A588GrA, A588GrB, and A588GrK are all types of high-strength, low-alloy structural steel plates. They are often used in construction and bridge-building applica
A588GrA, A588GrB, and A588GrK are all types of high-strength, low-alloy structural steel plates. They are often used in construction and bridge-building applications due to their corrosion resistance and durability. Here is an overview of the execution standard and mechanical properties of these three types of steel plates.
Execution Standard
A588GrA, A588GrB, and A588GrK all follow the ASTM A588/A588M-19 standard, which covers high-strength, low-alloy structural steel plates. This standard provides requirements for chemical composition, mechanical properties, and other factors that impact the performance of the steel plates.
Chemical Composition
The chemical composition of A588GrA, A588GrB, and A588GrK can impact their mechanical properties, including strength, ductility, and toughness. The following table provides an overview of the chemical composition of these three types of steel plates:
| Element | A588GrA | A588GrB | A588GrK |
|---|---|---|---|
| Carbon | 0.19% max | 0.20% max | 0.17% max |
| Manganese | 0.80-1.25% | 0.75-1.35% | 1.00-1.50% |
| Phosphorus | 0.030% max | 0.030% max | 0.030% max |
| Sulfur | 0.030% max | 0.030% max | 0.030% max |
| Silicon | 0.30-0.65% | 0.15-0.50% | 0.25-0.50% |
| Copper | 0.25-0.40% | 0.20-0.40% | 0.20-0.50% |
| Nickel | 0.40-0.70% | 0.50% max | 0.70-1.00% |
| Chromium | 0.40-0.65% | 0.40-0.65% | 0.40-0.70% |
Mechanical Properties
The mechanical properties of A588GrA, A588GrB, and A588GrK are crucial in determining their suitability for various applications. These properties include yield strength, tensile strength, elongation, and impact resistance. The following table provides an overview of the mechanical properties of these three types of steel plates:
| Property | A588GrA | A588GrB | A588GrK |
|---|---|---|---|
| Yield strength | 345 MPa min | 345 MPa min | 345 MPa min |
| Tensile strength | 485 MPa min | 485 MPa min | 485 MPa min |
| Elongation | 21% min | 21% min | 21% min |
| Charpy V-notch | 70 J min | 70 J min | 70 J min |
| impact strength | at -20°C | at -20°C | at -20°C |
| Charpy V-notch | 40 J min | 40 J min | 40 J min |
| impact strength | at -40°C | at -40°C | at -40°C |
