Ferrous Metal Steel Balls

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Dimensional Conversion Chart

Inch
Fractions
Inch
Decimals
Metric
mm
Weight per 1000 balls kg Inch
Fractions
Inch
Decimals
Metric
mm
Weight per 1000 balls kg
1/64 .0156 0.397 .00026 .7480 19.000 27.98
.0197 0.500 .00051 3/4 .7500 19.050 28.20
1/32 .0312 0.794 .00210 25/32 .7812 19.844 31.87
.0394 1.000 .00407 .7874 20.000 32.63
3/64 .0469 1.190 .00688 13/16 .8125 20.637 35.85
.0472 1.200 .00704 .8268 21.000 37.77
.0590 1.500 .01377 27/32 .8437 21.431 40.15
1/16 .0625 1.588 .01632 .8661 22.000 43.43
5/64 .0781 1.984 .03187 7/8 .8750 22.225 44.78
.0787 2.000 .0326 .9055 23.000 49.63
3/32 .0937 2.381 .0550 29/32 .9062 23.019 49.75
.0984 2.500 .0638 15/16 .9375 23.812 55.07
7/64 .1094 2.778 .0875 .9449 24.000 56.39
.1181 3.000 .1101 31/32 .9687 24.606 60.77
1/8 .1250 3.175 .1305 .9842 25.000 63.73
.1378 3.500 .1749 1 1.0000 25.400 66.84
9/64 .1406 3.572 .1859 1.0236 26.000 71.69
5/32 .1562 3.969 .2550 1 1/16 1.0625 26.987 80.17
.1575 4.000 .2610 1.1024 28.000 89.54
11/64 .1719 4.366 .3394 1 1/8 1.1250 28.575 95.17
.1772 4.500 .3716 1.1811 30.000 110.10
3/16 .1875 4.762 .4406 1 3/16 1.1875 30.162 111.90
.1968 5.000 .5099 1 1/4 1.2500 31.750 130.50
.2165 5.500 .6786 1.2598 32.000 133.70
7/32 .2187 5.556 .6996 1 5/16 1.3125 33.337 151.10
15/64 .2344 5.953 .8605 1.3386 34.000 160.30
.2362 6.000 .8810 1 3/8 1.3750 34.925 173.80
1/4 .2500 6.350 1.044 1.3780 35.000 174.90
.2559 6.500 1.120 1.4173 36.000 190.30
17/64 .2656 6.747 1.253 17/16 1.4375 36.512 198.50
.2756 7.000 1.399 1.4960 38.000 223.80
9/32 .2812 7.144 1.487 1 1/2 1.5000 38.100 225.60
.2953 7.500 1.721 1 9/16 1.5625 39.687 255.00
19/64 .2969 7.541 1.749 1.5748 40.000 261.00
5/16 .3125 7.938 2.040 1 5/8 1.6250 41.275 286.00
.3150 8.000 2.088 1 11/16 1.6875 42.862 321.20
.3346 8.500 2.505 1 3/4 1.7500 44.450 358.20
11/32 .3437 8.731 2.715 1.7716 45.000 371.70
.3543 9.000 2.973 1 13/16 1.8125 46.037 398,00
23/64 .3594 9.128 3.102 1 7/8 1.8750 47.625 440.60
.3740 9.500 3.497 1 15/16 1.9375 49.212 486.10
3/8 .3750 9.525 3.525 1.9685 50.000 509.90
25/64 .3906 9.922 3.983 2 2.0000 50.800 534.70
.3937 10.000 4.079 21/8 2.1250 53.975 641.40
13/32 .4062 10.319 4.481 2.1653 55.000 678.60
.4331 11.000 5.429 21/4 2.2500 57.150 761.30
7/16 .4375 11.112 5.597 2.3622 60.000 881.00
.4528 11.500 6.203 23/8 2.3750 60.325 895.40
29/64 .4531 11.509 6.219 2y2 2.5000 63.500 1044.40
15/32 .4687 11.906 6.884 2.5590 65.000 1120.10
.4724 12.000 7.048 25/8 2.6250 66.675 1209.00
31/64 .4844 12.303 7.596 23/4 2.7500 69.850 1390.10
y2 .5000 12.700 8.355 2.7559 70.000 1484.70
.5118 13.000 8.961 27/8 2.8750 73.025 1588.40
17/32 .5312 13.494 10.02 2.9528 75.000 1720.70
.5512 14.000 11.19 3 3.0000 76.200 1804.70
9/16 .5625 14.288 11.90 31/8 3.1250 79.375 2039.80
.5905 15.000 13.77 3.1500 80.000 2088.30
19/32 .5937 15.081 13.99 3 ¥a 3.2500 82.550 2294.40
5/8 .6250 15.875 16.32 3.3464 85.000 2530.90
.6299 16.000 16.70 3y2 3.5000 88.900 2865.70
21/32 .6562 16.669 18.89 3.5433 90.000 2993.40
.6693 17.000 20.04 3.7401 95.000 3521.10
11/16 .6875 17.462 21.72 33/4 3.7500 95.250 3524.70
.7087 18.000 23.79 3.9370 100.000 4078.80
23/32 .7187 18.256 24.82 4 4.0000 101.600 4277.70

