The chemical composition and mechanical properties of A572 steel plate are governed by ASTM code. While ASTM regulations are widely accepted around the world, some countries or projects may require steel plate materials that meet other standards. For projects requiring EN standard steel plate, S355 may be able to be used in place of A572-50, as these grades are generally considered equivalent and have various applications, including use in wind energy projects.
While not exact equivalents, other mild carbon or HSLA plate grades – such as ASTM A36 – may also be suitable for similar applications, as these grades often have similar chemical and mechanical properties.
MATERIAL PROPERTIES
The following material properties are ASTM specifications and will be confirmed on the Mill Test Report.
|
GRADE |
YIELD POINT (KSI) |
TENSILE STRENGTH (KSI) |
MIN. 8" ELONGATION % |
|
42 |
42 |
60 |
20 |
|
50 |
50 |
65 |
18 |
|
55 |
55 |
70 |
17 |
|
60 |
60 |
75 |
16 |
|
65 |
65 |
80 |
15 |
Chemical Composition
The following composition properties are ASTM specifications for the A572 grades.
| Grade 42 | + |
|
GRADE 42 |
|
|
CARBON MAX |
0.21% |
|
MANGANESE MAX |
1.35% |
|
PHOSPHORUS MAX |
0.030% |
|
SULFUR MAX |
0.030% |
|
SILICON TO 1 1/2" THICK, MAX |
0.40% |
|
SILICON OVER 1 1/2" THICK |
0.15-0.40% |
|
GRADE 50 |
|
|
CARBON MAX |
0.23% |
|
MANGANESE MAX |
1.35% |
|
PHOSPHORUS MAX |
0.030% |
|
SULFUR MAX |
0.030% |
|
SILICON TO 1 1/2" THICK. MAX |
0.40% |
|
SILICON OVER 1 1/2" THICK |
0.15-0.40% |
Benefits of A572
A572 steel plate is lightweight, yet offers great strength, ductility and machinability, making it ideal for use in structural applications. These properties make A572 relatively simple to shape into different structures while also maintaining the ability to bear great stresses and loads. A572 is also one of the most economically priced grades of steel plate.
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