Alloy 201 / 2.4068
Alloy 201 has excellent resistance to many corrosive media from acid to alkaline and is corrosion resistant. Alloy 201 offers good mechanical properties within a wide range of temperatures as well as magnetic and magnetostrictive properties and useful thermal and electrical conductivities.
Material Data Sheet
| Material Designation | 2.4066/2.4068 |
|---|---|
| Alloy | Alloy 201 |
| EN Material Symbol | - |
| UNS | N 02201 |
| Trademark | Nickel 99.2 / LC Nickel 99.2 |
| VdTÜV Data Sheet | 345 |
Main fields of application of Alloy 201
Alloy 201 is commonly used in food industry, but it is also in used vessels up to 600°C and sodium hydroxide evaporators up to 450°C. Alloy 201 is also often used in vessels for production of flour, hydrochloric acid or vinylchloride monomer.
Chemical composition of Alloy 201
| Ni % | C % | Si % | Mn % | Fe % | S % | Ti % | Cu % | Mg % |
|---|---|---|---|---|---|---|---|---|
| 99,00 | 0,02 | 0,2 | 0,35 | 0,04 | 0,01 | 0,1 | 0,25 | 0,15 |
Characteristics of Alloy 201
| Temperature Range | Material for wet corrosion |
|---|---|
| Density | 8,9 g/cm³ |
| Melting Range | 1435-1445 °C |
Filler metal (for welding with 2.4066/2.4068)
2.4155, 2.4620, 2.4806,
covered electrodes 2.4156
Hot forming
The material is hot formed within a temperature range of 900 and 1200 ° C and afterwards quenched rapidly in water or air. Hot bending is carried out at 1000 to 1150 ° C.
The annealing takes place at 1200 ° C.
Holding time about 60 min. / 100 mm thickness.
After hot forming, heat treatment for optimum creep strength is recommended.
Cold forming
The material has a higher work-hardening rate than austenitic stainless steels. The workpiece should be available in the annealed condition. For strong cold forming intermediate annealing is necessary.
For more than 10% deformation, annealing should be performed.
Heat treatment
The solution annealing is carried out at 1150 ° C. It should be cooled quickly under water.
With thicknesses less than about 1.5 mm rapid air cooling can be done.
Mechanical properties of 1.4876 / 1.4958
The following properties at room and elevated temperatures are in annealed condition and in accordance with the VdTÜV-Blatt. Varying values may be found in literature (e.g. VdTÜV sheet).
At RT Yield: 170N/mm²
Tensile: 450-700N/mm²
Creep rupture strength of 100.000h value (included VdTÜV safty value 1,5)
| 800h | 800ht/hp | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| According to | VdTÜV 412 | VdTÜV 412 | VdTüv 434 | VdTüv 434 | ASME UNS N08810 | ASME UNS N08810 | ASME UNS N08811 | ASME UNS N08811 | |
| (Al+ti)% | <=0,7 or 1,0 | <=0,7 or 1,0 | <=0,7 | <=0,7 | <=1,0 | <=1,0 | <=1,2 | <=1,2 | |
| t°C | T°F | N/mm² | ksi | N/mm² | ksi | N/mm² | ksi | N/mm² | ksi |
| 593 | 1100 | 11,5 | 11,5 | 80 | 11.5 | 89 | 13 | ||
| 600 | 1112 | 76 | 11 | 76 | 11 | 76 | 84 | ||
| 648 | 1200 | 7 | 7,5 | 7.5 | 8.5 | ||||
| 650 | 1202 | 49 | 7 | 51 | 7.5 | 50 | 56 | ||
| 700 | 1292 | 31 | 4.5 | 35 | 5 | 33 | 38 | ||
| 704 | 1300 | 4.5 | 5 | 32 | 5 | 37 | 5.5 | ||
| 750 | 1382 | 20 | 3 | 24 | 3.5 | 22 | 24 | ||
| 760 | 1400 | 2.5 | 3 | 3 | 3.5 | ||||
| 800 | 1472 | 13 | 1.8 | 16 | 2.2 | 15 | 17 | ||
| 815 | 1500 | 1.5 | 2 | 13 | 1.9 | 15.2 | 2.2 | ||
| 850 | 1562 | 7 | 1 | 10 | 1.6 | 10 | 11.7 | ||
| 871 | 1600 | 0.7 | 1.3 | 8 | 1.2 | 10 | 1.5 | ||
| 898 | 1650 | 0.4 | 1 | 7 | 1 | 7.5 | 1.1 | ||
| 900 | 1652 | 2,7 | 0.4 | 7 | 1 | 7 | 7.5 | ||
| 926 | 1700 | 0.8 | 5 | 0.7 | |||||
| 950 | 1742 | 5 | 0.7 | 4.5 | |||||
| 953 | 1750 | 0,6 | 4.5 | 0.6 | |||||
| 981 | 1800 | 0,5 | 3.5 | 0.5 | |||||
| 1000 | 1832 |
Filler metal (for welding with alloy 800H)
he following fillers are recommended:
FM 82
Werkstoff-Nr. 2.4806
SG/UP-NiCr20Nb
AWS A5.14 ERNiCr-3
Covered electrode
Werkstoff-Nr. 2.4648
EL-NiCr19Nb
AWS A5.11 ENiCrFe–3 mod.