Precision Ball: Ferrous Metals

Low Carbon Steel (Case Hardened)

General Information:

Balls of this type are generally used in applications where there are only moderate loads and slow rotating parts. For Example: Castors, Conveyors and Non-precision Bearings.
The main feature of this type of ball is the carburized case with a soft core giving resistance to surface wear.

International Equivalents:

AISI 1010, JIS SWRM12, EN32, ASTMA/29, Wks 1.0010

Composition:
C 0.10-0.15%
Mn 0.30-0.60%
P 0.045% Max.
S 0.045% Max.
Si 0.1-0.4% Max.
Hardness
HRc

60 Min.

Mechanical
Properties
Tensile Strength 53.000psi
Yield Strength 44.000psi
Density 0.284lbs/cu.in
Size Range: 1.588mm(1/16″)to
12.700mm(1/2″)
Standard Grades
Available
100,200,500,1000

Minimum Case Depth:

Ball Dia. Case Depth Ball Dia. Case Depth
1.5mm-2mm 0.4mm 9.5mm-11mm 1.4mm
2.1mm-3mm 0.5mm 11.1mm-12.5mm 1.7mm
3.1mm-4.5mm 0.6mm 12.6mm-14mm 1.8mm
4.6mm-5.5mm 0.8mm 14.1mm-19mm 1.9mm
5.6mm-6.5mm 0.9mm 19.1mm-38mm 2.0mm
6.6mm-9.5mm 1.1mm

High Carbon Steel (Through Hardened)

General Information

Balls of this material have the advantages of being through hardened to HRc 60 min and will take higher loads and provide longer life than case hardened carbon balls for such applications as the Cycle Industry.

International Equivalents:

AISI 1065-86, EN8-9 C85, Wks 1.1269

Composition:(AISI1085)
C 0.85%
Si 0.35%
Mn 0.60%.
P 0.22%.
S 0.022%.
Hardness
HRc

60 Min.

Mechanical
Properties
Tensile Strength 106.400psi
Density 0.284lbs/cu.in
Size Range: 3.175mm(1/8″) to
38.1mm(1.1/2??)
Standard Grades
Available
100, 500,1000

Crushing Loads

Ball Dia. Load Ball Dia. Load
1/8″ 375kgs 9/32″ 2200kgs
5/32″ 800kgs 5/16″ 2700kgs
3/16″ 1100kgs 11/32″ 3200kgs
1/4″ 1800kgs 3/8″ 3900kgs

High Carbon Chrome Alloy

General Information

This is an oil hardened steel which is universally used by the ball and roller bearing industry. The steel has high hardness and good resistance to deformation and excellent wear , resistance. Usually vacuum degassed and uniformly through hardened in atmospherically controlled electric furnaces.

