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Material Analysis
ZG40Cr28Ni48W5Si2 is a high-chromium-nickel-tungsten-silicon heat-resistant alloy cast steel. Its high chromium content forms a protective oxide film for corrosion resistance. The high nickel content ensures excellent high-temperature stability and thermal fatigue resistance. Tungsten and silicon additions enhance creep strength through solid solution strengthening.
This material offers good fluidity for casting complex shapes accurately. It produces dimensionally stable profiled castings with clear contours.
The castings maintain high strength and microstructural stability in extreme heat. They reliably serve in furnace rolls, radiant tubes, and fixtures.
These components withstand complex thermomechanical stresses without deforming or cracking. They also resist surface oxidation and spalling effectively.
Using this material combines excellent castability with superior high-temperature durability. It enables complex-shaped parts that last longer in thermal applications.
This reduces maintenance downtime and improves overall equipment efficiency. The result is more reliable and economical high-temperature operations.
Material Advantages
Exceptional High-Temperature Oxidation and Corrosion Resistance
The high chromium content (approximately 28%) promotes the formation of a dense chromium oxide layer on the surface. This layer acts as an effective barrier against oxygen and corrosive media, ensuring prolonged service life in high-temperature oxidizing and corrosive atmospheres.
Outstanding Thermal Fatigue Resistance
The very high nickel content (approximately 48%) stabilizes the austenitic matrix structure. This structure provides high strength and toughness at elevated temperatures, enabling the casting to withstand repeated heating and cooling cycles without cracking or failure due to thermal stress.
Excellent Castability and Formability
The alloy composition ensures favorable molten metal flow characteristics, allowing complete filling of intricate mold cavities. This is crucial for producing dimensionally accurate, sharply defined profiled castings, ensuring the feasibility of complex designs.
Superior High-Temperature Strength and Creep Resistance
Tungsten and silicon significantly strengthen the alloy matrix through solid solution strengthening. This greatly enhances the material's creep resistance under long-term high-temperature loads, allowing the casting to maintain dimensional stability and resist deformation at elevated temperatures.
Product Showcase
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