Nippon Yakin Kogyo Co., Ltd
Nippon Yakin Kogyo NASNi201 Corrosion Resistant Pure Nickel
Manufacturer: Nippon Yakin Kogyo Co., Ltd
Model : NASNi201
NASNi201 (UNS N02201)
High Corrosion Resistant Pure Nickel
Pure Nickel (NASNi201) offers excellent corrosion resistance against caustic soda, chlorine gas, etc. In particular, it is used as a material for caustic soda manufacturing equipment by diaphragm electrolysis method. Nippon Yakin supplies this product in plate, sheet, and strip form.
| Chemical Composition | 99Ni | ||
| Product shape |
|
 Sheet |
|
| Workability | Because the work hardenability of Pure Nickel is low, it is suitable for severe cold working by methods such as spinning and coining. | ||
| Weldability | Possible welding methods include shielded metal arc welding, TIG, MIG, and resistance welding. ENi-1 welding consumable should be used for TIG and MIG welding. | ||
Coil
Plate
Grade/Standard
| Nippon Yakin Grade | JIS G 4902 | ASTM B162 | EN |
|---|---|---|---|
| NASNi201 | NW2201 | UNS N02201 | 2.4068 |
Chemical Composition
| Specification | C | Si | Mn | S | Ni | Fe | Cu |
|---|---|---|---|---|---|---|---|
| Specification (NW2201) | ≦0.020 | ≦0.35 | ≦0.35 | ≦0.010 | ≧99.00 | ≦0.40 | ≦0.25 |
| Specification (UNS N02201) | ≦0.02 | ≦0.35 | ≦0.35 | ≦0.01 | ≧99.00 | ≦0.40 | ≦0.25 |
| Density | [g/cm³] | 8.88 |
|---|---|---|
| Specific heat | [J/kg·K] | 456 |
| Electrical resistivity | [µΩ·cm] | 9.2 |
| Thermal conductivity | [W/m·K] | 72.7 |
| Average coefficient of thermal expansion | [10⁻⁶/°C] | 25~100°C: 12.9 25~200°C: 13.6 25~300°C: 14.2 |
| Young’s modulus | [MPa] | 21.1 × 10⁴ |
| Melting range | [°C] | 1433~1444 |
Mechanical Properties
Mechanical Properties at Room Temperature
| Thickness [mm] | Tensile strength [MPa] | 0.2% Proof stress [MPa] | Elongation [%] | |
|---|---|---|---|---|
| Specification (NW2201) Annealed | ≦1.2 | ≧345 | ≧80 | ≧30 |
| Specification (NW2201) Annealed | ≦1.2~2.7 | ≧345 | ≧80 | ≧35 |
| Specification (NW2201) Annealed | ≧2.7 | ≧345 | ≧80 | ≧40 |
| Specification (UNS N02201) [Cold-Rolled Sheet] | — | ≧345 | ≧80 | ≧40 |
| Example: Cold-rolled sheet | 0.6 | 415 | 231 | 43 |
Corrosion Resistance
Alkali Resistance
| Alloy | Corrosion rate in boiling sodium hydroxide solution (mm/y) | 20% | 40% | 60% |
|---|---|---|---|---|
| SUS304 | — | 0.01 | 2.77 | 13.30 |
| NAS64 | — | <0.01 | 0.51 | 5.79 |
| NAS185N | — | <0.01 | 0.51 | 2.36 |
| NASNW22 | — | <0.01 | 0.03 | 0.06 |
| NASNi201 | — | <0.01 | 0.02 | 0.03 |
Test time: 24h
Acid Resistance
| Alloy | 5% | 10% | 20% | 40% | 60% | 80% |
|---|---|---|---|---|---|---|
| SUS304 | 1.93 | 14.59 | 195.2 | 1347 | 231.8 | 151.4 |
| NAS64 | <0.01 | 0.02 | 1.07 | 191.9 | 1054 | 60.72 |
| NAS185N | 0.02 | 0.04 | 1.32 | 2.89 | 3.20 | 4.78 |
| NASNW22 | 0.01 | 0.02 | 0.02 | 0.04 | 0.47 | 0.34 |
| NASNi201 | 1.01 | 1.15 | 1.86 | 3.83 | 13.70 | 0.79 |
Test time: 24h
| Alloy | 0.10% | 1% | 2% | 3% |
| SUS304 | 0.02 | 2.42 | 7.16 | 18.99 |
| NAS64 | 0.01 | 12.94 | 30.51 | |
| NAS185N | 0.02 | 4.2 | 7.21 | |
| NASNW22 | 0.03 | 0.02 | 0.04 | |
| NASNi201 | 0.99 | 7.28 | 13.38 | 15.91 |
Test time: 24h
| Alloy | JIS | UNS No. | Chemical Composition |
|---|---|---|---|
| SUS304 | SUS304 | S30400 | 18Cr-8Ni |
| NAS64 | S32506 | S32506 | 25Cr-6.5Ni-3.3Mo-0.17N |
| NAS185N | SUS312L | S31254 | 20Cr-18Ni-6Mo-0.8Cu-0.2N |
| NASNW22 | NW6022 | N06022 | 57Ni-21Cr-14Mo-3W-4Fe |
| NASNi201 | NW2201 | N02201 | 99Ni |
Workability
Because the work hardenability of Pure Nickel is low, it is suitable for severe cold working by methods such as spinning and coining.
Weldability
Possible welding methods include shielded metal arc welding, TIG, MIG, and resistance welding. ENi-1 welding consumable should be used for TIG and MIG welding.
Heat Treatment
Heat treatment of NASNi201 is normally performed at the temperature range from 760 to 1050°C, followed by being quenched in water or rapidly cooled by other means.
Pickling
It should be noted that descaling of NASNi201 is somewhat difficult in comparison with Type 304.
Applications
- Caustic soda manufacturing plant
- Terminal applications
- Coins
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