Invar 36 Tube

Invar 36 Tube
Invar 36 Tube
Invar 36 Seamless Tube
Invar 36 Seamless Tube
Invar 36 Tubing
Invar 36 Tubing

Invar 36 Tube Specification

Common Trade Names: Invar 36®, Nilo 6®, Pernifer 6®.

Invar 36 Tube is available the following size ranges.
Outside Diameter - 0.25mm (0.010") up to 16.00mm (0.625")
Wall - 0.05mm (0.002") up to 1.00mm (0.040")
Straight Lengths - 1.00mm (0.040") up to 5000.00mm (197")
Coils Lengths - 5 Metres to 15 Metres
Standard Tolerance- OD &ID +/-0.03mm (0.0012")
Wall +/- 10%
Tight Tolerance - OD&ID +/- 0.015mm (0.0006")
Wall +/-3%
Some thin wall tubes up to 25.40 mm (1.000") can be supplied.

Alloy 36 Tubes Size 15 NB to 150 NB IN
Nickel Alloy 36 Tubing Wall Thickness .035" -.095', (special wall thicknesses available)
Specialized in Large Diameter Size
Invar 1.3912 Tubing Type Seamless / ERW / Welded / Fabricated / Hollow
Nilo Alloy 36 Tubes Schedule SCH5, SCH10, SCH40, STD, SCH80, SCH160
W-Nr 1.3912 Tubes Condition Hot-Finished, Annealed, Cold-Drawn, Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF
NAS 36 UNS K93600 Tubes Form Round, Square, Condenser, Capillary, U-Tube, Hydraulic, Heat-Exchanger, Straight, Rectangular, Coiled, Boiler
4j36 Alloy Tubes Length Single Random, Double Random & Cut Length.
End Plain End, Beveled End, Treaded.
Marking All Invar Alloy 36 Pipes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.)
Material Test Certificates (MTC) Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
Invar 36 Tube manufacturers
  • Sumitomo Metals, Japan
  • Nippon Steel Corporation, Japan
  • Kobe Special Tube, Japan
  • Sanyo Special Steel, Japan
  • Tubacex Tubos Inoxidables S.A., Spain
  • Schoeller Bleckmann, Austria
  • Seah Steel Corporation, Korea
We can also cut, thread, and groove Nickel Alloy 36 Tubes to meet your specifications.

Alloy 36 Seamless Tube

Outside diameter Wall thickness Length
5.0 ~ 203.2mm As per requirement Upto 6 Meters

Nickel Alloy 36 Welded Tube

Outside diameter Wall thickness Length
5.0 ~ 1219.2mm 1.0 ~ 15.0 mm Upto 6 Meters

Value Added services:

Invar 36 Tube services

Invar 1.3912 Tube Types

Invar 36 Gas Tube Ar 15 supplier
Invar 36 Gas Tube Ar 15
Alloy 36 Bourdon Tube Stockist
Alloy 36 Bourdon Tube
Nickel Alloy 36 Capillary Tube
Nickel Alloy 36 Capillary Tube
Invar 1.3912 Furnace Tube
Invar 1.3912 Furnace Tube
Nilo Alloy 36 Gas Tube
Nilo Alloy 36 Gas Tube
W-Nr 1.3912 Heat Exchanger Tubes
W-Nr 1.3912 Heat Exchanger Tubes
NAS 36 UNS K93600 Mortar Tube
NAS 36 UNS K93600 Mortar Tube
4j36 Alloy Radiant Tube
4j36 Alloy Radiant Tube
Invar Alloy 36 Square Tube
Invar Alloy 36 Square Tube

