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About Steel
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Compare over 50 grades of steel and cast iron to find the right material for you—all with material certificates for traceability.
Hard Wear-Resistant 52100 Alloy Steel Balls
- Yield Strength: 295,000 psi
- Hardness: Rockwell C60 (Very Hard)
- Fabrication: Cold Worked
- Specifications Met: See table
High carbon and chromium content makes this 52100 alloy steel extremely hard and resistant to wear. It’s also known as chrome steel. Often used as bearings, these balls are hardened for increased abrasion and impact resistance.
Balls that meet ASTM A295 are manufactured to these standards for quality and performance.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
| Dia. | Dia. Tolerance | Heat Treatment | Specifications Met | Pkg. Qty. | Pkg. | |
Mirror-Like | ||||||
|---|---|---|---|---|---|---|
| 0.026" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 500 | 00000000 | 000000 |
| 1/32" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 500 | 00000000 | 00000 |
| 0.043" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.045" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 3/64" | -0.0001" to 0.0001" | Hardened | __ | 100 | 00000000 | 00000 |
| 0.0512" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.0565" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.058" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.0614" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 1/16" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 0000 |
| 0.0639" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 0.0656" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.0667" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 0.072" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.0748" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 0.0761" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.0768" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 5/64" | -0.0001" to 0.0001" | Hardened | __ | 100 | 00000000 | 00000 |
| 0.0805" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 0.0833" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 0000000 | 0000 |
| 0.09" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.0928" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 3/32" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 0000 |
| 0.0945" | -0.0001" to 0.0001" | Hardened | __ | 500 | 00000000 | 00000 |
| 0.0953" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.0975" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.0981" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.0992" | -0.0001" to 0.0001" | Hardened | __ | 500 | 00000000 | 00000 |
| 0.101" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.1025" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 7/64" | -0.0001" to 0.0001" | Hardened | __ | 100 | 00000000 | 00000 |
| 0.122" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 1/8" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 0000 |
| 0.1265" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 0.1292" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.1345" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.136" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 150 | 00000000 | 00000 |
| 0.137" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 0000 |
| 0.1388" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 150 | 00000000 | 00000 |
| 9/64" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 0000 |
| 0.1534" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 150 | 00000000 | 00000 |
| 5/32" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 0000 |
| 11/64" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 0000 |
| 3/16" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 0000 |
| 0.1891" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 00000 |
| 0.194" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 00000 |
| 0.2035" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 00000 |
| 7/32" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 0000 |
| 0.2372" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 100 | 00000000 | 00000 |
| 1/4" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 0000 |
| 17/64" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 00000 |
| 9/32" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 0000 |
| 5/16" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 0000 |
| 21/64" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 50 | 00000000 | 00000 |
| 11/32" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 00000 |
| 3/8" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 00000 |
| 13/32" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 00000 |
| 7/16" | -0.0001" to 0.0001" | Hardened | __ | 100 | 0000000 | 00000 |
