|
Request
for Quotation
Alloy
36 Strip, Sheet, Plate, Rod and Wire
Hot Rolled Plate | Invar Welding Wire
| Cold Rolled Sheet |
Coil Cold Rolled
| Invar Rod | Machinability Data
| PRODUCTS
Data sheet:
|
Alloy
36 otherwise known as Invar 36 or Nilo 36 is a Nickel-Iron low expansion alloy containing
36% Nickel. It maintains nearly constant dimensions
over the range of normal atmospheric temperatures
and has a low coefficient of expansion from
cryogenic temperatures to about +500°F
(260°C).
Nilo 36 also retains good strength and toughness
at cryogenic temperatures. Applications include
standards of length, thermostat rods, laser
components and tanks and piping for the storage
and transportation of liquefied gasses. |
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Coefficient
of Expansion (µm/m °C)
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|
|
|
|
| 8.11 |
1430 |
1.5
(At 20 - 100°C)
|
220°
C |
10.0
|
1.3912 |
| |
|
2.6
(At 20 - 200°C) |
|
|
K93600 |
| |
|
|
|
|
K93601 |
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TYPICAL
NOMINAL CHEMISTRY
|
TYPICAL
TENSILE STRENGTH
|
| NICKEL (NI) |
36.0 |
ANNEALED |
85,000 MAX. |
| CHROMIUM (CR) |
0.25 |
1/4 HARD |
90,000 to 115,000 |
| MANGANESE (MN) |
0.50 |
1/2 HARD |
105,000 to 125,000 |
| SILICON (SI) |
0.25 |
HARD |
120,000 MIN. |
| CARBON (C) |
0.05 |
|
| ALUMINUM (AL) |
0.10 |
TYPICAL HARDNESS,
ROCKWELL B |
| MAGNESIUM (MG) |
0.10 |
ANNEALED |
70 MAX. |
| ZIRCONIUM (ZR) |
0.10 |
1/4 HARD |
78 to 83 |
| TITANIUM (TI) |
0.10 |
1/2 HARD |
84 to 88 |
| PHOSPHORUS (P) |
0.020 |
|
| SULFUR (S) |
0.020 |
|
| IRON |
BALANCE |
|
|
|
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Approx
Tensile Strength (N/mm2)
|
|
| The
Nilo alloy wires are usually used in the annealed
condition (residual cold work distorts the
coefficients of thermal expansion). |
Annealed:
450-550
|
| Annealed:
850 - 1000°C |
Hard
Drawn:
700-900 |
For
highest dimensional stability:
830°C - 30 mins - W/Q
Re-heat to 300°C - 1 Hr - W/Q
Finally heat to 100°C - 48 Hrs - A/C |
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Top of Page
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TYPICAL
LINEAR COEFFICIENT OF THERMAL EXPANSION
(cm. per cm. C x 10 - 6)
|
|
30 to 100 |
1.18 |
| 30 to 200 |
1.72 |
| 30 to 300 |
4.92 |
| 30 to 350 |
6.60 |
| 30 to 400 |
7.82 |
| 30 to 425 |
N/A |
| 30 to 450 |
8.82 |
| 30 to 500 |
9.72 |
| 30 to 550 |
N/A |
| 30 to 600 |
11.35 |
| 30 to 700 |
12.70 |
| 30 to 800 |
13.45 |
| 30 to 900 |
13.85 |
| 30 to 1000 |
N/A |
| |
* PLEASE NOTE THIS IS A NOMINAL DATA SHEET
WORKABILITY
FORGING: The principal precaution to observe in
forging is to heat quickly and avoid soaking in the furnace. Long soaking
may result in a checked surface due to absorption of sulfur from the
furnace atmosphere and/or oxide penetration. A forging temperature of
2000/2150øF (1100/1180øC) is preferred.
Invar alloy 36 may also be swaged and cold upset.
GRINDING: A silicon carbide wheel is desirable, preferably a soft
wheel which will wear without loading. For finish grinding, a satisfactory
grade to start with is No. 80 grit.
WELDING: Alloy 36 can be welded by the conventional methods.
Caution must be taken so as not to overheat the molten metal. This will
avoid spattering of the molten metal and pits in the welded area. When
filler rod is required, Invar rod has been used.
BRAZING: Silver and zinc-free alloys have been used for brazing
Invar 36. This alloy should be annealed prior to brazing. Joints should be
designed to avoid placing material in tension during brazing.
