| ◇ 미국시험 및 재료협회 규격 ( ASTM Specification ) |
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ASTM A591, Steel Sheets, Cold-Rolled, Electrolytic Zinc-Coated
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| 1. Quanlities |
| Qualities | Base Metal |
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ASTM A366, Cold-rolled Carbon Steel Sheets,
Commercial Quality |
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ASTM A619, Cold-rolled Carbon Steel Sheets,
Drawing Quality |
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Drawing
Quality,
Special Killed |
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ASTM A620, Cold-rolled Carbon Steel Sheets,
Drawing Quality, Special Killed |
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ASTM A611, Cold-rolled Carbon Steel Sheets,
Structural Quality |
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| 2. Coating Weights |
| Coating Class |
Minimum Check Limit Triple Spot |
Minimum Check Limit Single Spot |
| Decimal Equivalents | Coating Weight |
Decimal Equivalents | Coating Weight |
| One Side | Total Both Sides |
One Side | Total Both Sides |
| in. | mm | oz/ft² | g/mm² | in. | mm |
oz/ft² | g/mm² |
A
B
C | none
0.000065
0.000140 |
none
0.00165
0.00356 | none
0.075
0.165 |
none
22.9
50.4 | none
0.000060
0.000125 |
none
0.00152
0.00318 | none
0.070
0.150 |
none
21.3
45.8 |
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| 3. Thickness Tolerances |
Specified Width,
in.(mm) |
Thickness Tolerances, Over and under, in.(mm) |
| Specified Thickness, in.(mm) |
Over 0.057
to 0.100
(1.45 to 2.54),
incl |
Over 0.039
to 0.057
(0.99 to 1.45),
incl |
Over 0.020
to 0.039
(0.51 to 0.99),
incl |
Over 0.014
to 0.020
(0.36 to 0.51),
incl |
0.014(0.36)
and thinner |
Up to 40(1020)
over 40 to 60
(1020 to 1520) |
0.005(0.13)
0.005(0.13) |
0.004(0.10)
0.004(0.10) |
0.003(0.08)
0.003(0.08) |
0.002(0.05)
0.002(0.05) |
0.0015(0.04) |
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| 4. |
Material furnished under this specification shall conform to the applicable requirements of ASTM A568 for steel, carbon and High-Strength Low-Alloy Hot-rolled Sheet, Hot-rolled Strip, and Cold-rolled Sheet, General Requirements except for thickness tolerances above. |
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