| 29/64" | -0.0001" to 0.0001" | Hardened | __ | 50 | 00000000 | 00000 |
| 15/32" | -0.0001" to 0.0001" | Hardened | __ | 50 | 0000000 | 00000 |
| 1/2" | -0.0001" to 0.0001" | Hardened | __ | 50 | 0000000 | 00000 |
| 17/32" | -0.0001" to 0.0001" | Hardened | __ | 50 | 0000000 | 00000 |
| 9/16" | -0.0001" to 0.0001" | Hardened | __ | 50 | 0000000 | 00000 |
| 19/32" | -0.0001" to 0.0001" | Hardened | __ | 25 | 0000000 | 00000 |
| 5/8" | -0.0001" to 0.0001" | Hardened | __ | 25 | 0000000 | 00000 |
| 21/32" | -0.0001" to 0.0001" | Hardened | __ | 25 | 0000000 | 00000 |
| 11/16" | -0.0001" to 0.0001" | Hardened | __ | 25 | 0000000 | 00000 |
| 23/32" | -0.0001" to 0.0001" | Hardened | __ | 25 | 0000000 | 00000 |
| 3/4" | -0.0001" to 0.0001" | Hardened | __ | 25 | 0000000 | 00000 |
| 25/32" | -0.0001" to 0.0001" | Hardened | __ | 10 | 0000000 | 0000 |
| 13/16" | -0.0001" to 0.0001" | Hardened | __ | 20 | 0000000 | 00000 |
| 7/8" | -0.0001" to 0.0001" | Hardened | __ | 10 | 0000000 | 00000 |
| 15/16" | -0.0001" to 0.0001" | Hardened | __ | 10 | 0000000 | 00000 |
| 1" | -0.0001" to 0.0001" | Hardened | __ | 5 | 0000000 | 00000 |
| 1 1/16" | -0.0001" to 0.0001" | Hardened | __ | 5 | 0000000 | 00000 |
| 1 3/32" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 25 | 00000000 | 00000 |
| 1 1/8" | -0.0001" to 0.0001" | Hardened | __ | 5 | 0000000 | 00000 |
| 1 5/32" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 25 | 00000000 | 00000 |
| 1 3/16" | -0.0001" to 0.0001" | Hardened | __ | 1 | 0000000 | 0000 |
| 1 7/32" | -0.0001" to 0.0001" | Hardened | ASTM A295 | 10 | 00000000 | 00000 |
| 1 1/4" | -0.0001" to 0.0001" | Hardened | __ | 1 | 0000000 | 0000 |
| 1 5/16" | -0.0001" to 0.0001" | Hardened | __ | 4 | 0000000 | 00000 |
| 1 3/8" | -0.0001" to 0.0001" | Hardened | __ | 1 | 0000000 | 0000 |
| 1 7/16" | -0.0001" to 0.0001" | Hardened | __ | 2 | 0000000 | 00000 |
| 1 1/2" | -0.0002" to 0.0002" | Hardened | __ | 1 | 0000000 | 0000 |
| 1 9/16" | -0.0002" to 0.0002" | Hardened | __ | 1 | 00000000 | 00000 |
| 1 5/8" | -0.0002" to 0.0002" | Hardened | __ | 1 | 0000000 | 00000 |
| 1 11/16" | -0.0002" to 0.0002" | Hardened | __ | 1 | 00000000 | 00000 |
| 1 3/4" | -0.0002" to 0.0002" | Hardened | __ | 1 | 0000000 | 00000 |
| 1 7/8" | -0.0002" to 0.0002" | Hardened | __ | 1 | 0000000 | 00000 |
| 2" | -0.0002" to 0.0002" | Hardened | __ | 1 | 0000000 | 00000 |
| 2 1/8" | -0.0002" to 0.0002" | Hardened | __ | 1 | 0000000 | 00000 |
| 2 1/4" | -0.0005" to 0.0005" | Hardened | __ | 1 | 0000000 | 00000 |
| 2 3/8" | -0.0002" to 0.0002" | Hardened | __ | 1 | 0000000 | 000000 |
| 2 1/2" | -0.0002" to 0.0002" | Hardened | __ | 1 | 0000000 | 000000 |
| 2 5/8" | -0.0002" to 0.0002" | Hardened | __ | 1 | 0000000 | 000000 |
| 2 3/4" | -0.0002" to 0.0002" | Hardened | __ | 1 | 0000000 | 000000 |
| 3" | -0.0005" to 0.0005" | Hardened | __ | 1 | 0000000 | 000000 |
| 3 1/4" | -0.0005" to 0.0005" | Hardened | __ | 1 | 00000000 | 000000 |
| 3 1/2" | -0.0005" to 0.0005" | Hardened | __ | 1 | 00000000 | 000000 |
| 4" | -0.0005" to 0.0005" | Hardened | __ | 1 | 00000000 | 000000 |
| 4 1/2" | -0.003" to 0.003" | Hardened | __ | 1 | 00000000 | 000000 |
| 1mm | -0.0025mm to 0.0025mm | Hardened | __ | 100 | 0000000 | 0000 |
| 1.25mm | -0.0025mm to 0.0025mm | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 1.5mm | -0.0025mm to 0.0025mm | Hardened | __ | 100 | 0000000 | 0000 |
| 1.75mm | -0.0025mm to 0.0025mm | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 2mm | -0.0025mm to 0.0025mm | Hardened | __ | 100 | 0000000 | 0000 |
| 2.25mm | -0.0025mm to 0.0025mm | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 2.5mm | -0.0025mm to 0.0025mm | Hardened | __ | 100 | 0000000 | 0000 |
| 2.75mm | -0.0025mm to 0.0025mm | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 3mm | -0.0025mm to 0.0025mm | Hardened | __ | 100 | 0000000 | 0000 |
| 3.25mm | -0.0025mm to 0.0025mm | Hardened | ASTM A295 | 250 | 00000000 | 00000 |
| 3.5mm | -0.0025mm to 0.0025mm | Hardened | __ | 100 | 0000000 | 0000 |
| 3.75mm | -0.0025mm to 0.0025mm | Hardened | ASTM A295 | 100 | 00000000 | 00000 |
| 4mm | -0.0025mm to 0.0025mm | Hardened | __ | 100 | 0000000 | 0000 |
| 4.25mm | -0.0025mm to 0.0025mm | Hardened | ASTM A295 | 100 | 00000000 | 00000 |
| 4.5mm | -0.0025mm to 0.0025mm | Hardened | __ | 50 | 0000000 | 0000 |
| 4.75mm | -0.0025mm to 0.0025mm | Hardened | __ | 250 | 00000000 | 00000 |
| 5mm | -0.0025mm to 0.0025mm | Hardened | __ | 100 | 0000000 | 0000 |
| 5.25mm | -0.0025mm to 0.0025mm | Hardened | ASTM A295 | 100 | 00000000 | 00000 |
| 5.5mm | -0.0025mm to 0.0025mm | Hardened | __ | 50 | 0000000 | 0000 |
| 5.75mm | -0.0025mm to 0.0025mm | Hardened | ASTM A295 | 100 | 00000000 | 00000 |
| 6mm | -0.0025mm to 0.0025mm | Hardened | __ | 50 | 0000000 | 0000 |
| 6.25mm | -0.0025mm to 0.0025mm | Hardened | ASTM A295 | 100 | 00000000 | 00000 |
