ASTM A588 structural steel plates are low alloy high strength structural steel. ASTM A588 structural steel plates have better atmospheric corrosion resistance i
ASTM A588 structural steel plates are low alloy high strength structural steel. ASTM A588 structural steel plates have better atmospheric corrosion resistance in most environments than carbon structural steels with or without copper addition.
When properly exposed to the atmosphere, ASTM A588 structural steel plates are suitable for many applications in the bare or unpainted condition. ASTM A588 steel grades are A588 grade A, A588 grade B, A588 grade C, A588 grade K.
Atmospheric corrosion resistant ASTM A588 structural steel plates chemical composition:
| ASTM A588 | A588 grade A | A588 grade B | A588 grade C | A588 grade K |
| C | ≤ 0.19 | ≤0.20 | ≤0.15 | ≤0.17 |
| Mn | 0.80-1.25 | 0.75-1.35 | 0.80-1.35 | 0.50-1.20 |
| P | ≤0.04 | ≤0.04 | ≤0.04 | ≤0.04 |
| S | ≤0.05 | ≤0.05 | ≤0.05 | ≤0.05 |
| Si | 0.30-0.65 | 0.15-0.50 | 0.15-0.40 | 0.25-0.50 |
| Ni | ≤0.40 | ≤0.50 | 0.25-0.50 | ≤0.40 |
| Cr | 0.40-0.65 | 0.40-0.70 | 0.30-0.50 | 0.40-0.70 |
| Mo | - | - | - | ≤0.10 |
| Cu | 0.25-0.40 | 0.20-0.40 | 0.20-0.50 | 0.30-0.50 |
| V | 0.02-0.10 | 0.01-0.10 | 0.01-0.10 | - |
| Nb | - | - | - | 0.005-0.50 |
Atmospheric corrosion resistant ASTM A588 structural steel plates mechanical properties:
| ASTM A588 | <100mm | ≥100-125mm | >125-200 |
| Tensile strength min MPa | 485 | 460 | 435 |
| Yield strength min MPa | 345 | 315 | 290 |
| Elongation min | 21 | 21 | 21 |
ASTM A588 structural steel plates are limited up to 8 in. [200 mm] inclusive in thickness. ASTM A588 structural steel plates are mainly for welded, riveted, or bolted construction. They are intended primarily for use in welded bridges and buildings where savings in weight or added durability are important.
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