A204 Pressure Vessel Steel Plate

ASTM A204 boiler vessel plate is molybdenum alloy steel plate, mainly suitable for welding boilers and high temperature pressure vessels


According to the molybdenum content, ASTM A204 boiler vessel plate is divided into 3 grades: A, B, C. The thickness of ASTM A204 boiler vessel plates is limited only by the ability of the chemical composition to meet the specified mechanical property requirements. ASTM A204 boiler vessel plates are widely used in petroleum, chemical industry, power station, boiler and other industries, particularly in the manufacture of reactors, heat exchangers, separators, spherical tanks, liquefied gas, nuclear reactor pressure vessels, boiler drum steam, liquefied petroleum gas, hydropower stations, high pressure pipelines, etc.


Product Parameters

Product NameA204 Pressure Vessel Steel Plate
Production ProcessHot Rolling, Cold Rolling
Material StandardsAISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, etc.
Length1m-12m, or Customized Size
Delivery ConditionsRolling, Annealing, Quenching, Tempered or Standard
Surface ProcessOrdinary, Wire Drawing, Laminated Film

Chemical Composition

A204Upper limit of Chemical Element Content (%)
Class A0.18-0.250.13-0.450.90-0.980.0350.0350.45-0.60
Class B0.20-0.270.13-0.450.90-0.980.0350.0350.45-0.60
Class C0.23-0.280.13-0.450.90-0.980.0350.0350.45-0.60

Mechanical Properties

A204Tensile Strength kis[MPa]Yield Strength kis[MPa]Elongation Gauge length 8in.[200mm],%Elongation Gauge length 2in.[50mm],%
GradeA70-90 [485-620]37 [255]1923
GradeB75-95 [515-655]40 [275]1721
GradeC75-95 [515-655]43 [295]1620

Physical Performance

Physical PerformanceMetricImperial
Density7.80g/cc0.282 lb/in³

Scope of Application

ASTM A203 boiler vessel plate is widely used in petroleum, chemical industry, power station, boiler and other industries, for the manufacture of reactor, heat exchanger, separator, spherical tank, oil and gas tank, high pressure pipeline, water turbine and other equipment and components.



We have complete testing equipment and strong technical force. The company has advanced production equipment, equipped with key equipment such as pressing machines, large heat treatment furnaces, beveling machines, sawing machines, large sandblasting machines, and various testing instruments.


Our products are processed by professional technicians, and each product is carefully screened before shipment. We′re pleased to get your Inquiry and we will come back to as soon as possible.


We provide products with competitive prices based on good quality and schedule each shipment on time. We′re pleased to get your Inquiry and we will come back to as soon as possible.


Our main manufactures are stainless steel, galvanized steel, carbon steel and etc. That apply to engineering, coal mine, textile, electric power, boiler, machinery, military industry and other fields.

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The issues you care about

Yes, we could provide the free samples on conditions it is available in stocks, however, the transportation fee is borne by buyer.

Each piece of products is manufactured by certified workshops, inspected piece by piece according to national QA/QC standard. We also could issue the warranty to customer to guarantee the quality.

We accept third-party inspections such as SGS, V-trust, TUV, DNV, etc.

Yes, we could make custom products according to your specific requirements.

Generally, we pack our goods in bundles or coils with rods or belts, we could also pack the goods as the customers’ requirement.

30% T/T in advance, the balance 70% before delivery. We will show you the photos of products and package before you pay the balance.


For stocks, we could transport the goods to loading port within 7 – 15 days after we received your deposit. For production period, it usually takes about 15 days-30 days after receiving the deposit.

Our company has the ability to supply large projects and offers excellent preferential policies for large orders.

You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

Under normal circumstances, we ship from Shenzhen, Shanghai, Tianjin, Qingdao, Ningbo ports, you can choose other ports according to your needs.

Of course, we welcome customers from all over the world to visit our factory. However, some of the plants are not open to the public.

In general, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry during the next working day.


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