Quality Products and Service since 1947
| …Roll easy with Frantz® |
Hardened Carbon Steel Balls
Frantz® Sterling® Steel Ball has been
manufacturing carbon steel balls in Sterling IL since 1947. Sterling Steel
Ball products earned a national reputation for quality, precision, and
performance. In addition to our manufactured balls, Sterling Steel Ball
globally sources steel balls for customers desiring hardened carbon steel balls
This is our Hardened Carbon Steel Ball value to you:
· Quality Manufacturing and Sourcing. Hardened carbon steel ball products can be manufactured or globally sourced providing product that meets Sterling Steel Ball standards. In other words, we stand behind what we sell and provide our customers with peace of mind.
·
Inspection Services.
Customers requiring closer tolerances or additional
quality assurance in an economy grade product may choose
to employ Sterling® Steel Ball inspection services. Sterling Steel Ball
operates a state of the art test lab to measure our products against ABMA
standards including roundness, surface roughness, case depth, and hardness.
This service assures an additional level of quality beyond that available from
traditional distributors and provides value from a supplier whose reputation has
been built over decades manufacturing steel balls.
· Drilling Capabilities. Sterling® Steel Ball utilizes high speed technology to drill holes of various diameters and depths into spheres of various sizes and materials. In addition to drilling our precision manufactured balls, we can drill hardened carbon steel balls of various materials to your specification. Click here for more details about our ball drilling capabilities.
· Finishing Options. Sterling® Steel Ball utilizes heat treating technology to harden steel balls to your desired specification. In addition to hardening manufactured balls, choose from plain, polished or various plated finishing options.
·
Sterling Armor®.
For applications where corrosion is an issue, Frantz® offers Sterling Armor;
a patented heat treating process that changes the
physical microstructure within the steel surface of the ball to provide
corrosion protection superior or equivalent to stainless steel in most
environments. Finishes include gloss black or dull patina. Sterling Armor® is a cost effective solution to
your hardened carbon steel ball corrosion challenges.
When you're
looking for a cost efficient ball selection look to our hardened
carbon steel balls. Many sizes available for immediate
shipment, or have our engineering service develop the precision ball
to fit your exact specifications.
Manufacturing, sourcing, and quality are handled at our plant in Sterling, IL, USA. Balls are carburized and hardened, with a highly polished surface finish. They feature a minimum hardness of 60 Rc with ball sphericity to .0001" and will fit a wide range of applications.
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FEATURES |
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Manufactured to stringent ABMA Spec. 10 standards
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Full range of ball sizes (1/8" to 1")
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High quality carbon steel material
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Available grades (100, 200, 500, 1000, 2000)
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Full traceability of material
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Case hardened carbon steel
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CHEMICAL ANALYSIS (Raw Material) |
|
| Carbon (core) | 0.10 to 0.20% |
| Manganese | 0.60 to 0.90% |
| Silicon | 0.10 to 0.20 |
| Sulphur | 0.50% maximum |
| Phosphorus |
0.040% maximum |
Case Depth Requirements
| Ball Diameter | Minimum Case Depth | Ball Diameter | Minimum Case Depth | ||
| at least | but not | at least | but not | ||
| 1/8" | 3/16" | .025" | 3/8" | 7/16" | .055" |
| 3/16" | 7/32" | .030" | 7/16" | 1/2" | .065" |
| 7/32" | 1/4" | .035" | 1/2" | 9/16" | .070" |
| 1/4" | 3/8" | .045" | 9/16" | 3/4" | .075" |
| 3/4" | 1˝" | .080" | |||
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TYPICAL USES |
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HARDNESS PROPERTIES |
| Hardness
for carbon steel balls, as measured on the ball's surface is
Rockwell "C" 60 (minimum) or specified by customers.
See chart for minimum case depth. |
| Ball Weight table |
| Ball Diameter | No. of Balls per lb. | No. of Balls per kg. | |
| Decimal | Fraction | ||
| .1250 | 1/8" | 3440 | 7584 |
| .1875 | 3/16" | 1020 | 2249 |
| .2500 | 1/4" | 430 | 948 |
| .3125 | 5/16" | 220 | 485 |
| .3750 | 3/8" | 128 | 282 |
| .4375 | 7/16" | 80.3 | 177 |
| .5000 | 1/2" | 53.8 | 119 |
| .5625 | 9/16" | 37.8 | 83 |
| .6250 | 5/8" | 27.5 | 61 |
| .6875 | 11/16" | 20.7 | 46 |
| .7500 | 3/4" | 15.9 | 35 |
| .8125 | 13/16" | 12.5 | 28 |
| .8750 | 7/8" | 10.0 | 22 |
| .9375 | 15/16" | 8.16 | 18 |
| 1.0000 | 1" | 6.72 | 14 |
|
Tolerances by Grade for Lots of Balls and Individual Balls |
| Ball Grade | Allowable
Lot Diameter Variation |
Allowable Ball Diameter Variation | Allowable
Deviation from Spherical Form |
Maximum
Surface Roughness Arithmetic Avg. |
| 100 | .0002" | .0001" | .0001" | 5 |
| 200 | .0004" | .0002" | .0002" | 8 |
| 500 | .001" | .0005" | .0005" | N/A |
| 1000 | .002" | .001" | .001" | N/A |
| 2000 | .004" | .002" | .002" | N/A |
| Hardened Carbon Steel Balls |