It’s a chromium steel sphere what can I say they where spherical in shape didn’t end up with any cubes so I say a good product.
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14 of 17 people found the following review helpful By J.L. Pettimore IV on January 27, 2012
Outside Diameter: 1Number of Items: 10 Verified Purchase
I bought the 10 pack of 1" ball bearings for monkey fist cores. The ball bearings themselves were as described and at a great price with free shipping. However, the packaging left a lot to be desired (thin plastic bag in a padded paper envelope). The padded envelope arrived with a few holes in it and the plastic bag was broken open. Miraculously I received all 10 ball bearings so all is well, just wanted to comment on the concept of putting a pound of ball bearings in a padded paper envelope for shipping.
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4 of 4 people found the following review helpful By M. Wolf VINE VOICE on November 6, 2011
Outside Diameter: 1Number of Items: 10 Verified Purchase
I bought these for a board game that my husband makes. this is what is called the murder ball). Typically we have used a glass shooter marble for this however I was looking for something different.

The balls are smooth and have a nice heavy weight to them. They are about the same size as a standard shooter marble. For what I needed excellent value.

In reading the reviews it seems like these can solve many a problem when applied to the right application.
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2 of 2 people found the following review helpful By Amazon Customer on January 8, 2013
Outside Diameter: 1Number of Items: 10 Verified Purchase
I bought these for the core on some monkey fists. They are good and heavy, without being too big. I would recommend them to anyone looking for monkey fist cores.
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1 of 1 people found the following review helpful By guy r on April 12, 2012
Outside Diameter: 3/4Number of Items: 25 Verified Purchase
these are pretty cool, i got them for a "roller coaster" i am going to make with my 3 year old son, so my technical expectations are pretty relaxed. they're round, ferrous, and shiny... perfect!!
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1 of 1 people found the following review helpful By Mark S. Bridge Vmd on December 11, 2012
Outside Diameter: 1Number of Items: 10 Verified Purchase
Hey, what's not to like. I've been playing around with boating knots and wanted to tie some monkey paws. These work fine. WooHoo!
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By J. Davis on January 25, 2013
Outside Diameter: 1/4Number of Items: 100 Verified Purchase
Bought a few packs of these in different sizes for various bicycle-related bearing use (rebuilding wheel hubs, headsets, bottom brackets etc).

Grade 25 are very high quality, the same as other very high-end "bicycle-specific" bearings that cost much more for a smaller quantity.

All of the sizes that I bought came in packs of 100 and each of them have the Lot Number listed on the package label (along with the size), which is nice in case you need to combine bearings for your use from more than one pack. As I understand it, you shouldn't mix bearings from different lot numbers since their tolerances may be slightly different.
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