In the metallurgical industry, chromite is mainly used to produce ferrochrome alloys and metallic chromium. As a steel additive, ferrochrome alloy produces a variety of high-strength, corrosion-resistant, wear-resistant, high-temperature resistant, oxidation-resistant special steels such as stainless steel, acid-resistant steel, heat-resistant HIGH TEMPERATURE ALLOYS MATERIALS SELECTION HIGH TEMPERATURE ALLOYS Table 1 High-temperature alloys (in order of increasing performance) Material Temperature use limits Comments Carbon steel, such as ASTM A 387 Grade 22 649°C (1200°F) Above 510°C (950°F), 304H is stronger and more (2-1/4Cr, 1Mo) oxidation resistant.
for high-temperature service. The characteristics that make some of the stainless steels particularly useful in high-temperature environments are described, and typical engineering data are presented. Also discussed, but as a secondary consideration, are the corrosion-resistance qualities of stainless steels at elevated temperatures. High-Temperature Alloy Properties - Rolled Alloys, Inc.625 alloy is high creep-rupture strength, oxidation resistant to 1800°F (982°C). Excellent resistance to hot seawater, scrubber environments and reducing acids. 718 Metals & Alloys for High-Temperature Services 602A Alloy 602A is an austenitic heat resistant alloy that displays superior strength in the face of temperatures of up to 1200 degrees C, (2200 degrees F). In fact, its the single strongest and most oxidation resistant wrought alloy currently available for service above 1040 degrees C (1900 degrees F).
Many nickel-based alloys offer superior performances at temperatures above 1000°C, making them well suited for extremely harsh environments. These offer excellent oxidation resistance at high temperatures while maintaining quality weldability, workability, and ductility. Oxidation Resistance Prevent high temperature oxidation410 stainless steel. Recommended maximum service temperature for continuous exposure in air = 620°C (1150°F). Partially treated sample below was heated to 850°C for The high-temperature oxidation resistance properties of Jan 05, 2021 · Ca also improves the high-temperature oxidation resistance of Mg alloys [16,17,18,19,20]. Ca has a low density (1.55 g cm 3) and low cost and is therefore an attractive alloying element [21, 22]. Alloying with Ca in Mg alloys enhanced the oxidation resistance by the formation of a compact Ca-enriched surface oxide film [20, 23,24,25].
The next class of high-temperature alloys are the superalloys. Superalloys are alloys that sustain high-temperature strength and also possess strong oxidation resistance at high temperatures. Unlike austenitic stainless steels, which lose their strength above 750°C, superalloys retain strength until 1050°C, as illustrated in from Fig. 6.7.