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Standard Sizes and Tolerances
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Product
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Standard Sizes
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TolerancesA
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Friability
Rating
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Standard
ferromanganese
Grades A, B, C
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8 × 4 in. (200 × 100 mm)
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90 lb (40.8-kg) lump, max
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10 % max passing 4-in. (100-mm) sieve
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4 |
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5 x 2 in. (125 × 50 mm)
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10 % max retained on 5-in. (125-mm) sieve
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10 % max passing 2-in. (50-mm) sieve
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4 × 1 in. (100 × 25 mm)
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10 % max retained on 4-in. (100-mm) sieve
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10 % max passing 1-in. (25-mm) sieve
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2 × 1⁄4in. (50 × 6.3 mm)
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10 % max retained on 2-in. (50-mm) sieve
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10 % max passing 1⁄4-in. (6.3-mm) sieve
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3⁄8in. × 12 mesh (9.5 × 1.4 mm)
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5 % max retained on 3⁄8-in. (9.5-mm) sieve
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5 % max passing No. 14 (1.4-mm) sieve
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1⁄4 in. × down (6.3 mm × down)
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5 % max retained on 1⁄4-in. (6.3-mm) sieve
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8 mesh × down (2.36 mm × down)
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5 % max retained on No. 8 (2.36-mm) sieve
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20 mesh × down (0.85 mm × down)
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5 % max retained on No. 20 (0.85 mm) sieve
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Medium-carbon
ferromanganese
Grades A, B, C, and D
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8 × 4 in. (200 × 100 mm)
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90-lb (40.8-kg) lump, max
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10 % max passing 4-in. (100-mm) sieve
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41⁄2
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5 × 2 in. (125 × 50 mm)
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10 % max retained on 5-in. (125-mm) sieve
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10 % max passing 2-in. (50-mm) sieve
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4 in. × down (100 mm × down)
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10 % max retained on 4-in. (100-mm) sieve
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12 % max passing 1⁄4-in. (6.3-mm) sieve
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2 in. × down (50 mm × down)
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10 % max retained on 2-in. (50-mm) sieve
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15 % max passing No. 8 (2.36-mm) sieve
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8 mesh × down (2.36 mm × down)
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5 % max retained on No. 8 (2.36-mm) sieve
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Medium-carbon
ferromanganese
Nitrided grade
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Briquetted only
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4 | ||
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Low-carbon
ferromanganese
Grades A and B
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6 × 2 in. (150 × 50 mm)
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10 % max retained on 6-in. (150-mm) sieve
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10 % max passing 2-in. (50-mm) sieve
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5 |
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4 × 1⁄4 in. (100 × 6.3 mm)
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10 % max retained on 4-in. (100-mm) sieve
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5 % max passing 1⁄4-in. (6.3-mm) sieve
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8 mesh × down (2.36 mm × down)
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5 % max retained on No. 8 (2.36-mm) sieve
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20 mesh × down (0.85 mm × down)
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5 % max retained on No. 20 (0.85-mm) sieve
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ASpecifications of sieve sizes used to define tolerances herein are as listed in Specification E11.
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