Nilo Alloy 36 Tube Nominal Tube Wall Thickness & Dimensions

Alloy 36 Tubes
(O.D.)
Nickel Alloy 36 Tube Gauge
BWG 00 BWG 0 BWG 1 BWG 2 BWG 3 BWG 4 BWG 5 BWG 6 BWG 7 BWG 8 BWG 9 BWG 10 BWG 11 BWG 12 BWG 13 BWG 14 BWG 15 BWG 16 BWG 17 BWG 18 BWG 19 BWG 20 BWG 21 BWG 22 BWG 23 BWG 24
Invar 36 Tubing Wall Thickness (Inches)
0.380 0.340 0.300 0.284 0.259 0.238 0.220 0.203 0.180 0.165 0.148 0.134 0.120 0.109 0.095 0.083 0.072 0.065 0.058 0.049 0.042 0.035 0.032 0.028 0.025 0.022
Invar 1.3912 Tubes Inside Dia
1/4"  N/A  N/A  N/A  N/A  N/A  N/A  N/A  N/A  N/A  N/A  N/A  N/A 0.010 0.032 0.060 0.084 0.106 0.120 0.134 0.152 0.166 0.180 0.186 0.194 0.200 0.206
3/8"  N/A  N/A  N/A  N/A  N/A  N/A  N/A  N/A 0.015 0.045 0.079 0.107 0.135 0.157 0.185 0.209 0.231 0.245 0.259 0.277 0.291 0.305 0.311 0.319 0.325 0.331
1/2"  N/A  N/A  N/A  N/A  N/A 0.024 0.060 0.094 0.140 0.170 0.204 0.232 0.260 0.282 0.310 0.334 0.356 0.370 0.384 0.402 0.416 0.430 0.436 0.444 0.450 0.456
5/8"  N/A  N/A 0.025 0.057 0.107 0.149 0.185 0.219 0.265 0.295 0.329 0.357 0.385 0.407 0.435 0.459 0.481 0.495 0.509 0.527 0.541 0.555 0.561 0.569 0.575 0.581
3/4"  N/A 0.070 0.150 0.182 0.232 0.274 0.310 0.344 0.390 0.420 0.454 0.482 0.510 0.532 0.560 0.584 0.606 0.620 0.634 0.652 0.666 0.680 0.686 0.694 0.700 0.706
7/8" 0.115 0.195 0.275 0.307 0.357 0.399 0.435 0.469 0.515 0.545 0.579 0.607 0.635 0.657 0.685 0.709 0.731 0.745 0.759 0.777 0.791 0.805 0.811 0.819 0.825 0.831
1" 0.240 0.320 0.400 0.432 0.482 0.524 0.560 0.594 0.640 0.670 0.704 0.732 0.760 0.782 0.810 0.834 0.856 0.870 0.884 0.902 0.916 0.930 0.936 0.944 0.950 0.956
1 1/8" 0.365 0.445 0.525 0.557 0.607 0.649 0.685 0.719 0.765 0.795 0.829 0.857 0.885 0.907 0.935 0.959 0.981 0.995 1.009 1.027 1.041 1.055 1.061 1.069 1.075 1.081
1 1/4" 0.490 0.570 0.650 0.682 0.732 0.774 0.810 0.844 0.890 0.920 0.954 0.982 1.010 1.032 1.060 1.084 1.106 1.120 1.134 1.152 1.166 1.180 1.186 1.194 1.200 1.206
1 1/2" 0.740 0.820 0.900 0.932 0.982 1.024 1.060 1.094 1.140 1.170 1.204 1.232 1.260 1.282 1.310 1.334 1.356 1.370 1.384 1.402 1.416 1.430 1.436 1.444 1.450 1.456
1 3/4" 0.990 1.070 1.150 1.182 1.232 1.274 1.310 1.344 1.390 1.420 1.454 1.482 1.510 1.532 1.560 1.584 1.606 1.620 1.634 1.652 1.666 1.680 1.686 1.694 1.700 1.706
2" 1.240 1.320 1.400 1.432 1.482 1.524 1.560 1.594 1.640 1.670 1.704 1.732 1.760 1.782 1.810 1.834 1.856 1.870 1.884 1.902 1.916 1.930 1.936 1.944 1.950 1.956
2 1/4" 1.490 1.570 1.650 1.682 1.732 1.774 1.810 1.844 1.890 1.920 1.954 1.982 2.010 2.032 2.060 2.084 2.106 2.120 2.134 2.152 2.166 2.180 2.186 2.194 2.200 2.206
2 1/2" 1.740 1.820 1.900 1.932 1.982 2.024 2.060 2.094 2.140 2.170 2.204 2.232 2.260 2.282 2.310 2.334 2.356 2.370 2.384 2.402 2.416 2.430 2.436 2.444 2.450 2.456
2 3/4" 1.990 2.070 2.150 2.182 2.232 2.274 2.310 2.344 2.390 2.420 2.454 2.482 2.510 2.532 2.560 2.584 2.606 2.620 2.634 2.652 2.666 2.680 2.686 2.694 2.700 2.706
3" 2.240 2.320 2.400 2.432 2.482 2.524 2.560 2.594 2.640 2.670 2.704 2.732 2.760 2.782 2.810 2.834 2.856 2.870 2.884 2.902 2.916 2.930 2.936 2.944 2.950 2.956
3 1/4" 2.490 2.570 2.650 2.682 2.732 2.774 2.810 2.844 2.890 2.920 2.954 2.982 3.010 3.032 3.060 3.084 3.106 3.120 3.134 3.152 3.166 3.180 3.186 3.194 3.200 3.206
3 1/2" 2.740 2.820 2.900 2.932 2.982 3.024 3.060 3.094 3.140 3.170 3.204 3.232 3.260 3.282 3.310 3.334 3.356 3.370 3.384 3.402 3.416 3.430 3.436 3.444 3.450 3.456
3 3/4" 2.990 3.070 3.150 3.182 3.232 3.274 3.310 3.344 3.390 3.420 3.454 3.482 3.510 3.532 3.560 3.584 3.606 3.620 3.634 3.652 3.666 3.680 3.686 3.694 3.700 3.706
4" 3.240 3.320 3.400 3.432 3.482 3.524 3.560 3.594 3.640 3.670 3.704 3.732 3.760 3.782 3.810 3.834 3.856 3.870 3.884 3.902 3.916 3.930 3.936 3.944 3.950 3.956
4 1/4" 3.490 3.570 3.650 3.682 3.732 3.774 3.810 3.844 3.890 3.920 3.954 3.982 4.010 4.032 4.060 4.084 4.106 4.120 4.134 4.152 4.166 4.180 4.186 4.194 4.200 4.206
4 1/2" 3.740 3.820 3.900 3.932 3.982 4.024 4.060 4.094 4.140 4.170 4.204 4.232 4.260 4.282 4.310 4.334 4.356 4.370 4.384 4.402 4.416 4.430 4.436 4.444 4.450 4.456
4 3/4" 3.990 4.070 4.150 4.182 4.232 4.274 4.310 4.344 4.390 4.420 4.454 4.482 4.510 4.532 4.560 4.584 4.606 4.620 4.634 4.652 4.666 4.680 4.686 4.694 4.700 4.706
5" 4.240 4.320 4.400 4.432 4.482 4.524 4.560 4.594 4.640 4.670 4.704 4.732 4.760 4.782 4.810 4.834 4.856 4.870 4.884 4.902 4.916 4.930 4.936 4.944 4.950 4.956
5 1/4" 4.490 4.570 4.650 4.682 4.732 4.774 4.810 4.844 4.890 4.920 4.954 4.982 5.010 5.032 5.060 5.084 5.106 5.120 5.134 5.152 5.166 5.180 5.186 5.194 5.200 5.206

