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Flat steel for spring leaves |
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| Material |  |
| Electric steel, with the chemicalcomposition and the mecanical caracteristics acording to STAS 795-87 |
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| Dimensions, weight and limit tolerances | |
| According to STAS 3020-89 |
| Width a [mm] | Tricness b [mm] | Weight [Kg/m] | ||
| Value [mm] | Limit tolerance [mm] | Value [mm] | Limit tolerance [mm] | |
| 110 | ± 0,9 | 10 | ± 0,30 | 8,63 |
| 12 | ± 0,35 | 10,36 | ||
| 120 | ± 0,9 | 10 | ± 0,30 | 9,42 |
| 12 | ± 0,35 | 11,30 | ||
| 150 | ± 1,2 | 14,4 | ± 0,40 | 17,07 |
Shape deviations
| Convexity of the section side faces for: | a <= 120 and b = 10 mm | max. 0,20 mm |
| a <= 120 and b = 12 mm | max. 0,30 mm | |
| a > 120 | max. 0,40 mm | |
| Tickness uneveness measured in cross section for: | a <= 120 and b = 10 mm | max. 0,20 mm |
| a <= 120 and b = 12 mm | max. 0,25 mm | |
| a > 120 | max. 0,30 mm | |
| Bend: | -sickle-shaped | max. 0,20 mm |
| -longitudinal | max. 0,50 mm |
Delivery lengths.
| Length types |
Delivery lengths [m] |
Permitted dev. [mm] |
|
Fixed lengths |
5 | - 0 / + 10 |
Delivery state, delivery
| Delivery state | Delivery |
| Rough rolled, straightened and without heat treatment | Without packing and unprotected to corrosion, individual and for flat steel with the weight <= 15Kg/pcs. in bundles with the weight of 500 Kg |