| Established in
1952 |
 |
Page: 2200 |
Bearing Steel for Steel Balls
C/S - Chrome Steel, 52100, Chrome
Alloy Tool Steel
All of the above are common ways of describing the most widely
used material for the manufacturer of precision steel balls. It is a
through hardening, fine grain, Martensitic steel. Because of its
high hardness and fine grain structure, this material can be
finished to an extremely fine quality. Check out our available stock in our shopping cart.
HARDNESS
Using our standard heat treating
procedure, this material will harden to a minimum of 60 on the
Rockwell "C" scale (60 HRC). The hardness may be measured between
parallel ground flats. If the reading is taken on a spherical
surface, it is corrected for the curve. The Rc scale uses 150
Kilogram Load ( approximately 330 lb. ) applied to a conical
diamond brale indenter.
DENSITY
The density of this material, chrome steel, is .283 pounds per cubic
inch.
MAGNETIC
This material is strongly attracted by a
magnetic field.
MACHINABILITY
In the hardened condition, this
material can be ground, honed, and lapped using conventional
abrasives. It can be shaped and drilled using electrical
discharge machining or ultrasonic cavitation. In the annealed
condition, this material can be machined using normal techniques.
WELDABILITY
Because this material has 1% carbon, it does not weld well. It
can be resistance welded with difficulty. It can be soft soldered
with a high tin solder using an acid flux. It can be silver
soldered or brazed; but the heat will cause distortion of the
ball and a loss of hardness. For light load applications, the
ball can be attached with an adhesive such as epoxy. When
adhesive bounding is used, an area on the ball should be roughed
up by etching or abrasive blasting. The area should be thoroughly
cleaned.
Chrome steel balls will rust if they are in contact with water. Consider using stainless steel balls or brass balls in a wet environment.
| Chrome Steel
Chemical Analysis |
| Carbon |
0.95 - 1.10% |
| Manganese |
0.2 - 0.45% |
| Silicon |
0.25 - 0.35% |
| Phosphorus |
0.025% Max. |
| Sulfur |
0.025% Max. |
| Chromium |
1.30 - 1.60% |
| Ferrite |
Balance |
Chrome Steel Ball Crush Strength Data
*Calculated on .283 pounds per cubic inch density.
| Size -
Inches |
Balls
per pound |
Weight
per ball |
Crush
strength in pounds |
Size -
Inches |
| 1/32 |
221138. |
--- |
--- |
1/32 |
| 1/16 |
27642.3 |
--- |
270 |
1/16 |
| 3/32 |
8190.32 |
--- |
610 |
3/32 |
| 1/8 |
3455.29 |
.131 gr. |
1100 |
1/8 |
| 5/32 |
1769.11 |
.256 gr. |
1710 |
5/32 |
| 3/16 |
1023.79 |
.443 gr. |
2470 |
3/16 |
| 7/32 |
644.719 |
.703 gr. |
3360 |
7/32 |
| 1/4 |
431.911 |
1.050 gr. |
4400 |
1/4 |
| 9/32 |
303.345 |
1.495 |
5560 |
9/32 |
