| Alloy 200 (UNS N02200) is an unalloyed wrought nickel. It offers excellent corrosion resistance, good mechanical, magnetic conductivities.and magnetostrictive properties and useful thermal and electrical conductivities. |
| |
| Alloy 201 (UNS N02201), with
reduced carbon content (0.02% max), shows better corrosion resistance at elevatedtemperatures above 300°C (570°F) by avoiding graphite precipitation. |
| |
| This alloys are characterised by: |
| • |
excellent corrosion resistance in many alkaline media |
| • |
good mechanical properties within a wide range of temperatures |
| • |
magnetization decreasing continuously between -273 and 360°C (-458 and 680°F) and showing paramagnetism above the |
| |
Curie point |
| |
| Designation and Standards |
Country
National Standards |
Material
Designation |
Specification |
Chem.
composition |
Tube and Pipe
|
Sheet
and plate |
Rod
and bar |
Strip |
Wire |
Forgings |
| seamless |
welded |
France
AFNOR |
|
|
|
|
|
|
|
|
|
Germany
DIN
VdTUV2) |
W-Nr. 2.4066
Ni 99.2
W-Nr. 2.4068
LC-Ni 99 |
17740
345 |
17751
345 |
177511) |
17750
345 |
17752
345 |
17750
345 |
17753
|
17754
345 |
United
Kingdom
BS |
NAI I
NA12
|
|
3074 |
|
3072 |
3076 |
3073 |
3075 |
|
USA
ASTM
ASME
AMS |
UNS N02200
N02201 |
|
B161/163
SB161/163 |
B725/730
|
B162
SB162
55532)
|
B160
SB160
|
B162
SB162
55532) |
|
B564
SB564 |
| ISO |
Ni 99.0
LC-Ni 99.0 |
|
|
|
|
|
|
|
|
|
| I) Ni 99.2 only 2) LC-Ni 99 only |
| Page 2 |
| Chemical Composition(%) |
| Alloy 200 |
Ni |
Fe |
C |
Mn |
Si |
Cu |
Mg |
Ti |
Si |
| min |
99.2 |
- |
- |
- |
- |
- |
- |
- |
- |
| max |
- |
0.4 |
0.10 |
0.3 |
0.1 |
0.25 |
0.05 |
- |
0.005 |
|
| |
| Alloy 201 |
Ni |
Fe |
C |
Mn |
Si |
Cu |
Mg |
Ti |
Si |
| min |
99.2 |
- |
- |
- |
- |
- |
- |
0.01 |
- |
| max |
- |
0.4 |
0.02 |
0.3 |
0.1 |
0.25 |
0.05 |
0.10 |
0.005 |
|
| |
| Mechanical Properties |
| The following mechanical properties are applicable to Alloys 200 & 201 n the indicated forms and size ranges and in the annealed |
| condition (unless otherwise specified). Material outside these size ranges with agreed properties is subject to special enquiry. |
| |
Sheet and plate |
up to 50mm |
2 in |
| Strip |
0.3 to 3mm |
0.012 to 0.12 in |
| Rod and bar |
up to 250mm |
10 in |
| Forgings |
up to 150mm |
6 in |
| Tube and pipe wall |
1 to 12.5mm |
0.04 to 0.5 in |
Diameter |
6 to 275mm |
0.25 to I I in |
|
| |
| |
According to spec. |
Condition |
Tensile strength |
0.2%Yield Strength |
1.0%Yield Strength |
Elong A5
% |
| N/mm2 |
ksi |
N/mm2 |
ksi |
N/mm2 |
ksi |
| Alloy200 |
DIN 17750-54
|
annealed |
³380 |
³55 |
³100 |
³14.5 |
³125 |
³18.1 |
³40 |
ASTM B 160-163,
725,730
|
annealed |
³380 |
³55 |
³105 |
³15 |
- |
- |
³40 |
| stress rel. |
³450 |
³65 |
³275 |
³40 |
- |
- |
³15 |
Typical values
|
annealed |
440 |
63.8 |
150 |
21.8 |
180 |
26.1 |
44 |
| Alloy201 |
DIN 17750-54, VdTUV 345
|
annealed |
³340 |
³49.3 |
³80 |
³11.6 |
³105 |
³15 |
³40 |
ASTM B 160-163,
725,730
|
annealed |
³345 |
³50 |
³80 |
³12 |
- |
- |
³40 |
| stress rel. |
³415 |
³60 |
³205 |
³30 |
- |
- |
³15 |
| Typical values |
annealed |
415 |
60 |
125 |
18.1 |
150 |
21.8 |
47 |
|
Some standards show greater deviations for 0.2% yield values Mechanical properties at room temperature
|
| Please Note: The figures quoted are intended for guidance only. For further information, please refer to the standards listed or contact our sales or QA Departments |
| |
| Metallurgical Structure |
Alloys 200 and 201 have face- centred cubic structures between temperatures close to absolute zero and melting point. |
| |
| Corrosion Resistance |
Alloys 200 and 201 have excellent resistance to many corrosive media from acid to alkaline. They are most useful under reducing conditions but, where a passive oxide is formed, they may also be used in oxidizing conditions.
