AMS 5553J specification covers Alloy 201 (UNS N02201) nickel in the form of sheet and strip from 0.001 to 0.250 inch (0.03 to 0.65 mm) in nominal thickness. Alloy 201 is the low-carbon version of commercially pure nickel (Alloy 200), specifically formulated with a maximum carbon content of 0.02% to prevent embrittlement and graphitization during exposure to temperatures above 315°C (600°F). These products have been used typically for parts requiring excellent corrosion resistance and/or strong magnetic properties, but usage is not limited to such applications .
1. Product Specifications & Physical DataAlloy 201 is available in thin sheet and strip forms for precision components requiring excellent corrosion resistance, magnetic properties, and high-temperature stability. Available Forms: Sheet, strip, foil (0.03-0.65mm thickness) Specifications: AMS 5553J, ASTM B162, ASME SB-162, UNS N02201
| Chemical Composition (Weight %) | Alloy 201 Specification |
|---|
| Nickel (Ni) | 99.0 min. | | Iron (Fe) | 0.40 max. | | Manganese (Mn) | 0.35 max. | | Silicon (Si) | 0.35 max. | | Copper (Cu) | 0.25 max. | | Carbon (C) | 0.02 max. | | Sulfur (S) | 0.010 max. |
| Physical Properties | Metric | Imperial |
|---|
| Density | 8.89 g/cm³ | 0.321 lb/in³ | | Melting Point | 1435 - 1446°C | 2615 - 2635°F | | Curie Temperature | 358 - 365°C | 676 - 689°F | | Modulus of Elasticity | 204 GPa | 29.6 × 10⁶ psi | | Thermal Conductivity (RT) | 70 W/m·K | 486 BTU·in/hr·ft²·°F | | Electrical Resistivity | 9.5 µΩ·cm | 9.5 µΩ·cm |
| Mechanical Properties (Annealed Sheet/Strip) | Metric | Imperial |
|---|
| Tensile Strength (min.) | 345 MPa | 50 ksi | | Yield Strength (0.2% offset, min.) | 105 MPa | 15 ksi | | Elongation (min.) | 40% | 40% | | Hardness (Rockwell B) | 45 max. | 45 max. |
2. Fabrication & Material ComparisonAnnealing: 704-871°C (1300-1600°F) × 10-30 minutes, air cool; relieves cold work stresses and restores softness Stress Relieving: 482-538°C (900-1000°F) × 1-2 hours, air cool Cold Working: Excellent formability in annealed condition; work-hardening rate moderate Machining: Similar to soft steel with higher work-hardening rate; requires sharp tools, positive feeds, and heavy-duty lubricants Welding: Excellent weldability using GTAW, GMAW, and resistance welding; matching filler metal (ERNi-1) recommended; surface must be clean and free of contaminants
3. ApplicationsChemical Processing: Caustic evaporators, storage tanks, piping systems for sodium hydroxide and potassium hydroxide at elevated temperatures; reactor vessels for organic processes; handling equipment for fatty acids and phenols Electronics: Magnetic components, transformer cores, magnetic shields, electromagnetic actuators, recording heads Aerospace & Defense: Rocket motor components, missile guidance systems, electronic shielding Food & Pharmaceutical: Equipment requiring product purity at elevated temperatures; processing vessels; cleaning system components Industrial Manufacturing: Thermocouple sheaths, high-temperature fixtures, combustion boats Battery Components: Electrode substrates, current collectors for alkaline batteries
Contact ZYTC Alloy for certified AMS 5553J Alloy 201 sheet and strip with complete traceability, certificates, and competitive pricing. Available in thicknesses from 0.03 to 0.65 mm for precision magnetic and corrosion-resistant components. Email: daisy@zytcsteel.com WhatsApp/WeChat: +86 17335753350 |
