ZG40Cr25Ni20Si2 feeding tube

ZG40Cr25Ni20Si2 feeding tubeIt is a high-performance alloy steel pipe that, with its excellent high-temperature strength, oxidation resistance, corrosion resistance, and mechanical properties, has become a core component in industries such as petroleum, chemical, power, metallurgy under high temperature, high pressure, and strong corrosion environments.

ZG40Cr25Ni20Si2 belongs to high alloy austenitic heat-resistant cast steel, and its composition design reflects the balance art of high-temperature alloys:

25% chromium (Cr): forms a dense Cr ₂ O ∝ oxide film, with an oxidation resistance temperature of 1150 ℃, and resists high-temperature oxidation and corrosion.

20% nickel (Ni): stabilizes the austenitic matrix, enhances high-temperature strength and resistance to carburization, and ensures the structural stability of the material at high temperatures.

0.4% carbon (C): forms a carbide strengthening phase with chromium, balancing casting fluidity and strength, and improving the wear resistance of the material.

2% silicon (Si): enhances high-temperature strength and creep resistance, refines grain size, and improves material toughness.

Performance data:

The persistent strength reaches 45MPa (1000 hours) at 950 ℃.

Excellent thermal fatigue resistance, maintaining 85% of initial strength even after 1000 cycles of cold and hot cycles.

At a high temperature of 1100 ℃, the strength attenuation rate is less than 15%, and the high-temperature yield strength remains at 85% of the room temperature value.

ZG40Cr25Ni20Si2 feeding tubeWith its comprehensive performance, it is widely used in the following scenarios:

Petrochemical industry:

Refinery catalytic cracking unit: capable of withstanding high-temperature hydrocarbon cracking environments, resisting sulfide corrosion, and ensuring long-term operation of the unit.

Chemical reactors and heat exchangers: Transport corrosive media such as acids, alkalis, etc. under high temperature and pressure to ensure equipment safety.

Power industry:

Boiler slag discharge pipe: In thermal power plants, it can withstand high-speed erosion and high-temperature corrosion of coal slag, reducing the risk of blockage and leakage.

Gas turbine components: used to manufacture turbine blades and combustion chamber components, improving engine efficiency and lifespan.

Metallurgical industry:

Heating furnace and walking beam: As components such as furnace rollers and radiation tubes, they can withstand rapid cooling and heating cycles at 1300 ℃, with a lifespan four times that of ordinary materials.

Continuous casting machine crystallizer: resistant to steel erosion and mechanical vibration, ensuring the quality of castings.

In the field of environmental protection:

Garbage incinerator grate: operates stably in high-temperature exhaust gas and corrosive media, extending the service life of equipment.

Flue gas desulfurization equipment pipeline: resistant to high temperature sulfide erosion, ensuring efficient operation of the environmental protection system.