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| Material Analysis |
18-8 AISI |
316 AISI |
Carpenter 20Cb-3 |
440C AISI |
| Carbon |
0.08% |
0.08% |
0.06% |
0.95/1.20% |
| Manganese |
-- |
2.00% max. |
2.00% max. |
1.00% max. |
| Phosphorus |
-- |
0.045% max. |
0.035% max. |
0.04% max. |
| Sulfur |
-- |
0.030% max. |
0.035% max. |
0.03% max. |
| Silicon |
-- |
1.00% max. |
1.00% max. |
1.00% max. |
| Nickel |
8.00/10.00% |
10.00/14.00% |
32.50/35.00% |
-- |
| Chromium |
17.00/19.00% |
16.00/18.00% |
19.00/21.00% |
16.00/18.00% |
| Molybdenum |
-- |
2.00/3.00% |
2.00/3.00% |
0.75% max. |
| Copper |
-- |
-- |
3.00/4.00% |
-- |
| Columbium + Tantalum |
-- |
-- |
8xC min./1.00 max. |
0.75% max. |
| |
| Physical Properties |
| Specific Gravity |
8.03 |
7.95 |
8.08 |
7.75 |
| Density |
0.286 lbs/in.3 |
0.287 lbs/in.3 |
0.292 lbs/in.3 |
0.28 lbs/in.3 |
| |
| Mechanical Properties |
| Tensile Strength |
85 Kpsi |
82 Kpsi |
90 Kpsi |
285 Kpsi |
| Yield Strength |
35 Kpsi |
36 Kpsi |
46 Kpsi |
275 Kpsi |
| Elongation (3") |
60% |
69% |
45% (2inches) |
2% |
| Reduction of Area |
70% |
76% |
65% |
10% |
| Impact (17.0") |
110ft/lbs |
240ft/lbs |
-- |
-- |
| Hardness |
87R |
80R |
86R |
58R min. |
Stainless Steel Balls Information Page |
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Stock Availability
| |
|
Available
Stock Sizes |
Roundness
Dia. Tol/Ball |
Basic Dia.
Tolerance |
Surface
Finish |
| Material |
Ball Grade |
Inches |
Inches |
Inches |
Micro Inch |
| 316 |
50V |
1/8 - 3/4" |
.000050 |
±.001 |
5 |
| 316 |
100V |
7/8 - 1 7/8" |
.0001 |
±.002 |
8 |
| S.S. 440C |
25 |
1/8 - 1.0" |
.000025 |
±.001 |
1.5 |
| Carp 20C |
50V |
1/8 - 5/8" |
.000050 |
±.001 |
5 |
| Carp 20C |
100V |
3/4 - 1 7/8" |
.0001 |
±.002 |
8 |
Stainless Steel Balls Information Page |
|
Precision Balls Directory - for a complete precision balls guide - click here
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