Haynes HR-160 alloy,UNS N12160, ASTM B435, ASTM B366, DIN No.2.4880，1

### **Haynes HR-160® Alloy (UNS N12160) - High-Temperature Corrosion-Resistant Nickel-Based Alloy** #### **Overview** **Haynes HR-160® Alloy** is a revolutionary nickel-cobalt-chromium-silicon alloy specifically engineered to withstand extreme high-temperature environments where sulfidation, carburization, and other forms of high-temperature corrosion are prevalent. Unlike conventional nickel-chromium alloys, HR-160 incorporates a high silicon content (2.75%) that forms a protective silica-rich scale, providing exceptional resistance to attack from sulfur-containing atmospheres up to 2200°F (1204°C). This unique composition makes it particularly suitable for aggressive industrial applications where other high-performance alloys fail. --- #### **Chemical Composition (Weight %)** | Element | Content (%) | Function | |---------|-------------|-----------| | **Nickel (Ni)** | **Balance** | **Base element providing matrix stability** | | **Cobalt (Co)** | **29.0** | **Solid solution strengthening and carburization resistance** | | **Chromium (Cr)** | **28.0** | **Oxidation and sulfidation resistance through Cr₂O₃ scale** | | **Silicon (Si)** | **2.75** | **Forms protective SiO₂ scale for enhanced corrosion resistance** | | **Molybdenum (Mo)** | **-** | **Tungsten (W)** | **-** | **Iron (Fe)** | **≤ 0.50** | **Controlled impurity** | | **Carbon (C)** | **0.05** | **Strength enhancement at elevated temperatures** | | **Manganese (Mn)** | **0.50** | **Sulfur control and deoxidation** | | **Other Elements** | **≤ 0.50** | **Total other impurities** | --- #### **Physical & Mechanical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | **8.22 g/cm³ (0.297 lb/in³)** | | **Melting Range** | **1290-1365°C (2350-2490°F)** | | **Electrical Resistivity** | **1.18 μΩ·m** | | **Thermal Conductivity** | **12.0 W/m·K (at 100°C)** | | **Coefficient of Thermal Expansion** | **14.2 μm/m·°C (20-1000°C)** | | **Specific Heat Capacity** | **460 J/kg·K** | | **Tensile Strength (Room Temp)** | **690 MPa (100 ksi)** | | **Yield Strength (0.2% Offset)** | **310 MPa (45 ksi)** | | **Elongation** | **45%** | | **Modulus of Elasticity** | **212 GPa (30.7 × 10⁶ psi)** | | **Creep Rupture Strength** | **Excellent up to 1204°C (2200°F)** | --- #### **High-Temperature Corrosion Resistance** | Environment | Performance | Maximum Temperature | |-------------|-------------|---------------------| | **Sulfidizing Atmospheres** | **Excellent** | **1204°C (2200°F)** | | **Oxidizing Atmospheres** | **Excellent** | **1204°C (2200°F)** | | **Carburizing Environments** | **Excellent** | **1150°C (2100°F)** | | **Chlorine-Containing Gases** | **Good** | **980°C (1800°F)** | | **Molten Salts** | **Good** | **Varies with salt composition** | --- #### **Key Characteristics & Applications** **Key Characteristics:** - **Exceptional Sulfidation Resistance**: Superior performance in sulfur-rich environments - **Excellent Carburization Resistance**: Maintains integrity in carbon-rich atmospheres - **Good Oxidation Resistance**: Protective chromia-silica scale formation - **High-Temperature Strength**: Good creep and rupture properties - **Phase Stability**: Resists formation of detrimental secondary phases - **Good Fabricability**: Can be welded and formed using standard methods **Typical Applications:** - **Heat Treatment Industry**: Furnace rolls, radiant tubes, retorts, and fixtures - **Chemical Processing**: Reformers, crackers, and high-temperature reactors - **Power Generation**: Boiler components, superheater supports - **Petrochemical**: Pyrolysis tubes, transfer lines in refining - **Pulp and Paper**: Recovery boiler and black liquor gasifier components - **Waste Incineration**: Heat exchangers and superheater tubes - **Mineral Processing**: Roasting and calcining equipment --- #### **International Standards & Specifications** | Standard | Designation | Description | |----------|-------------|-------------| | **ASTM** | **B435** | Plate, sheet, and strip | | **ASTM** | **B366** | Factory-made wrought fittings | | **ASTM** | **B619** | Welded pipe and tube | | **UNS** | **N12160** | Unified Numbering System | | **DIN** | **2.4880** | German standard designation | | **ASME** | **Code Case** | **Acceptance for pressure vessel applications** | --- #### **Manufacturing & Processing** **Available Forms:** - **Plate and Sheet**: 3 mm to 100 mm thickness - **Bar and Rod**: 10 mm to 300 mm diameter - **Pipe and Tube**: 10 mm to 600 mm OD - **Wire and Electrode**: For welding applications - **Forgings and Fittings**: Custom components **Processing Guidelines:** - **Hot Working**: 1150-1200°C (2100-2190°F) - **Cold Working**: Good capability with intermediate annealing - **Solution Annealing**: 1175-1200°C (2150-2190°F) with rapid cooling - **Welding**: All standard methods with matching filler metals - **Machining**: Similar to other nickel-based superalloys --- #### **Quality Control & Testing** - **Chemical Analysis**: Per ASTM E1473 - **Mechanical Testing**: Per ASTM E8/E8M - **Corrosion Testing**: Per ASTM G28 and G48 methods - **Non-Destructive Examination**: UT, RT, PT as required - **Metallurgical Quality**: Microstructure examination per ASTM E112 --- #### **Comparison with Competitive Alloys** | Property | HR-160 | Alloy 800H | 310 Stainless | 253MA | |----------|---------|------------|---------------|--------| | **Max Sulfidation Temp** | **1204°C** | 870°C | 980°C | 1050°C | | **Carburization Resistance** | **Excellent** | Good | Fair | Good | | **Cost Effectiveness** | **High** | Medium | Low | Medium | | **Fabricability** | **Good** | Excellent | Excellent | Good | --- #### **Summary** **Haynes HR-160® Alloy (UNS N12160)** represents a significant advancement in high-temperature corrosion-resistant materials, specifically designed to combat the combined effects of sulfidation, oxidation, and carburization in aggressive industrial environments. Its unique composition, featuring high silicon content combined with substantial chromium and cobalt levels, provides unparalleled protection in sulfur-rich atmospheres where conventional alloys rapidly degrade. The alloy's comprehensive standardization across major international specifications, including ASTM B435 and B366, ensures consistent quality and reliable performance. While requiring specialized processing techniques typical of nickel-based superalloys, HR-160's exceptional high-temperature capabilities and proven service performance make it the material of choice for the most demanding industrial heating, chemical processing, and energy applications where long-term reliability in corrosive environments is paramount.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3239 gallon liquid totes Special package is available on request.