| 6.5mm | -0.0025mm to 0.0025mm | Hardened | __ | 50 | 0000000 | 0000 |
| 6.75mm | -0.0025mm to 0.0025mm | Hardened | ASTM A295 | 50 | 00000000 | 00000 |
| 7mm | -0.0025mm to 0.0025mm | Hardened | __ | 50 | 0000000 | 0000 |
| 7.5mm | -0.0025mm to 0.0025mm | Hardened | __ | 100 | 00000000 | 00000 |
| 8mm | -0.0025mm to 0.0025mm | Hardened | __ | 25 | 0000000 | 0000 |
| 8.5mm | -0.0025mm to 0.0025mm | Hardened | __ | 50 | 00000000 | 0000 |
| 9mm | -0.0025mm to 0.0025mm | Hardened | __ | 20 | 0000000 | 0000 |
| 9.5mm | -0.0025mm to 0.0025mm | Hardened | __ | 50 | 00000000 | 00000 |
| 10mm | -0.0025mm to 0.0025mm | Hardened | __ | 20 | 0000000 | 0000 |
| 10.5mm | -0.0025mm to 0.0025mm | Hardened | __ | 50 | 00000000 | 00000 |
| 12mm | -0.0025mm to 0.0025mm | Hardened | __ | 10 | 0000000 | 0000 |
| 13mm | -0.0025mm to 0.0025mm | Hardened | __ | 5 | 0000000 | 0000 |
| 14mm | -0.0025mm to 0.0025mm | Hardened | __ | 5 | 0000000 | 0000 |
| 15mm | -0.0025mm to 0.0025mm | Hardened | __ | 5 | 0000000 | 0000 |
| 16mm | -0.0025mm to 0.0025mm | Hardened | __ | 5 | 0000000 | 0000 |
| 18mm | -0.0025mm to 0.0025mm | Hardened | __ | 3 | 0000000 | 0000 |
| 24mm | -0.0025mm to 0.0025mm | Hardened | __ | 3 | 0000000 | 00000 |
Tight-Tolerance Hard Wear-Resistant 52100 Alloy Steel Balls
- Yield Strength: 295,000 psi
- Hardness: Rockwell C60 (Very Hard)
- Specifications Met: ASTM A295
The diameter of these balls is held to a precise tolerance. They’re made from 52100 alloy steel, also known as chrome steel, which has high levels of carbon and chromium to make them extremely hard and resistant to wear. Often used as bearings, these balls are also hardened to increase their abrasion and impact resistance. They’re manufactured to ASTM A295 standards for quality and performance.
For technical drawings and 3-D models, click on a part number.
| Dia. | Dia. Tolerance | Heat Treatment | Mechanical Finish | Pkg. Qty. | Pkg. | |
Mirror-Like | ||||||
|---|---|---|---|---|---|---|
| 0.026" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 25 | 00000000 | 000000 |
| 1/32" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 25 | 00000000 | 00000 |
| 0.043" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 25 | 00000000 | 00000 |
| 3/64" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 25 | 00000000 | 00000 |
| 1/16" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 5 | 00000000 | 0000 |
| 5/64" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 25 | 00000000 | 00000 |
| 3/32" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 25 | 00000000 | 00000 |
| 7/64" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 25 | 00000000 | 00000 |
| 1/8" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 5 | 0000000 | 0000 |
| 9/64" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 5 | 0000000 | 0000 |
| 5/32" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 5 | 0000000 | 0000 |
| 11/64" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 5 | 00000000 | 00000 |
| 3/16" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 5 | 0000000 | 0000 |
| 7/32" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 5 | 0000000 | 00000 |
| 0.237" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 5 | 00000000 | 00000 |
| 1/4" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 2 | 0000000 | 0000 |
| 17/64" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 5 | 00000000 | 00000 |
| 9/32" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 2 | 0000000 | 0000 |
| 5/16" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 2 | 0000000 | 0000 |
| 11/32" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 5 | 00000000 | 00000 |
| 3/8" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 2 | 0000000 | 0000 |
| 13/32" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 2 | 00000000 | 00000 |
| 7/16" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 1 | 0000000 | 0000 |
| 15/32" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 1 | 0000000 | 0000 |
| 1/2" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 1 | 0000000 | 0000 |
| 17/32" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 1 | 0000000 | 00000 |
| 9/16" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 1 | 00000000 | 00000 |
| 5/8" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 1 | 00000000 | 00000 |
| 11/16" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 1 | 00000000 | 00000 |
| 3/4" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 1 | 00000000 | 00000 |
| 25/32" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 1 | 00000000 | 00000 |
| 13/16" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 1 | 00000000 | 00000 |
| 1 1/8" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 1 | 00000000 | 00000 |
| 1 3/16" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 1 | 00000000 | 00000 |
| 1 3/8" | -0.00005" to 0.00005" | Hardened | Ground and Polished | 1 | 00000000 | 00000 |