W-Nr 1.3912 Hydraulic Tube Burst Pressure

(Barlow’s Formula)

P = (2ST÷D) (45,000 PSI Min Tensile Stress)
P = Burst Pressure
S = 45,000 lbs. PSI Tensile Strength
T = Nominal Wall Thickness
D = OD/ Outside Diameter

1/4" x 0.035 - 12,600 5/8" x 0.083 - 11,950 1-1/8" x 0.065 - 5,200
1/4 x 0.049 - 17,640 3/4 x 0.035 - 4,200 1-1/8" x 0.083 - 6,640
5/16" x 0.035 - 10,080 3/4" x 0.049 - 5,880 1-1/8 x 0.95 - 7,600
5/16 x 0.049 - 14,110 3/4 x 0.065 - 7,800 1-1/8 x 0.109 - 8,720
3/8" x 0.035 - 8,400 3/4" x 0.083 - 9,960 1-1/4" x 0.065 - 4,680
3/8 x 0.049 - 11,760 3/4 x 0.095 - 11,400 1-1/4 x 0.083 - 5,975
3/8" x 0.065 - 15,600 3/4" x 0.109 - 13,080 1-1/4 x 0.095 - 6,840
7/16 x 0.035 - 7,200 7/8 x 0.049 - 5,040 1-1/4" x 0.109 - 7,848
7/16" x 0.049 - 10,080 7/8" x 0.065 - 6,685 1-1/4 x 0.120 - 8,640
7/16 x 0.065 - 13,370 7/8 x 0.083 - 8,535 1-1/2" x 0.083 - 4,980
1/2" x 0.035 -  6,300 7/8" x 0.095 - 9,770 1-1/2 x 0.095 - 5,700
1/2 x 0.049 -  8,820 1" x 0.049 - 4,410 1-1/2" x 0.109 - 6,540
1/2" x 0.065 - 11,700 1" x 0.065 - 5,850 1-1/2 x 0.120 - 7,200
5/8 x 0.035 -  5,040 1" x 0.083 - 7,470 2" x 0.134 - 6,030
5/8" x 0.049 -  7,055 1" x 0.095 - 8,550 2" x 0.188 - 8,460
5/8 x 0.065 -  9,360

Note: To compute safe working pressures, above Burst Pressures should be divided by your desired safety factor.

NAS 36 UNS K93600 Tubing Chemical Composition

Grade C Mn P S Si Ni Cr Fe W Co
Invar 36 .15 max .60 max .006 max .004 max .40 max 36.0 nom .25 max Bal - .50 max

4j36 Alloy Tubes Mechanical Properties

Invar Specifications

ASTM F-1684

MIL 1-23011 CL 7

AMS 1-23011 CL 7

Invar Alloy 36 Tube Equivalent Grades

Iron-Nickel Alloys / Nickel-Iron Alloys Invar 36 Tube, Pipe & Tubing Equivalent Grades

Alloy DN-Trade Name WERKSTOFF NR. UNS-No. ASTM Specification DIN Specification
Ni 36* Dilaton 36 1.3912 K93603 ASTM F1684 DIN 17745 / SEW 385

FeNi36 Invar Seamless Tube Price in India

Invar 36 Tubing Price in India PACK QTY PRICE
3.0 dia x 0.50 wall x500 1
£89.00
3.0 dia x 0.50 wall x2000 1
£180.00
3.0 dia x 0.50 wall x2000 3
£452.00
1/4"(13.72) NBxSch10/10s(1.65) wall x500 1
£80.00
1/4"(13.72) NBxSch10/10s(1.65) wall x500 2
£124.00
1/4"(13.72) NBxSch10/10s(1.65) wall x500 3
£164.00