Nickel 84/Molybdenum 16 Alloy,Nickel Molybdenum Alloy.Ni16Mo Alloy，1

### **Nickel 84/Molybdenum 16 Alloy (Ni₈₄Mo₁₆) - High-Performance Corrosion-Resistant Alloy** #### **Overview** **Nickel 84/Molybdenum 16 Alloy** is a premium nickel-molybdenum alloy engineered to deliver exceptional corrosion resistance in demanding chemical processing environments. With its optimized composition of approximately 84% nickel and 16% molybdenum, this alloy offers an excellent balance of corrosion resistance, mechanical strength, and fabricability. The substantial molybdenum content provides outstanding resistance to reducing media while maintaining good performance across a wide range of aggressive chemical environments. --- #### **Chemical Composition (Weight %)** | Element | Content (%) | Function | |---------|-------------|-----------| | **Nickel (Ni)** | **82.0-86.0%** | Base element providing fundamental corrosion resistance | | **Molybdenum (Mo)** | **15.0-17.0%** | Key alloying element for resistance to reducing acids | | **Iron (Fe)** | **≤ 2.0%** | Controlled impurity | | **Chromium (Cr)** | **≤ 1.0%** | Limited addition for specific corrosion applications | | **Manganese (Mn)** | **≤ 0.8%** | Deoxidizer and sulfur control | | **Silicon (Si)** | **≤ 0.5%** | Controlled impurity | | **Carbon (C)** | **≤ 0.03%** | Strictly controlled to prevent carbide formation | | **Sulfur (S)** | **≤ 0.015%** | Minimized impurity | --- #### **Physical & Mechanical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | **9.05 g/cm³** | | **Melting Point** | **1370-1420°C** (2498-2588°F) | | **Electrical Resistivity** | **90-100 μΩ·cm** (at 20°C) | | **Thermal Conductivity** | **15-20 W/m·K** (at 20°C) | | **Coefficient of Thermal Expansion** | **12.5-13.5 × 10⁻⁶/°C** (20-400°C) | | **Specific Heat Capacity** | **400-450 J/kg·K** | | **Tensile Strength** | **620-750 MPa** (annealed condition) | | **Yield Strength (0.2% Offset)** | **280-380 MPa** (annealed condition) | | **Elongation** | **40-55%** (annealed condition) | | **Modulus of Elasticity** | **195-210 GPa** | | **Hardness** | **160-200 HV** (annealed condition) | | **Creep Strength** | **Good up to 750°C** (1382°F) | --- #### **Corrosion Resistance Performance** | Environment | Performance Rating | |-------------|-------------------| | **Hydrochloric Acid** | **Excellent up to boiling temperatures** | | **Sulfuric Acid** | **Outstanding in concentrations below 70%** | | **Phosphoric Acid** | **Excellent across all concentrations** | | **Organic Acids** | **Superior resistance to acetic, formic acids** | | **Alkaline Solutions** | **Good resistance to caustic environments** | | **Chloride Media** | **Excellent resistance to pitting and crevice corrosion** | | **Oxidizing Conditions** | **Moderate resistance, requires evaluation** | --- #### **Key Characteristics & Applications** **Key Characteristics:** - **Superior Acid Resistance**: Exceptional performance in reducing acid environments - **Excellent Mechanical Properties**: Balanced strength and ductility - **Good Thermal Stability**: Maintains integrity at elevated temperatures - **Excellent Fabricability**: Readily welded, formed, and machined - **Cost-Effective Solution**: Optimal performance-to-cost ratio - **Versatile Performance**: Suitable for diverse chemical environments **Typical Applications:** - **Chemical Processing Equipment**: Reactors, vessels, and columns for acid service - **Pharmaceutical Manufacturing**: Reaction vessels and purification systems - **Acid Production Plants**: Equipment for hydrochloric and sulfuric acid handling - **Petrochemical Industry**: Components in refining and processing units - **Pollution Control Systems**: Scrubbers and waste treatment equipment - **Heat Exchangers**: Tubes and plates for corrosive media - **Laboratory and Analytical Equipment**: Chemical apparatus and instruments --- #### **International Standards & Specifications** | Standard | Designation | Description | |----------|-------------|-------------| | **ASTM** | **B619** | Welded nickel and nickel-cobalt alloy pipe | | **ASTM** | **B622** | Seamless nickel and nickel-cobalt alloy pipe and tube | | **ASTM** | **B626** | Welded nickel alloy tube | | **UNS** | **N10629** | Unified Numbering System designation | | **ASME** | **SB-619** | Boiler and Pressure Vessel Code specification | | **DIN** | **2.4610** | German standard designation | | **ISO** | **9724** | Nickel-molybdenum alloy ingots for remelting | --- #### **Manufacturing & Processing** **Available Forms:** - **Plate and Sheet**: 0.8 mm to 150 mm thickness - **Rod and Bar**: 5 mm to 350 mm diameter - **Pipe and Tube**: 10 mm to 600 mm OD - **Wire and Electrode**: 1.0 mm to 8.0 mm diameter - **Forgings and Fittings**: Custom components and pipe fittings **Processing Guidelines:** - **Hot Working Temperature**: 1150-1200°C (2102-2192°F) - **Cold Working**: Excellent capability with intermediate annealing - **Solution Annealing**: 1120-1170°C (2048-2138°F) with rapid cooling - **Welding Compatibility**: All standard methods with proper procedures - **Machinability**: Similar to other nickel alloys, requires appropriate tools --- #### **Quality Control & Testing** - **Chemical Composition**: Verified per ASTM E1473 - **Mechanical Properties**: Tested per ASTM E8/E8M standards - **Corrosion Testing**: Evaluated per ASTM G28 and G48 methods - **Non-Destructive Examination**: UT, RT, PT as required by application - **Metallurgical Quality**: Microstructure examination per ASTM E112 --- #### **Comparison with Related Alloys** | Property | Ni₈₄Mo₁₆ | Ni₈₀Mo₂₀ | Ni₇₀Mo₂₄Fe₆ (Hastelloy B-type) | |----------|-----------|-----------|-------------------------------| | **Molybdenum Content** | 15-17% | 19-21% | 24-27% | | **Corrosion Resistance** | Very Good | Excellent | Superior | | **Mechanical Strength** | Balanced | Higher | Highest | | **Cost Effectiveness** | Excellent | Good | Moderate | --- #### **Summary** **Nickel 84/Molybdenum 16 Alloy** represents an optimally balanced material in the nickel-molybdenum alloy series, offering an exceptional combination of corrosion resistance, mechanical properties, and economic viability. Its robust performance in reducing acid environments, coupled with excellent fabricability and proven service reliability, makes it a preferred choice for chemical processing, pharmaceutical, and industrial applications. The alloy's well-established manufacturing protocols and comprehensive international standardization ensure consistent quality and performance, while its competitive cost position makes it an attractive alternative to higher-alloyed materials where ultimate corrosion resistance is not required. Ni₈₄Mo₁₆ continues to serve as a workhorse material in industries demanding reliable performance in aggressive chemical environments.

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 3230 gallon liquid totes Special package is available on request.