Different Types of Steel Balls That Meet Your Needs

Steel Balls
Bearing Balls
Steel Balls

Carbon Steel Ball

Material Available

  • Low Carbon: AISI 1008~ AISI 1018
  • Medium Carbon: AISI 1045
  • High Carbon: AISI 1065~ AISI 1085
AISI NumberC %Si %Mn %Mo %P %S %Hardness
AISI 10080.10 Max0.30 Max0.50 Max0.0120.07 Max0.06 MaxCase Hardened HRC 55Min
AISI 10150.13~0.180.10~0.300.30~0.600.020.04maxCase Hardened HRC 55~61
AISI 10450.43~0.500.10~0.300.60~0.900.0250.04 Max0.05 MaxThrough Hardened HRC 60 Min
AISI 10860.83~0.880.10~0.300.30~0.700.040.04 Max0.04 MaxThrough Hardened HRC 60 Min

Chemical Composition

Grade

3 ~ 1000

Size

1.0mm~ 2"

Application

Casters, bicycle parts, light-duty bearing, hardware, toy and etc.

Chrome Steel Ball

C %Si %Mn %Cr %Cu %S %P %
0.90~1.050.15~0.350.25~0.451.35~1.650.3 Max0.03 Max0.03 Max

Chemical Composition

Density

7.84 g/cm3

Hardness

Through hardened, HRC 60 Min. Grade
5~ 1000 grade

Size

0.5mm~5"

Application

Bearing, Ball Screw, Linear motion guide, Automotive parts, Chemical, food processing.

Stainless Steel Ball

Material Available

  • AISI 302~AISI 316
  • AISI 420~AISI 440C
AISI NumberC %Si %Mn %Cr %Ni %Mo %P %S %Character
AISI 3020.15 Max1.00 Max2.00 Max17.0~ 19.08.0~ 10.50.045 Max0.03 MaxSlightly magnetic Austenitic
AISI 3040.07 Max1.00 Max2.00 Max17.0~ 19.08.50~ 10.50.045 Max0.03 MaxSlightly magnetic Austenitic
AISI 3160.07 Max1.00 Max2.00 Max16.5~ 18.510.5~ 13.52000~ 2.500.045 Max0.03 MaxNonmagnetic Austenitic Excellent corrosion resistance
AISI 420J0.17~ 0.251.00 Max1.00 Max12.0~ 14.00.045 Max0.03 Maxmagnetic Hardenable HRC 48 Min fair corrosion resistance
AISI 4300.08 max1.00 Max1.00 Max15.5~ 17.50.045 Max0.03 Maxfair- good corrosion resistance
AISI 440C0.95~ 1.201.00 Max1.00 Max16.0~ 18.00.40~ 0.800.04 Max0.02 Maxfair corrosion resistance Hardenable HRC 58 Min

Chemical Composition

Grade

10~1000

Size

0.5mm~2"

Application

Dispenser valve ball, stainless steel bearing, chemical related application

Bearing Balls

STR Industries manufactures millions of bearing balls. The balls come in many different grades, as defined by the American Bearing Manufacturers Association (ABMA), which defines the precision of balls. Predictable uniformity, or repeatability, in the manufacturing process is crucial to ensuring consistent performance of STR's bearing balls.

Bearing balls are a type of rolling-element bearing that uses balls to maintain the separation between moving parts. Bearing balls are at the heart of almost every product with a rotating shaft. They are used in bicycles, blenders, washing machines, fans, and many other products.

Available Grades and Sizes:

GradeSize Range (inches)
3025" - 3/16"
5.025" - 1 1/2"
101/32" - 2 1/2"
161/32" - 2 1/2"
241/32" - 2 1/2"
GradeSize Range (inches)
481/32" - 2 1/2"
1001/32" - 4 1/2"
2001/32" - 4 1/2"
10001/32" - 4 1/2"

We can offer balls for any unique applications, such as:

  • Games (pinball machines)
  • Toys
  • Weights
  • Medicine Balls
  • Dent Removal