ASTM A516 Boiler Pressure Vessel Steel Plate

ASTM A516:

The ASTM A516 specification is the Standard Specification for Pressure Vessel Plates, Carbon Steel, for Moderate- and Lower-Temperature Service for plates used in pressure vessel applications where excellent notch toughness is required.

ASTM A516/ A516, identical with ASME SA-516/ SA-516M, is the standard specification for carbon steel pressure vessel plates for moderate- and lower-temperature services. Carbon steel plates made in accordance with ASTM A516 are primarily intended for service in welded pressure vessels where improved notch toughness is important. They can also be used for the manufacture of electric-fusion-welded steel pipes in accordance with ASTM A671 or ASTM A672. S/O plate flanges and blind flanges according to ASME B16.5, as well as line blanks (spectacle blind flanges, spades, spacers) according to ASME B16.48, may also be manufactured from ASTM A516 plates.

Steel plates under this specification are available in four grades classified according to the minimum tensile strength: Grade 55 [Grade 380], Grade 60 [Grade 415], Grade 65 [Grade 450], Grade 70 [Grade 485]. The maximum thickness of ASTM A516 plates is limited only by the capacity of the composition to meet the specified mechanical property requirements.

Chemical Composition Requirements:

Mechanical Properties

Pressure vessel Steel Plate:

Pressure vessel steel plate covers a range of steel grades that are designed for use in pressure vessel, boilers, heat exchangers and any other vessel that contains a gas or liquid at high pressures. Familiar examples include gas cylinders for cooking and for welding, oxygen cylinders for diving and many of the large metallic tanks that you see in an oil refinery or chemical plant. There is a huge range of different chemicals and liquid that that stored and processed under pressure. These range from relatively benign substances such as milk and palm oil to crude oil and natural gas and their distillates to highly lethal acids and chemicals such as methyl isocyanate. So of these processes need the gas or liquid to be very hot, whilst others contain it at very low temperatures. As a result there is a wide variety of different pressure vessel steel grades that meet the different use cases.

In general these can be divided into three groups. There is a group of carbon steel pressure vessel grades. These are standard steels and can cope with many applications where there is low corrosion and low heat. As heat and corrosion have more effect on the steel plates chromium, molybdenum and nickel are added to provide additional resistance. Finally as the % of chromium, nickel and molybdenum increase you have highly resistant stainless steel plates that are used in critical applications and where oxide contamination needs to be avoided – such in the food and pharmaceutical industries.

The manufacture of pressure vessels is tightly regulated as a result of the risks involved and as a consequence the materials that can be used in vessels is also tightly specified. The most common specifications for pressure vessel steels are the EN10028 standards – which are European in origin – and the the ASME/ASTM standards which are from the US.

Our strength is in the very high specification pressure vessel  steel plate used in the oil and gas industry and specifically in steel plate resistant to Hydrogen Induced Cracking (HIC) where we have one of the largest stocks worldwide.