Special Alloys

Oxide officially represents the company "Duraloy". Duraloy manufactures alloys resistant to high temperatures and corrosion. Some materials are proprietary and protected by patent.

The company manufactures the following heat-resistant alloys: HN, HL, HK, HI, HH, HF, HE, HD, HC, HP, HT, HU, HW, HX. All these alloys result from additions of 21%-30% chromium and 4%-66% nickel. The temperature range spans 871-1149°C.

The company manufactures the following corrosion-resistant alloys: CF-8, CF-3, CD-30, CA-6NM, CA-40, CA15, CH-20, CG-8M, CF-8C, CF-8M, CF-3M, CK-20, CZ-100, Alloy 625. Of these, 3 are martensitic (410, 420, 442) and the rest austenitic (304, 304L, 316, 316L, 347, 317). Alloy 625 contains 21.5% chromium, 60% nickel, 9% molybdenum, and niobium residuals.

Alloys developed and owned by the company:

• MO-RE1: Composition: 0.45% carbon, 25% chromium, 35% nickel, 1% tungsten — intended for temperatures between 1093–1149 °C.
• MO-RE2: Alloy composition: 0.2% carbon, 33% chromium, 50% nickel, and 17% tungsten + aluminum. Temperature range up to 1315 °C.
• SUPERTHERM: Contains 0.45% carbon, 25% chromium, 35% nickel, 15% cobalt, and 5% tungsten; suitable up to 1260 °C.
• TMA 4700: Contains 0.40% carbon, 25% chromium, 20% nickel, 15% cobalt, with trace micro-additions of niobium, tungsten, and titanium. Essentially an improved HK grade; good creep resistance.
• TMA 4701: Chemical composition not disclosed. Further improvement over HK with better creep at high temperatures; especially suited to reformer furnaces (furnaces that change the state of the material).
• Nickel Aluminides: Composition confidential. Nickel–aluminide alloy developed in "Orkidzh" laboratories and licensed to "Duraloy"; especially suited to rolls in furnaces for thermal treatment involving carburization.
• MO-RE 9: Contains 0.09% carbon, 25% chromium, 35% nickel, and 1.2% niobium. Essentially improved HP with niobium. Suited to parts outside the furnace, especially parts that require drawing after welding.
• MO-RE 10: Contains 0.40% carbon, 25% chromium, 35% nickel, and 1.2% niobium + additions of titanium and rare earths — a further improvement over HP.
• MO-RE 10MA: Contains 0.45% carbon, 25% chromium, 35% nickel, and 1.2% niobium, with micro-additions of zirconium and titanium. Good up to 1079 °C; especially suited to ethylene furnaces by pyrolysis.
• TMA 6300: Contains 0.40% carbon, 25% chromium, 35% nickel, and 1.2% niobium, with micro-additions of titanium and rare earths. Suitable up to 1066 °C; especially for reformer furnaces.
• TMA 6301: Composition confidential. Base iron–nickel–chromium with rare earths. Further HP improvement for creep resistance at high temperatures; especially for reformer furnaces.
• MO-RE21: Contains 0.1% carbon, 20% chromium, 32% nickel, and 1.2% niobium. Furnace tubing suits thermal fatigue and thermal shock. As a casting, similar in properties to 800HT.
• MO-RE32MA: Contains 0.45% carbon, 28% chromium, 36% nickel, with micro-additions of aluminum and rare earths. Especially suited to furnaces with thermal treatment.
• 22H: Contains 0.45% carbon, 30% chromium, 50% nickel, and 4% tungsten. Austenitic; good up to 1204 °C.
• Super 22H: Contains 0.45% carbon, 28% chromium, 48% nickel, 5% tungsten, and 3% cobalt. Suitable for temperatures between 1066–1200 °C.
• 50-50cb: Contains 0.1% carbon, 48% chromium, 50% nickel, and 1.5% niobium.
• MO-RE 40: Contains 0.45% carbon, 34% chromium, 45% nickel, and 1.3% niobium. Especially good against tube coking and oxidation. Good up to 1149 °C.
• MO-RE40MA: Contains 0.45% carbon, 34% chromium, 45% nickel, 1% niobium, with micro-additions of titanium and rare earths. Especially good against tube coking and oxidation. Good up to 1149 °C.
• MO-RE 2150: A family of alloys containing chromium, nickel, and cobalt (not disclosed due to confidentiality).
• MO-RE 100: Belongs to a family of alloys related to the development of future high-temperature grades.