Technical specifications and application of ASTM A204 steel plates
The ASTM A204 standard defines requirements for molybdenum-alloy steel plates intended for the manufacture of welded steam boilers and vessels operating under pressure. The material’s high thermal stability and strength characteristics are ensured by precision alloying, making it indispensable in power engineering and the petrochemical industry.
EV Group China supplies rolled steel plates that meet three main strength classes, allowing engineers to optimize the metal consumption of structures while adhering to strict operational safety requirements.
| Grade | Ultimate Tensile Strength (UTS), MPa |
|---|---|
| A | 450-585 |
| B | 485-620 |
| C | 515-655 |
Mechanical properties of steels according to the ASTM A204 standard
The operational parameters of the materials vary depending on the selected grade, providing the necessary margin of ductility and resistance to deformation under high loads. The regulated mechanical property indicators are provided below.
| Mechanical Properties | Grade A | Grade B | Grade C |
|---|---|---|---|
| Tensile Strength, MPa | 450-585 | 485-620 | 515-655 |
| Yield Strength, MPa, min. | 255 | 275 | 295 |
| Elongation in 8″ (200 mm), min., % | 19 | 17 | 16 |
| Elongation in 2″ (50 mm), min., % | 23 | 21 | 20 |