ASTM A204/204M Mo-Alloy Steel Plates for Pressure Vessel

ASTM A204/204M Mo-Alloy Steel Plates for Pressure Vessel

ASTM A204/A204M molybdenum alloy steel plates are a specialized class of steel designed for use in high-temperature and high-pressure environments, such as those found in the fabrication of boilers and pressure vessels. These plates are engineered with a molybdenum alloy to enhance their strength, corrosion resistance, and thermal stability, making them ideal for demanding applications in industries such as petrochemical, oil and gas, and power generation. Available in three grades—A, B, and C—ASTM A204 plates offer varying levels of tensile strength and yield strength, ensuring they can meet the specific requirements of different engineering and structural projects. With their excellent performance in high-temperature settings, these steel plates are a preferred choice for constructing components like steam drums, heat exchangers, and other industrial process equipment, where reliability and durability are paramount. ASTM A204/A204M plates not only adhere to stringent quality standards but also provide the versatility needed for modern industrial applications, making them an essential material in the realm of heavy-duty construction and manufacturing.

Chemical Composition of ASTM A204/204M Mo-Alloy Steel Plates for Pressure Vessel

Element	Grade A (%)	Grade B (%)	Grade C (%)
Carbon, max:
– Up to 1 in. (25 mm) thickness	0.18	0.20	0.23
– Over 1 in. to 2 in. (50 mm) thickness	0.21	0.23	0.26
– Over 2 in. to 4 in. (100 mm) thickness	0.23	0.25	0.28
– Over 4 in. (100 mm) thickness	0.25	0.27	0.28
Manganese, max (Heat/Product)	0.90/0.98	0.90/0.98	0.90/0.98
Phosphorus, max	0.035	0.035	0.035
Sulfur, max	0.035	0.035	0.035
Silicon (Heat/Product)	0.15–0.40 / 0.13–0.45	0.15–0.40 / 0.13–0.45	0.15–0.40 / 0.13–0.45
Molybdenum (Heat/Product)	0.45–0.60 / 0.41–0.64	0.45–0.60 / 0.41–0.64	0.45–0.60 / 0.41–0.64

Mechanical Properties of ASTM A204/204M Mo-Alloy Steel Plates for Pressure Vessel

Property	Grade A	Grade B	Grade C
Tensile Strength, ksi (MPa)	65–85 (450–585)	70–90 (485–620)	75–95 (515–655)
Yield Strength, min, ksi (MPa)	37 (255)	40 (275)	43 (295)
Elongation in 8 in. (200 mm), min, %	19	17	16
Elongation in 2 in. (50 mm), min, %	23	21	20

Specification

Standard	ASTM A204/204M Mo-Alloy Steel Plates for Pressure Vessel
Steel Grade/Material	A, B, C
Dimension	T 5-350mm × W 900-4100mm × L 3000-25000mm
Packing	Packed with steel-framed plywood pallets
Supply Conditions	AR = as-rolled TM = thermo-mechanical controlled processing CR = controlled QT = quenched and tempered N = normalized
Place of Origin	Made in China
MOQ	50 Tons
Transportation	Railway, By Sea

Applications of ASTM A204/204M Mo-Alloy Steel Plates for Pressure Vessel

Pressure Vessels: Used in the construction of pressure vessels that operate at elevated temperatures, such as those used in the petrochemical and chemical industries.

Boilers: Ideal for components in boilers, especially those that require high strength at elevated temperatures.

Heat Exchangers: Utilized in heat exchangers where good thermal conductivity and resistance to thermal cycling are important.

Steam Drums: Used in steam drums and other high-temperature steam service equipment.

Industrial Process Equipment: Employed in various industrial processes that involve high-pressure and high-temperature conditions, such as oil refineries and gas processing plants.

Fabricated Equipment: Suitable for fabricated equipment used in the power generation industry.