16Mo3, it is a EN grade plate, used in the production of boilers or pressure vessels. This grade is equivalent to the domestic 12Cr1MoV. Widely used in petroleum, chemical, power station, boiler and other industries for the production of reactors, heat exchangers, separators, spherical tanks, oil and gas tank, liquefied gas tank, nuclear reactor reactor shell, boiler drum, liquefied petroleum gas cylinders, High pressure water pipes, water wheel volute and other equipment and components. But also the introduction of advanced equipment, such as: flame cutting machine, welding machine, hydraulic machine, etc., can cut and weld all kinds of cutting parts, structural frame, boiler cover, head, etc. Can cut the thickest 650mm steel, , 16Mo3 implementation of the standard En10028.
A EN steel plate for the production of boilers or pressure vessels.
Called: six six molybdenum three
Standard: EN10028 (European standard, foreign standard)
Named: is based on the C (carbon) and Mo (molybdenum) content to name, refers to the steel plate carbon content of 160 or so, while the molybdenum content of about three hundred.
Heat treatment: normalizing or normalizing + tempering
This brand is equivalent to the domestic 12Cr1MoV
16Mo3 welding and other materials are different, first to preheat, and after welding in the weld should be insulated for 30 minutes or so
16MO3 steel plate manganese is also an important alloy in the steel element, is also an important hardenable element, it has a great impact on the toughness of the weld metal.
16mo3 steel plate when the Mn content <0.05% when the weld metal toughness is high;
16mo3 steel plate when the Mn content> 3% and then very brittle;
16m3 steel plate when the Mn content = 0.6 ~ 1.8%, the weld metal has a high strength and toughness.
What is the effect of the sulfur (S) element on the weldability of the 16mo3 steel plate?
Sulfur in the steel often in the form of iron sulfide, and was distributed in the grain boundary, thus significantly reducing the toughness of steel. Iron and iron sulfide eutectic temperature is low (985 ℃), therefore, in the hot work, because the processing start temperature is generally 1150 ~ 1200 ℃, and iron and iron sulfide eutectic has melted, resulting in processing cracking, This phenomenon is the so-called "hot brittle sulfur." This property of sulfur causes hot cracking of the steel during welding. Therefore, the general content of sulfur in steel are strictly controlled. Ordinary carbon steel, high-quality carbon steel and high-quality steel is the main difference between the amount of sulfur, phosphorus content.