Worldwide fabricators who supply the oil, gas and petrochemical industry, require the highest specification steels for use in the manufacture of weldable steel pressure vessels and industrial boilers. 16Mo3, which is supplied under the EN 10028 euro norm specification, is one of these steels.

16Mo3 is a chrome molybdenum based steel which has excellent heat resistance and corrosion resistant characteristics. For these reasons alone, the steel is a popular in the manufacture of pressurised vessels and boilers. The material offers good welding properties when using conventional welding methods and due to the materials excellent heat resistance, 16Mo3 is also used in pipework for transporting hot liquids.

Added chromium in the steel increases the corrosion resistance whilst the higher molybdenum content promotes the increase in resistance to elevated temperatures. 16Mo3 also has good hot and cold forming properties and is normally delivered in ‘as rolled’ condition. Consideration should be made concerning the level of tensile strength required before procuring 16Mo3 – whilst the material offers good overall tensile strength, this strength decreases as the temperature rises.

Equivalents for this steel grade can be found under both the ASTM and ASME steel specifications for chrome moly (A387 and SA387 respectively).

Key benefits of 16Mo3 chrome moly steel

  • Excellent heat and corrosion resistance
  • Good welding properties
  • Good tensile and yield strength
  • Good fatigue and wear resistance
  • Toughness

16Mo3 is also extensively used by the inshore and offshore industry. Material of this type normally comes with mill certification and stamping and further testing is normally supplied on the customers request. This can be done by a third party testing house or independently inspected by the customer.

Source by John Winterton