PLATING: Alloy 36 can be chromium, cadmium and nickel plated or
zinc coated by the usual methods used for ferrous alloys.
Before machining, the welded structures
must be fully annealed.
The machinability of Invar is similar to
austenitic stainless steel such as AISI 304.
The following milling parameters can be
used (only for Invar tooling fabrication and particularly for large
tools.)
| Tool
Configuration |
Tool
Type |
Use |
Surface
Speed |
Feed
Rate |
| End
Mill |
Carbide |
Rough
/ Finish |
320
in./min. |
1.0
in./min. |
End
Mill
(Corn Cob) |
HSS |
Rough
Milling |
375
in./min. |
2.0
in./min. |
| End
Mill |
HSS |
Finish
Milling |
Up to
600 in./min. |
4.0
in./min. |
 |
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|
PHYSICAL CONSTANTS: |
| Specific gravity |
8.05 |
| Density - lb/in3 |
0.291 |
| Density - kg/m3 |
8055 |
|
Thermal conductivity |
|
BTU-in/ft2-hr-°F
|
72.6 |
|
W/m · K |
10.5 |
|
Electrical resistivity |
|
ohm-cir mil/ft
|
495 |
|
microhm-mm |
820 |
| Temperature coefficient of electrical resistivity |
|
per °F (70/212°F) |
0.0006
|
| per °C (21.1/100°C) |
0.0011 |
| Mean coefficient of thermal expansion |
|
10-6/°F (0.0/350°F) |
0.90 |
|
k-1 (-18/175°C) |
1.6 |
| Inflection point |
375°F (191°C) |
| Curie temperature |
535°F (279°C) |
| Melting point |
2600°F (1427°C) |
| Specific heat |
|
Btu/lb-°F |
0.123 |
|
kJ/kg K |
0.515 |
|
|
|
USES: |
- Molds for composite aircraft parts
- Molds for composite boat parts
- Precision condenser plates
- Resonant cavities for radars
- Precision measurements constructions
- Special joints and washers
- Thermostatic bimetals
- Laser part applications
- Clock pendulums
- Balance wheels
- Watch parts
- Tooling
|
|
FORMS
AVAILABLE: |
- Hot rolled, forged bar and rod
- Cold or hot rolled strip and plate
- Cold rolled sheet
- Wire
- Welding wire TIG and MIG
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Top of Page
|
Hot Rolled Plate |
TM WIDTH LENGTH
.187 x 72 x 96
.250 x 72 x 96
.375 x 72 x 96
.500 x 72 x 96
.625 x 70 x 72
.750 x 16 x 100
1 x 16 x 56
1.5 x 16 x 46
2 x 20 x 60
2.5 x 8.250 x 51
4 x 7.125 x 18.5
4.625 x 5 x 51
5 x 12.7 x 15.5
|
|
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Other thicknesses and
widths available on request. |
|
Invar Welding
Wire |
.045 x MIG spools 25# approx spools
.093 x 36 TIG packaged in 10# approx tubes
.078 x 36 TIG
.093 x 36 TIG |
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|
Cold Rolled
Sheet |
|
THICKNESS x WIDTH x
LENGTH
|
|
.015 x 10.5
x 72
|
|
.030 x 24 x 72
|
|
.041 x 24 x 72
|
|
.060 x 24 x 60
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.060 x 24 x 120
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.100 x 24 x 72
|
|
.125 x 24 x 60
|
|
.125 x
24 x 120
|
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Coil
thicknesses from .005 to .135 available on request
|
|
Invar rod |
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DIAMETER
LENGTH
.078
x 36
.093 x
36
.100 x
72
.125 x
120
.250 x
72
.500 x
144
.750 x
144
1.0
x 144
1.125 x
144
2.0
x 144
3.0
x 144
4.0
x 144
|
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(Other sizes of rod on
request) |
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Some sizes of plate are also available with a smooth ground surface,
ie,.187,.250,.375,.625
M.O.S.A.= Many other sizes available
|
- MIL I 230IIC Class 7 ground plate and cold rolled sheet
- MIL S 16598 Available in rod diameters .500 and up
- Boeing-ASTM B-753 Hot rolled plate
|
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Similar Specifications |
|
UNS
K93600, K93601
ASTM B
388, B 753
DIN 1715
NILO 36
INVAR 36
Werkstoff
Nr. 1.3912 |
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Disclaimer
Every effort is made to ensure that
technical specifications are accurate. However, technical specifications
included herein should be used as a guideline only. All specifications are
subject to change without notice.
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