Chrome 52100 CR100
Balls
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Chrome
steel balls are widely used in precision ball bearings, as well
as, in a number of other industrial applications. Chrome steel
balls have excellent surface quality, high hardness and high
load bearing capacity, as a result of through hardening.
Only
the finest quality chrome steel, produced in accordance with
ASTM specification A-295, is used. Small size balls are
made from wire stock while larger size balls are hot forged from
bar stock. Modern furnaces with precisely controlled atmospheres
and temperatures are used for heat treating to assure uniform
hardness and proper microstructure for each chrome steel ball.
Throughout the manufacturing process, statistical process
control assures tolerance accuracy, fine surface finish and
consistent high quality.
Consumable
electrode vacuum melted (CEVM) available upon request.
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Click
here for sizes and pricing |
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Chrome
Balls: Available Grades and Sizes
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Miniature
Precision Chrome Balls
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Grade
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Size
Range in Inches and Millimeters
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3
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0.025
- 3/16
0.025 - 4.762
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5
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0.025
- 11/64
0.025 - 4.365
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10
- 24 - 48 - 100
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1/32
- 11/64
0.793 - 4.365
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200
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1/32
- 7/64
0.793 - 2.778
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Chrome
Balls: Available Grades and Sizes
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Precision
Chrome Balls
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Grade
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Size
Range in Inches and Millimeters
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5
- 10 - 16 - 24 - 48
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3/16
- 7/8
4.762 - 22.225
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100
- 200 - 500 - 1000
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1/8
- 4 1/2
3.175 - 114.300
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Balls
per Pound
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Size
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Balls
per Pound
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Inches
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Millimeters
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1/32
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0.793
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221,000
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3/64
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1.190
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66,900
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1/16
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1.587
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27,600
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3/32
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2.381
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8,190
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1/8
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3.175
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3,460
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5/32
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3.968
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1,770
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3/16
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4.762
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1,020
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7/32
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5.556
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645
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1/4
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6.350
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432
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9/32
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7.143
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303
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5/16
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7.937
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221
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11/32
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8.731
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166
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3/8
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9.525
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128
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7/16
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11.112
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80.6
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1/2
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12.700
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54.0
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9/16
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14.287
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37.9
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5/8
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15.875
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27.6
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11/16
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17.462
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20.8
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3/4
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19.050
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16.0
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13/16
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20.637
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12.6
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7/8
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22.225
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10.1
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15/16
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23.812
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8.19
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1
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25.400
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6.75
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1
1/16
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26.987
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5.75
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1
1/8
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28.575
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4.74
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1
3/16
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30.162
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4.12
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Balls
per Pound
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Size
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Balls
per Pound
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Inches
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Millimeters
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1
1/4
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31.750
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3.46
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1
5/16
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33.337
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3.05
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1
3/8
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34.925
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2.60
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1
7/16
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36.512
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2.32
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1
1/2
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38.100
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2.00
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1
9/16
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39.687
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1.81
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1
5/8
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41.275
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1.57
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1
11/16
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42.862
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1.43
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1
3/4
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44.450
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1.26
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1
13/16
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46.037
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1.16
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1
7/8
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47.625
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1.02
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1
15/16
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49.212
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.948
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2
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50.80
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.844
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2
1/8
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53.975
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.703
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2
1/4
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57.151
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.594
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2
3/8
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60.325
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.504
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2
1/2
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63.500
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.432
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2
5/8
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66.675
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.373
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2
3/4
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69.850
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.325
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2
7/8
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73.025
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.284
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3
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76.200
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.250
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3
1/4
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82.550
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.197
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3
1/2
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88.900
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.157
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3
3/4
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95.250
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.128
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4
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101.600
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.105
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4/1/2
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114.300
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.074
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Material
Analysis:
Chrome
balls are made from the following special chemical analysis.
All sizes and grades are manufactured from AISI Type 52100
steel.
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Material
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CDA
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Federal
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Military
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ASTM
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UNS
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AMS
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Chrome
Steel
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52100
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QQ-S-624b
FED STD66b
E 52100
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MIL-S
980A(-1)
MIL-B 1083C
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A295-46T
TYPE A
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6440E
G-52986
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-MS
19059
7440(52100)
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Chemical
Analysis
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Carbon................................................................
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0.98%
to 1.05%
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Chromium...........................................................
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1.30%
to 1.60%
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Manganese.........................................................
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0.25%
to 0.45%
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Silicon..................................................................
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0.15%
to 0.35%
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Sulphur................................................................
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0.008%
maximum
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Phosphorus.........................................................
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0.020%
maximum
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Mechanical
Properties
Chrome
steel balls are uniformly hardened and tempered
throughout their entire diameter to achieve maximum
strength and quality. Ball hardness is controlled within
the 60-67 HRC range as measured on parallel flat
surfaces. Custom heat treating is available for special
hardness and dimensional stability requirements.
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Tensile
Strength..................................................
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325,000
psi
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Yield
Strength......................................................
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295,000
psi
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Elongation
in two inches....................................
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5%
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Reduction
in area................................................
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8%
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Modulus
of elasticity...........................................
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29,500,000
psi
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Density.................................................................
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0.283
lbs./cu. in.
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©
copyright 2005 Hoover Precision Products, Inc., All Rights Reserved |