International Equivalents:

AISI 52100, SUJ2ASTM 100CR6 , W 1.3505

Composition:
C 0.95-1.1%
Cr 1.30-1.60%
Mn 0.25-0.45%.
Si 0.15-0.30%.
P 0.025% Max.
S 0.025% Max
Hardness
HRc

60-67

Mechanical Properties
Tensile Strength 325.000psi
Yield Strength 295.000psi
Density 0.283lbs/cu.in
Size Range: 0.635mm(0.025″) to 101.60mm(4??)
Standard Grades Available 51025100500

Crushing Loads for Chrome Steel

Diameter Minimum Crushing Load Diameter Minimum Crushing Load Diameter Minimum Crushing Load
Inch mm kg Inch mm kg Inch mm kg
1/8 3.175 666 31/64 12.303 7350 1 25.400 26600
3.500 792 1/2 12.700 7780 11/6 26.987 29600
5/32 3.968 990 17/32 13.494 8660 11/8 28.575 32800
4.000 1000 9/16 14.288 9590 1 3/16 30.162 36100
4.500 1240 15.000 10500 1 1/4 31.750 39500
3/16 4.762 1370 19/32 15.081 10600 1 5/16 33.337 43100
5.000 1490 5/8 15.875 11600 1 3/8 34.925 46800
7/32 5.556 1800 21/32 16.668 12600 1 7/16 36.512 50600
15/64 5.593 2020 11/16 17.462 13700 1 1/2 38.100 54600
6.000 2060 23/32 18.256 14800 1 5/8 41.275 62900
1/4 6.350 2080 3/4 19.050 16000 1 3/4 44.450 71700
17/64 6.746 2535 25/32 19.843 17200 1 7/8 47.625 81100
9/32 7.144 2810 20.000 17400 2 50.800 90900
5/16 7.938 3380 13/16 20.637 18400 2 3/16 55.562 106500
11/32 8.731 4000 27/32 21.431 19700 2 1/4 57.150 112000
3/8 9.525 4670 7/8 22.225 21000 2 5/16 58.735 116500
10.000 5090 29/32 23.018 22300 2 1/2 63.500 135000
13/32 10.318 5380 15/16 23.812 23700 2 3/4 69.850 159800
7/16 11.112 6140 31/32 24.606 25100 3 76.200 186500
15/32 11.906 6940 25.000 25900 4 101.600 309500

Stainless Steel AISI 440C (Martensitic)

General Information

These balls give maximum hardness with good corrosion resistance to fresh water, steam, crude oil, gasoline, alcohol, food environment, blood and perspiration. In addition this material is ferro-magnetic and makes a fair permanent magnet. Balls are deep freeze stabilised after heat treatment.

International Equivalents

AISI 440C, DINX105 CR Mol7, SUS 440C, W 1.4125

Composition
C 0.95 – 1.20%
Cr 16 -18%
Si 1.00% Max
Mn 1.0% Max
P 0.040% Max
S 0.030% Max
Mo 0.40 – 0.80% Max
Hardness  
HRc 58 – 63
Mechanical
Properties
Tensile Strength 285,000 psi
Yield Strength 275,000 psi
Density 0.277 Ibs/cu.in
Size Range:  0.635mm (0.025″) to 101.60mm (4″)
Standard Grades
Available
10, 25, 50,1000

Stainless Steel AISI 302.304.304L (Austenitic)

General Information

AISI 302 and 304 balls are for applications where material toughness and resistance to corrosion are more important than hardness. They have good corrosion resistance to the food environment, oxidising solutions and most organic chemicals. Applications are Valves, Aerosol and Finger Pumps. Corrosion resistance is higher after annealing and passivation. Not resistant to sulphuric acids.

