1. What is 16Mo3 steel pipe made of?
16Mo3 is a low-alloy, heat-resistant steel pipe specified in the European standard (EN 10028-2). It is a molybdenum (Mo) alloy steel designed for high-temperature and high-pressure environments. The "16" in its name indicates an average carbon content of approximately 0.16%, and the "Mo3" represents a molybdenum content of approximately 0.25-0.35%. This material complies with German DIN standards (such as DIN 17155) and offers excellent high-temperature strength and oxidation resistance, making it widely used in equipment such as boilers and pressure vessels.
2. What are its core performance advantages?
High-temperature stability: It can operate for long periods below 500°C and withstand short-term temperatures up to 600°C.
Creep resistance: The molybdenum element effectively slows deformation at high temperatures.
Good weldability: It requires preheating to 150-250°C and post-weld heat treatment for stress relief.
3. What are its typical application scenarios? Primarily used in high-temperature, high-pressure industrial equipment, such as:
Superheaters and steam pipes in power plant boilers;
Cracking furnace tubes and heat exchangers in the petrochemical industry;
Pressure-bearing components in thermal systems.
4. How does it differ from ordinary carbon steel pipe (such as Q235)?
High-temperature performance: 16Mo3 boasts significantly higher strength at high temperatures than carbon steel.
Alloy cost: Due to the molybdenum content, it is more expensive, but also has a longer service life.
Standard differences: Carbon steel pipes are mostly used at room temperatures, while 16Mo3 must comply with specialized standards such as EN 10216.
5. Processing and usage precautions:
Heat treatment: Normalizing (900-960°C) is recommended to optimize the microstructure.
Corrosion protection: Hydrogen sulfide resistance measures are required for use in sulfur-containing media.
Standard compliance: When purchasing, confirm compliance with international standards such as EN 10028-2 or ASME SA335.