| 5/16 |
221.138 |
2.051.gr. |
6870 |
5/16 |
| 11/32 |
166.144 |
2.730 gr. |
8300 |
11/32 |
| 3/8 |
127.973 |
3.544 gr. |
9900 |
3/8 |
| 13/32 |
100.654 |
4.506 gr. |
11600 |
13/32 |
| 7/16 |
80.5899 |
5.628 gr. |
13400 |
7/16 |
| 15/32 |
65.5225 |
6.923 gr. |
15400 |
15/32 |
| 1/2 |
53.9889 |
8.402 gr. |
17600 |
1/2 |
| 17/32 |
45.05 |
10.077 gr. |
18000 |
17/32 |
| 9/16 |
37.9181 |
11.96 gr. |
20200 |
9/16 |
| 19/32 |
32.26 |
14.069 gr. |
22500 |
19/32 |
| 5/8 |
27.6423 |
16.41 gr |
25000 |
5/8 |
| 21/32 |
23.86 |
19.996 gr. |
27560 |
21/32 |
| 11/16 |
20.7681 |
21.841 gr. |
30200 |
11/16 |
| 23/32 |
18.18 |
24.957 gr. |
33000 |
23/32 |
| 3/4 |
15.9967 |
1.00 oz. |
36000 |
3/4 |
| 25/32 |
14.15 |
1.13 oz. |
39000 |
25/32 |
| 13/16 |
12.5818 |
1.26 oz. |
42200 |
13/16 |
| 27/32 |
11.24 |
1.42 oz. |
45500 |
27/32 |
| 7/8 |
10.0737 |
1.58 oz. |
49000 |
7/8 |
| 29/32 |
9.06 |
1.76 oz. |
52500 |
29/32 |
| 15/16 |
8.19032 |
1.95 oz. |
56200 |
15/16 |
| 31/32 |
7.42 |
2.16 oz. |
60000 |
31/32 |
| 1 |
6.74861 |
2.36 oz. |
64000 |
1 |
| 1-1/16 |
5.63 |
2.84 oz. |
72200 |
1-1/16 |
| 1-1/8 |
4.73977 |
3.375 |
81000 |
1-1/8 |
| 1-3/16 |
4.03 |
3.970 oz. |
90200 |
1-3/16 |
| 1-1/4 |
3.45529 |
4.631 oz. |
100000 |
1-1/4 |
| 1-5/16 |
2.99 |
5.360 oz. |
104700 |
1-5/16 |
| 1-3/8 |
2.59601 |
6.163 oz. |
108900 |
1-3/8 |
| 1-7/16 |
2.27 |
7.043 oz. |
115700 |
1-7/16 |
| 1-1/2 |
1.99959 |
8.002 oz. |
122400 |
1-1/2 |
| 1-5/8 |
1.57273 |
10.173 oz. |
--- |
1-5/8 |
| 1-3/4 |
1.25921 |
12.706 oz. |
--- |
1-3/4 |
| 1-7/8 |
1.02379 |
15.628 oz. |
--- |
1-7/8 |
| 2 |
.843577 |
1.00 lb. &
2.967 oz. |
--- |
2 |
| 2-1/8 |
.703296 |
1.00 lb. &
6.750 |
--- |
2-1/8 |
| 2-1/4 |
.592471 |
1.00 lb.
&11.006 oz |
--- |
2-1/4 |
| 2-3/8 |
.503760 |
1.00 lb. &
15.761 oz. |
--- |
2-3/8 |
| 2-1/2 |
.431911 |
2.00 lbs.
& 5.045 oz. |
--- |
2-1/2 |
| 2-5/8 |
.373101 |
2.00
lbs.&10.884 oz. |
-- |
2-5/8 |
| 2-3/4 |
.324501 |
3.00 lbs. &
1.306 oz. |
-- |
2-3/4 |
| 2-7/8 |
.283988 |
3.00 lbs. &
8.340 oz. |
-- |
2-7/8 |
| 3 |
.249948 |
4.00 lbs &
0.013 oz. |
-- |
3 |
| 3-1/8 |
.221138 |
4.00 lbs &
8.353 oz. |
-- |
3-1/8 |
| 3-1/4 |
.196591 |
4.00 lbs &
1.387 oz. |
-- |
3-1/4 |
| 3-3/8 |
.175547 |
5.00 lbs &
11.144 oz |
-- |
3-3/8 |
| 3-1/2 |
.157402 |
6.00 lbs. &
5.650 oz. |
-- |
3-1/2 |
| 3-5/8 |
.141674 |
7.00 lbs. &
0.935 oz. |
-- |
3-5/8 |
| 3-3/4 |
.127973 |
7.00 lbs. &
13.026 oz. |
-- |
3-5/8 |
| 3-7/8 |
.115984 |
8.00 lbs. &
9.950 oz. |
-- |
3-7/8 |
| 4 |
.105447 |
9.00 lbs. &
7.735 oz. |
-- |
4 |
| 4-1/8 |
.096148 |
10.00 lbs. &
6.409 oz. |
-- |
4-1/8 |
| 4-1/4 |
.087911 |
11.00 lbs &
6.000 oz. |
-- |
4-1/4 |
| 4-3/8 |
.080589 |
12.00 lbs &
6.536 oz. |
-- |
4-3/8 |
| 4-1/2 |
.074058 |
13.00 lbs. &
8.044 oz. |
-- |
4-1/2 |
|