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A709 Grade 250 steel condition: Plate, Sheet, Round Bar, Section Steel
category | Structural steel(all) | Steel plate | Steel bar | |||||
Thickness(mm) | ≤20 | 20~≤40 | 40~≤65 | 65~≤100 | ≤20 | 20~≤40 | 40~≤100 | |
C max | 0.25 | 0.25 | 0.25 | 0.25 | 0.27 | 0.26 | 0.27 | 0.28 |
Mn max | ~ | ~ | 0.80-1.20 | 1.80-1.20 | 1.80-1.20 | 0.30-0.90 | 0.30-0.90 | 0.30-0.90 |
P max | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 |
S max | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
Si max | ≤0.40 | ≤0.40 | ≤0.40 | 0.15-0.40 | 0.15-0.40 | ≤0.40 | ≤0.40 | ≤0.40 |
Cu max | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 |
Grade |
steel thickness |
Steel flange thickness |
yield strength |
Tensile strength |
elongation | |||
Steel plate | sectional material | |||||||
200mm | 50mm | 200mm | 200mm | |||||
250 |
≤100 | ≤75 | 250min | 400-500 | 20 | 23 | 20 | 21 |
~ | > 75 | 250min | 400min | ~ | ~ | 20 | 19 |