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Thickness Tolerances
(per ASTM A924 - 97a)
Coated sheets may be ordered to either of the tolerance ranges in the tables below.
These tolerance tables are for minimum thickness ordering practices. When nominal thickness is specified, half of the tolerance applies over, and half under the ordered thickness.
Table 1
Thickness is measured at any point across the width not less than 3/8 inch from the edge.These tolerances have often been referred to as "full" standard tolerances.
| Ordered
Width (inches) |
Thickness Tolerance Over (inches) |
||||
| .0230 and thinner | >.0230-.0430 | >.0430-.0610 |
>.0610-.0750 | >.0750-.1000 | |
< 48.75 |
.0060 |
.0080 |
.0100 |
.0120 |
.0140
(< 32") |
Table 2
Thickness is measured at any point across the width not less than 1 inch from the edge. These tolerances have often been referred to as "half" standard tolerances.
| Ordered Width(inches) | Thickness Tolerance Over (inches) |
||||
| .0230 and thinner | >.0230-.0430 | >.0430-.0500 |
>.0500-.0750 | >.0750-.1000 | |
< 48.75 |
.0040 |
.0040 |
.0040 |
N/A |
N/A |
GALVALUME and GALVANIZED theoretical product weight |
||||||
GALVALUME |
GALVANIZED |
GALVALUME |
GALVANIZED |
|||
ORD THK |
TOTAL WT |
TOTAL WT |
ORD THK |
TOTAL WT |
TOTAL WT |
|
in. |
lb/sqft |
lb/sqft |
in. |
lb/sqft |
lb/sqft |
|
of prod. |
of prod. |
of prod. |
of prod. |
|||
------- |
------- |
------- |
------- |
------- |
------- |
|
0.014 |
0.5371 |
0.5711 |
0.045 |
1.8017 |
1.8358 |
|
0.015 |
0.5779 |
0.6119 |
0.046 |
1.8425 |
1.8766 |
|
0.016 |
0.6187 |
0.6527 |
0.047 |
1.8833 |
1.9174 |
|
0.017 |
0.6594 |
0.6935 |
0.048 |
1.9241 |
1.9582 |
|
0.018 |
0.7002 |
0.7343 |
0.049 |
1.9649 |
1.9990 |
|
0.019 |
0.7410 |
0.7751 |
0.050 |
2.0057 |
2.0398 |
|
0.020 |
0.7818 |
0.8159 |
0.051 |
2.0465 |
2.0806 |
|
0.021 |
0.8226 |
0.8567 |
0.052 |
2.0873 |
2.1214 |
|
0.022 |
0.8634 |
0.8975 |
0.053 |
2.1281 |
2.1621 |
|
0.023 |
0.9042 |
0.9383 |
0.054 |
2.1689 |
2.2029 |
|
0.024 |
0.9450 |
0.9791 |
0.055 |
2.2097 |
2.2437 |
|
0.025 |
0.9858 |
1.0199 |
0.056 |
2.2505 |
2.2845 |
|
0.026 |
1.0266 |
1.0607 |
0.057 |
2.2913 |
2.3253 |
|
0.027 |
1.0674 |
1.1015 |
0.058 |
2.3320 |
2.3661 |
|
0.028 |
1.1082 |
1.1423 |
0.059 |
2.3728 |
2.4069 |
|
0.029 |
1.1490 |
1.1831 |
0.060 |
2.4136 |
2.4477 |
|
0.030 |
1.1898 |
1.2239 |
0.061 |
2.4544 |
2.4885 |
|
0.031 |
1.2306 |
1.2647 |
0.062 |
2.4952 |
2.5293 |
|
0.032 |
1.2714 |
1.3054 |
0.063 |
2.5360 |
2.5701 |
|
0.033 |
1.3122 |
1.3462 |
0.064 |
2.5768 |
2.6109 |
|
0.034 |
1.3530 |
1.3870 |
0.065 |
2.6176 |
2.6517 |
|
0.035 |
1.3938 |
1.4278 |
0.066 |
2.6584 |
2.6925 |
|
0.036 |
1.4346 |
1.4686 |
0.067 |
2.6992 |
2.7333 |
|
0.037 |
1.4754 |
1.5094 |
0.068 |
2.7400 |
2.7741 |
|
0.038 |
1.5161 |
1.5502 |
0.069 |
2.7808 |
2.8149 |
|
0.039 |
1.5569 |
1.5910 |
0.070 |
2.8216 |
2.8557 |
|
0.040 |
1.5977 |
1.6318 |
0.071 |
2.8624 |
2.8965 |
|
0.041 |
1.6385 |
1.6726 |
0.072 |
2.9032 |
2.9373 |
|
0.042 |
1.6793 |
1.7134 |
0.073 |
2.9440 |
2.9780 |
|
0.043 |
1.7201 |
1.7542 |
0.074 |
2.9848 |
3.0188 |
|
0.044 |
1.7609 |
1.7950 |
0.075 |
3.0256 |
3.0596 |
|
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