Their most significant property is extremely high resistance to caustic alkalies up to and including the molten state. The extra-low carbon content of Alloy 201 gives virtual immunity to intergranular attack above about 3 15'C (6007). The presence of chlorates must be kept to a minimum, as they accelerate the rate of attack. |
| |
The resistance of Alloys 200 and 201 to mineral acids varies according to temperature and concentration and whether or not the solution is aerated. Corrosion resistance is better in deaerated acid. |
| |
| In acid, alkaline and neutral salt solutions, Alloys 200 and 201 show good resistance, but severe attack occurs in oxidising salt solutions. Both alloys are resistant to all dry gases at room temperature. The low-carbon alloy can be used in dry chlorine and hydrogen chloride - at temperatures up to 550°C (1020°F). |
| |
| Applications |
Unalloyed wrought nickel combines excellent mechanical properties with good corrosion resistance. Above 300°C (570°F) working temperature, the low carbon version is efficient. The limited carbon content lowers mechanical, values and work-hardening rate but promotes ductility. |
| |
| Typical applications include: |
| • |
food production, such as handling of cooling brines, fatty acids and fruit juices - resistance to acid, alkaline and neutral salt solutions and to organic acids |
| Page 3 |
| Typical applications continued : |
| • |
valve seals, pump sleeves and wear rings in marine environments - high strength and resistance to seawater
|
| • |
storing and transportation of phenol - immunity from any form of attack ensures absolute product purity |
| • |
manufacture and handling of sodium hydroxide, particularly at temperatures above 300°C (5707). Typical industries where sodium hydroxide is used are the: |
| |
- |
production of viscose rayon and manufacture of soap – general corrosion resistance and virtual immunity to intergranular attack above 315'C (600'F) |
| |
- |
production of hydrochloride and chlorination of hydrocarbons such as benzene, methane and ethane - resistance at elevated temperatures to dry chlorine and hydrogen chloride |
| |
- |
manufacture of vinyl chloride monomer - resistance to hydrogen chloride at elevated temperatures |
|
| Stock Size Range |
| Alloy 200/201 - Bar, Tube, Pipe and Fittings |
Bar
mm dia |
Tube
mm o/d |
Pipe
nb |
Seamless fittings
nb |
| 6.35 - 152.4 |
6.35 - 25.4 |
1/2" - 6" |
1/2" - 6" |
|
| |
| Alloy 200/201 - Sheet and Plate |
| Size |
2m x 1m |
8'x 4' |
2.5m x 1.25m |
3m x 1.2m |
3m x 1.5m |
| Thickness |
1.6mm |
3, 4, 5, 6mm |
11/2 |
3, 2mm |
2,3, 4,5, 6mm |
|
| |
| Size |
10' x 5' |
4m x 2m |
6m x 2m |
6.096m x 2.438m |
| Thickness |
'/2", 3/4", I", 11/4" |
2,3,4,5,6,8,10mm |
- |
- |
|
The above tables represent our standard stock range.
Other sizes can be manufactured to order, often with short lead times |
