The main differences between A283 Grade C and A283 Grade D steel are their mechanical properties, with Grade D having higher tensile and yield strengths but lower elongation compared to Grade C.
Chemical Composition of ASTM A283 Grade C & D Plates
| Elements | Heat Analysis, % | |
| Grade C | Grade D | |
| Carbon, max | 0.24 | 0.27 |
| Manganese, max | 0.90 | 0.90 |
| Phosphorus, max | 0.030 | 0.030 |
| Sulfur, max | 0.030 | 0.030 |
| SiliconPlates 1-1/2in. [40mm] and under, maxPlates over 1-1/2in. [40mm] | 0.400.15-0.40 | 0.400.15-0.40 |
| Copper, min% when copper is specified | 0.20 | 0.20 |
Mechanical Properties
| Grade C | Grade D | |
| Tensile strength, ksi [MPa] | 55-75 | 60-80 [415-550] |
| Yield point, min, ksi [Mpa] | 30 | 33 [230] |
| Elongation in 8 in. [200 mm], min, %B | 22 | 20 |
| Elogination in 2 in. [50mm], min, %B | 25 | 23 |
Application of Carbon Steel ASTM A283 Grade C ＆ D
1. Building structure
Because of its high strength and good toughness, A283 Grade C & D Plates can be used to manufacture beams, columns, supports and other key components in building structures. It can withstand large loads and has good seismic performance to ensure the stability and safety of buildings.
2. Machinery manufacturing
In the field of mechanical manufacturing, this steel plate enables the manufacture of various mechanical equipment and parts, such as gears, shafts, bearing seats, etc. Its good mechanical properties and machining properties make it able to meet the requirements of various complex shapes and precision.
3. Pressure vessel
Manufacture pressure vessels such as storage tanks, pipes, etc. These devices need to withstand certain internal and external pressures, so the material is required to have high strength and good toughness.
4. Shipbuilding
This steel plate can withstand various loads and corrosion in the Marine environment, ensuring the navigation safety and durability of the ship.
5. Bridge construction
As an important transportation facility, Bridges need to bear large loads and complex stress states. Due to its high strength and good toughness, A283 steel can be used to manufacture key components such as main beams and piers of Bridges.
Performance Advantages
1.A283GrC
High strength, corrosion resistant carbon structural steel plate.
Strict control of chemical composition, excellent mechanical properties.
Widely used in power plant construction, boiler manufacturing, pressure vessels, Bridges and buildings and other fields.
It has excellent welding performance and good corrosion resistance.
2.A283GrD
Medium and low strength carbon structural steel plate.
High strength and toughness, suitable for structural applications requiring high stress.
It has good welding performance and cold forming performance.
The room temperature impact toughness is generally between 600 kJ/m and 800 kJ/m.