International Equivalents

DIN X5 CR Ni 18.09, JIS SUS 304, W 1.4301

Composition 302 304 304L
C 0.12% Max 0.08% Max 0.03% Max
Cr 17 -19% 18 – 20% 18 – 20%
Ni 8 -11% 8 -10.5% 8 -10.5%
Si 1.0% Max 1.0% Max 1.0% Max
Mo 1.0% Max
Mn 2.0% Max 2.0% Max 2.0% Max
P 0.045% Max 0.045% Max 0.045% Max
S 0.03% Max 0.03% Max 0.03% Max
Hardness  
HRc Soft (Annealed)
Mechanical
Properties
Tensile Strength 100,000 to 180,000 psi
Yield Strength 50,000 to 150,000 psi
Density  0.286 Ibs/cu.in
Size Range:  1.588mm (1/16″) to 76.2mm (3″)
Standard Grades
Available
24, 48,100, 200,1000

Stainless Steel AISI 420,420C (Martensitic)

General Information

Balls of this material have a lower chrome content than 440C, and are used in applications where the more rigid corrosion resistance requirements can be relaxed. They have fair resistance to fresh water, steam, oil, gasoline, blood, perspiration, alcohol and food environment. However will not pass 40 hours salt spray test.

International Equivalents

AISI 420, SUS 420, X47Crl3, EN56D, W 1.3541

Composition 420 420C
C 0.15% Min 0.40 – 0.50%
Cr 12 -14% 12.5 -14.5%
Si 1.0% Max 1.0% Max
Mn 1.0% Max 1.0% Max
P 0.04% Max 0.04% Max
S 0.03% Max 0.03% Max
Ni 1.0% Max
Hardness  
HRc 48-53    53-58
Mechanical
Properties
Tensile Strength 275,000 psi
Yield Strength 0.280 Ibs/cu.in
Size Range:  0.6mm (0.024″) to 76.2mm (3″)
Standard Grades
Available
10,16, 24, 48,100, 200

Stainless Steel AISI 316, 316L (Austenitic)

General Information

Similar to AISI 302/304 but, with the addition of molybdenum improves corrosion resistance particularly to sulphuric acid compounds. These balls are used extensively in applications where contact is made with inks, photographic chemicals, bleaches, dyes and nitric acids.

This is the only austenitic steel for ball manufacture and can be Magnetic and Non Magnetic.

International Equivalents

DIN X5 CR Nl M0 17122, W 1.4401, JIS SUS 316

Composition 316 316L
C 0.08% Max 0.08% Max
Cr 16 -18% 16 -18%
Ni 10 -14% 10 -14%
Si 1.0% Max 1.0% Max
Mo 2-3% 2-3%
Mn 2.0% Max 2.0% Max
P 0.045% Max 0.045% Max
S 0.03% Max 0.03% Max
Hardness  
HRc Soft (Annealed)
Mechanical
Properties
Tensile Strength 180,000 psi
Yield Strength 150,000 psi
Size Range:  1.588mm (1/16″) to 76.2mm (3″)
Density:  0.290 Ibs/cu.in
Standard Grades
Available
24, 48,100, 200,1000

Applications

  • Automotive
  • Power Generation
  • Petrochemicals
  • Fluid Power
  • Instrumentation
  • Chemicals & Fertilizer Plants
  • Electronics
  • Filtration
  • Pharmaceuticals
  • Hydraulic Fittings
  • Hydraulic Cylinders
  • Pneumatic Cylinders
  • Valves and Pumps
  • Plumbing Products
  • Dairy/Food Processing
  • Earthmoving & Construction Equipment

Seals

Assorted Boxes

Couplings & Elements

Belts & Pulleys

Bearings

Hose Clamp

Carbon Products

Gasket & Gasket Sheets

Molded And Extruded Rubber Products

PTFE Products

Bellows

Thermoplastics

Precision Balls

Anti Explosive Decompression

Mechanical Face Seals

Orings

Springs

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