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About Stainless Steel
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Compare over 25 types of stainless steel to find the right material for you—all with material certificates for traceability.
Multipurpose 304 Stainless Steel Balls
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Whether inside pumps or furnace parts, these balls can be used in any mildly corrosive, high-temperature conditions. Made of 304 stainless steel, they won’t degrade when exposed to mild chemicals and water, even at temperatures up to 1500° F. They’re passivated to wash away surface particles that cause rust, and they’re polished to a mirror-like finish that contaminants can’t stick to. The result is balls that stay smooth and stand the test of time. These balls are made to strict ISO 3290 standards for roundness and surface quality.
Although 304 balls aren’t as wear resistant as 440C balls, they’re easier to fabricate. They’re also nonmagnetic.
Grade 100—Great for mechanical applications where you don’t need the exacting tolerances of Grade 25.
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Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Stainless Steel Balls | 5 lb. Packs of Stainless Steel Balls | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dia. | Dia. Tolerance | Fabrication | Hardness | Specs. Met | Magnetic Properties | Appearance | Pkg. Qty. | Pkg. | Pkg. Qty. | Pkg. | ||||
Grade 100 | ||||||||||||||
| 1/16" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 100 | 9291K41 | 00000 | — | ——— | 0 | ||
| 3/32" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 100 | 9291K42 | 0000 | — | ——— | 0 | ||
| 1/8" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 100 | 9291K43 | 0000 | — | ——— | 0 | ||
| 5/32" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 100 | 9291K44 | 0000 | — | ——— | 0 | ||
| 3/16" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 100 | 9291K45 | 0000 | 4,800 | 9291K451 | 0000000 | ||
| 7/32" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 100 | 9291K46 | 0000 | — | ——— | 0 | ||
| 1/4" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 100 | 9291K47 | 00000 | 2,000 | 9291K471 | 000000 | ||
| 9/32" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 100 | 9291K48 | 00000 | — | ——— | 0 | ||
| 5/16" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 50 | 9291K49 | 00000 | — | ——— | 0 | ||
| 11/32" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 25 | 9291K51 | 00000 | — | ——— | 0 | ||
| 3/8" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 25 | 9291K52 | 00000 | — | ——— | 0 | ||
| 7/16" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 25 | 9291K53 | 00000 | — | ——— | 0 | ||
| 1/2" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 15 | 9291K54 | 00000 | 250 | 9291K541 | 000000 | ||
| 5/8" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 5 | 9291K56 | 00000 | — | ——— | 0 | ||
| 3/4" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 5 | 9291K58 | 00000 | 70 | 9291K581 | 00000 | ||
| 1" | -0.0005" to 0.0005" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 1 | 9291K63 | 00000 | 30 | 9291K631 | 000000 | ||
| 1 1/4" | -0.001" to 0.001" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 1 | 9291K65 | 00000 | — | ——— | 0 | ||
| 1 1/2" | -0.001" to 0.001" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 1 | 9291K67 | 00000 | — | ——— | 0 | ||
| 1 3/4" | -0.001" to 0.001" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 1 | 9291K69 | 00000 | — | ——— | 0 | ||
| 2" | -0.001" to 0.001" | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 1 | 9291K71 | 00000 | — | ——— | 0 | ||
| 3 mm | -0.0127 mm to 0.0127 mm | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 250 | 9291K73 | 0000 | — | ——— | 0 | ||
| 4 mm | -0.0127 mm to 0.0127 mm | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 50 | 9291K75 | 0000 | — | ——— | 0 | ||
| 5 mm | -0.0127 mm to 0.0127 mm | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 50 | 9291K76 | 0000 | — | ——— | 0 | ||
| 6 mm | -0.0127 mm to 0.0127 mm | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 50 | 9291K77 | 0000 | — | ——— | 0 | ||
| 8 mm | -0.0127 mm to 0.0127 mm | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 25 | 9291K79 | 00000 | — | ——— | 0 | ||
| 10 mm | -0.0127 mm to 0.0127 mm | Cold Worked | Rockwell C25 (Hard) | ASTM A240, ISO 3290, SAE J405 | Nonmagnetic | Mirror Like | 10 | 9291K81 | 0000 | — | ——— | 0 | ||
