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For precision capillary tube of metal materials, we have been working on it for more than 30 years.
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Alloy 36Material
Alloy 36, Invar 36, FeNi36, 1.3912, K93600, K93601, K93602, K93603, K93050, 1J36, 4J36
Overview
Alloy 36 is a binary iron-nickel alloy with a particularly low heat expansion coefficient, whereby the levels of carbon and manganese as well as freedom of impurities are significant. Cold forming also reduces the heat expansion. Artificial aging with gradual heat treatment stabilizes the expansion coefficients in a selected temperature range.
Characteristics
◇ An extremely low expansion coefficient between -250°C (-418°F) and +260°C (500°F)
◇ Good ductility and toughness.
Typical Applications
◇ Piping for storage and transport of liquefied gases
◇ Components for OLED screens
◇ Measuring and control devices for temperatures below 200°C (392°F), e.g. for thermostats
◇ Bushings for screw or rivet joints between various metals
◇ Bi-metal components and thermostatic bi-metals, where Alloy 36 is the passive component
◇ Forms for the production of carbon-fiber reinforced plastic (CFP), especially for the aerospace industry
◇ Frameworks for electronic control units in satellites and space travel down to -200°C (-328°F)
◇ Support elements for electro-magnetic lenses in laser control units
◇ Pendulum
◇ Components for the automotive industry
◇ Overhead power lines in an alloyed, age-hardenable variant
Chemical Composition (wt%)
Typical Mechanical Properties of Alloy 36
Soft annealed condition
|
Temperature |
Tensile Strength |
Yield Strength
(0.2% Offset)
|
Elongation on
50 mm (2 inch)
|
Reduction of Area |
|||
|
°C |
°F |
MPa |
ksi |
MPa |
ksi |
% |
% |
|
20 |
68 |
490 |
71 |
240 |
35 |
42 |
70 |
|
100 |
212 |
430 |
62 |
180 |
26 |
43 |
70 |
|
200 |
392 |
430 |
62 |
110 |
16 |
45 |
70 |
|
300 |
572 |
410 |
59 |
93 |
13 |
48 |
70 |
|
400 |
752 |
350 |
51 |
93 |
13 |
53 |
70 |
|
500 |
932 |
290 |
42 |
93 |
13 |
59 |
69 |
|
600 |
1112 |
210 |
30 |
77 |
11 |
68 |
67 |
Hardness
Annealed: 150 HV (80HRB) max.
Full hard: 220 HV (96HRB) min.
Corrosion Resistance
In a dry atmosphere, Alloy 36 is corrosion resistant at room temperature. In unfavorable conditions, for example a humid atmosphere, corrosion may occur on the surface.
Heat Treatment
The annealing should be performed at temperatures of 820 to 900°C (1580-1652°F), followed by air cooling. Compared with air cooling, water cooling following annealing results in a lower heat expansion coefficient. However, the resulting microstructure is not stable. Following cold forming of less than 10%, the annealing temperature should not exceed 860°C (1580 °F).
Available Process
(1 )Hot formed, annealed, descaled
(2)Cold worked and bright annealed
(3)Cold worked, aged, polished (MP, EP etc.)
Common Tests
Chemical composition
Tension
Hardness
Flaring
Flange
Flattening
Micro structure
Hydrostatic
NDT
Intergranular Corrosion
Surface condition
Shape and dimension
Positive Material Identification
Product Forms
|
Form |
Size range |
|
Capillary tube |
OD 0.08 ~ 6.0 mm WT 0.015 ~ 1.5 mm |
|
Thin wall & Ultra thin wall seamless tube |
OD6.0 ~80.0 mm WT 0.05 ~4.5 mm |
|
Micro ID and heavy thick wall seamless tube |
OD3.0 ~50.0 mm ID 0.30 ~5.0 mm |
|
Precision conic seamless tube |
Bigger end: OD3.0 - 426.0mm Smaller end: OD2.5 - 346.0mm WT: 0.15 - 40.0mm |
|
HP /UHP BA+ tube EP tube |
OD 1.0 ~ 76 mm WT 0.10 ~ 10.0 mm |
|
Small caliber precision seamless tube |
OD6.0 ~89 mm WT 0.50 ~9.0 mm |
|
Profiled seamless tube |
Build to drawing Build to specification |
|
Bourdon tube |
Y40, Y50, Y60, Y70, Y100, Y150 |
