High-performance alloy material for industrial engineering and critical application conditions.
Scope of supply for Aviation Group
Forgings, round rods, steel plates, rings, seamless pipes, steel plates/steel belts, capillaries, wire welding materials, welcome to inquire!
1. Introduction to Alloy20 materials
Alloy20 is a nickel-iron-chromium alloy with outstanding overall corrosion resistance. It features excellent resistance to stress corrosion cracking and localized corrosion, stable performance under oxidizing and mild reducing conditions, and reliable anti-corrosion capability in a wide range of chemical composite media.
2. Chemical components
| alloy | % | nickel | chromium | iron | carbon | manganese | silicon | copper | molybdenum | aluminum | titanium | phosphorus | sulfur | Niobium (Nb) |
| Alloy20 | Minimum | 32.0 | 19.0 | Bal | – | – | – | 3.0 | 2.0 | – | 0.6 | – | – | 0.8 |
| maximum | 38.0 | 21.0 | 0.07 | 2.0 | 1.0 | 4.0 | 3.0 | 0.20 | 1.2 | 0.045 | 0.035 | 1.0 |
3. Physical properties
| density | 8.14 g/cm³ |
| Melting point | 1370-1400 ℃ |
| magnetism | Non-magnetic |
Minimum room-temperature mechanical properties of Alloy20:
| state | Tensile strength Rm N/mm² | Yield strength RP0.2 N/mm² | Elongation A5 % | Brinell hardness HB |
| Solid solution state | ≥550 | ≥240 | ≥30 | ≤220 |
4. Alloy 20 material characteristics
Alloy 20 (NS143) is solid-solution strengthened iron-nickel alloy containing chromium, nickel, molybdenum and copper, designed to resist mixed oxidizing-reducing corrosive media. It performs excellently in sulfuric acid, nitric acid and mixed acid environments, with its optimal performance in dilute sulfuric acid below 30% concentration. It delivers great resistance to stress corrosion cracking and localized corrosion, and adapts to harsh chemical media including aggressive inorganic acids, chlorine and chloride-containing media, dry chlorine gas, formic acid, acetic anhydride, seawater and brine.
5. Application areas
6. Extended application scenarios
Suitable for industrial environments with phosphoric acid, hydrochloric acid, sulfuric acid, chlorine, organic/inorganic chloride media, such as seawater desalination and petrochemical production equipment.
