Pressure vessel steel has several outstanding properties, making it a key material in different industries and applications. Commonly, it is used to manufacture compression chambers, domestic water storage tanks, petrochemical facilities, and more, which are used to store various substances at different temperatures. Boiler quality plate is a subfamily of steel alloys used in the production of pressure vessels and pipelines. Boiler quality plate and pressure vessel steel are available in various sizes and thicknesses, with an array of options for different applications. 

Although DIN 17155 is now an outdated German specification, it is still referred to by this name because of its popularity and reliability. DIN 17155 has been superseded by EN 10028, and there are suitable alternatives to the previous DIN 17155 grades. In this blog post, we look at why DIN 17155 is considered the ideal pressure vessel steel and what materials have been developed to replace it.

Properties of DIN 17155

DIN 17155 and the materials that have superseded this specification have excellent properties that have contributed to its widespread use across many industries. Its properties include corrosion and creep resistance, low-temperature toughness and good weldability.

Corrosion Resistance

DIN 17155 and EN 10028 display good corrosion resistance and can be enhanced with additional materials. This property is crucial in applications where substances may cause harm to machinery or personnel if not correctly contained. Pressure vessel steel is commonly used in storage tanks that contain chemicals, fuels and chemicals, both above and below ground. 

High Toughness

It is necessary for pressure vessel steels to have high toughness to maintain the safety and reliability of products and their manufacturing processes. Pressure vessel steels such as DIN 17155, or EN 10028, have high toughness and notch toughness, which means they can be safely used in many applications, especially in the gas production and petrochemical industries. This property enables high-quality products that will meet high industry standards.


Weldability is another important factor because it allows components to be welded together to make specific shapes, such as cylinders or spheres, and produces high-quality pieces. High weldability ensures internal robustness of parts is maintained.


Masteel is a UK steel supplier that focuses on offering premium quality stock to clients around the world. We provide a diverse range of steel products, including pressure vessel steel and boiler quality plate, profiling services, and testing services to meet our client’s needs and applications.

DIN 17155 is an outdated German specification for pressure vessel steels and boiler quality plates. However, as many of our customers still refer to this standard, we include it on our website for cross-reference purposes. The outdated grades include DIN17155 HI, HII, 17MN4, and 19MN6, which have been superseded by EN 10028. Please continue below for more information on alternative steels.

Alternatives for DIN 17155 17MN4 include ASTM A516 Grade 65, ASME SA516 Grade 65, P295GH, and BS1501-224-460A/B, and alternatives for DIN 17155 19MN6 include P355NH and BS1501-225-490A/B.

For more information on high-quality pressure vessel steels, including those that have superseded DIN 17155, contact Masteel today and we’ll be happy to help.