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Nickel 201 (N02201)
Ni 99.0 C 0.02 Cu 0.25 Fe 0.40 Mn 0.35 Si 0.35 S 0.01

High Performance Alloys stocks and produces this grade in the following forms: Bar, wire, sheet, plate, coil and forgings. Request quote on this grade. See our on-line catalog for sizes stocked

Overview

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

Machinability Ratings

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 - -

 

 
 
   
 
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