Nickel 201 (N02201)
Ni 99.0 C 0.02 Cu 0.25 Fe 0.40 Mn 0.35 Si 0.35 S 0.01
Commercially pure wrought Nickel with similar properties to Alloy 200 but with a lower carbon content to prevent embrittlement by inter-granular carbon at elevated temperatures.
Characteristics
- Good resistance to corrosion in acids and alkalis and is most useful under reducing conditions.
- Outstanding resistance to caustic alkalis up to and including the molten state.
- In acid, alkaline and neutral salt solutions the material shows good resistance, but in oxidising salt solutions severe attack will occur.
- Resistant to all dry gases at room temperature and in dry chlorine and hydrogen chloride may be used in temperatures up to 550C.
- Resistance to mineral acids varies according to temperature and concentration and whether the solution is aerated or not. Corrosion resistance is better in de-aerated acid.
- Virtually immune to inter granular attack above 315C, chlorates must be kept to a minimum.
Applications
- Manufacture and handling of sodium hydroxide, particularly at temperature above 300C.
- Production of viscose rayon. Manufacture of soap.
- Analine hydrochloride production and in the chlorination of aliphatic hydrocarbons such as benzene, methane and ethane.
- Manufacture of vinyl chloride monomer.
- Reactors and vessels in which fluorine is generated and reacted with hydrocarbons.
Chemistry
Chemical Requirements |
|||||||
|---|---|---|---|---|---|---|---|
|
Ni |
Mn |
C |
Si |
Fe |
Cu |
S |
|
|
Max |
0.35 |
0.02 |
0.35 |
0.40 |
0.25 |
0.01 |
|
|
Min |
99.0 |
||||||
Physical Properties
| Density | 8.9 g/cm cube |
| Specific Heat | 440 J/kg K |
| Electrical Resistivity | 8.5 micro ohms cm |
| Curie Temperature | 358 C |
| Melting Range | 1435-1445 C |
| Thermal Expansion | (106K) 14.3 (20-300 C) |
Tensile Data
Mechanical Property Requirements |
|||||
|---|---|---|---|---|---|
|
Ultimate Tensile |
Yield Strength (0.2% OS) |
Elong. |
R/A |
Hardness |
|
|
Min |
50 KSi |
10 KSi |
40 |
||
|
Max |
|||||
|
Min |
345 MPa |
70 MPa |
|||
|
Max |
|||||
For hot-worked flats 5/16 in.(7.9mm) and under – the elongation shall be 25% min.
| MECHANICAL PROPERTIES | |
|---|---|
| Yield Strength | Rp 0.2% |
| 20 C Temp | 80 N/mm sq |
| 100 C | 70 N/mm sq |
| 200 C | 65 N/mm sq |
| 300 C | 60 N/mm sq |
| 400 C | 55 N/mm sq |
| Tensile Strength | RM |
| 45N/mm sq | |
| Elongation | A5 min |
| 40% | |
Nickel 201 can be hot formed to almost any shape. The temperature range 1200°F to 2250°F is recommended and should be carefully abided as the proper temperature is the most important factor in achieving hot malleability. Full information of the forming process should be sought and understood before proceeding.
Nickel 201 can be cold formed by all conventional methods, but because nickel alloys have greater stiffness than stainless steels more power is required to perform the operations.
Nickel 201 is the low carbon version of Nickel 200. It is preferred to Nickel 200 for applications involving exposure to temperatures above 600°F. With low base hardness and lower work-hardening rate, it is particularly suited for cold forming.
| High Temperature Mechanical Properties of Annealed Nickel 201 | ||||
|---|---|---|---|---|
| Temp.°F | Tensile Strength, PSI | Yield Strength, PSI | Elongation,% | Reduction of Area, % |
| Room | 58,500 | 15,000 | 50 | 73 |
| 200 | 56,100 | 15,400 | 45 | 74 |
| 400 | 54,000 | 14,800 | 44 | 72 |
| 600 | 52,500 | 15,300 | 42 | 72 |
| 800 | 41,200 | 13,500 | 58 | 80 |
| 1000 | 33,100 | 12,100 | 60 | 84 |
| 1200 | 22,200 | 10,200 | 74 | 90 |
| Nominal Mechanical Properties of Nickel 201 | |||||
|---|---|---|---|---|---|
| Form | Condition | Tensile Strength Kpsi |
Yield Strength (0.2% Offset) Kpsi |
Elongation in 2″ (%) |
Hardness |
| Rod and Bar | Hot Finished, Hot Finished and Annealed |
50-60 | 10-25 | 60-40 | 75-100 Brinell |
| Cold Drawn | 60-100 | 35-90 | 35-10 | 125-200 Brinell | |
| Cold Drawn and Annealed |
50-60 | 10-25 | 60-40 | 75-100 Brinell | |
| Plate | Hot Rolled | 50-70 | 12-25 | 60-35 | — |
| Hot Rolled and Annealed |
50-70 | 12-35 | 60-40 | — | |
| Tube and Pipe* | Cold Drawn Annealed |
50-70 | 10-28 | 60-40 | 62 Max Rockwell B |
| Stress Relieved | 60-105 | 30-85 | 35-15 | 70-95 Rockwell B |
|
* Seamless
Specifications
|
Form |
Standard |
|---|---|
|
Metal Type |
UNS N02201 |
|
Bar |
ASTM B160 Din 17752 BS 3076 |
|
Wire |
|
|
Sheet |
ASTM B162 Din 17750 BS 3072 |
|
Plate |
ASTM B162 Din 17750 BS 3072 |
|
Fitting |
B366 |
|
Forging |
ASTM B564 Din 17754 |
|
Weld Wire |
|
|
Weld Electrode
|
ENi-1
|
|
NA 12
|
All forms
|
|
Din |
2.4068 |
Machining
| MACHINING DATA | |
|---|---|
| Carbide tools are suggested for rates better than 50% of Type 304. |
|
| Machining Type | Suggested starting rates are: |
| Single Point turning : | Roughing – 0.15″ depth, 0.015″/rev feed -175 SFM Finishing – 0.025″ depth, 0.007″/rev feed – 200 SFM |
| Drilling : | 1/4″ Dia hole – 0.004″/rev feed – 60 SFM 1/2″ Dia hole – 0.007″/rev feed – 60 SFM 3/4″ Dia hole – 0.010″/rev feed – 60 SFM |
| Reaming : | Feed – same as drilling – 100 SFM |
| Side and Slot Milling : | Roughing – 0.25″ depth – 0.007″/tooth feed – 125SFM Finishing – 0.050″ depth – 0.009″/tooth feed – 140SFM |
| These rates are for carbide tools, Type C-2 for roughing, drilling and reaming. Type C-3 for finishing. |
|
| INTERNATIONAL STANDARDS | ||||||
|---|---|---|---|---|---|---|
| Country | Material | Pipe/Tube | Sheet/Plate | Bar/Rod | Fitting | Forging |
| USA ASTM | UNS N02201 | B161 | B162 | B160 | B366 | B564 |
| Germany DIN | 2.4068 | 17751 | 17750 | 17752 | – | 17754 |
| UK BS | NA 12 | 3074 | 3072 | 3076 | – | – |