Alloy 20 Tube

ASME SB 729 uns n08020 Seamless Tube and carpenter 20 Tubing supplier in India

Alloy 20 Tube
Alloy 20 Tube
Alloy 20 Seamless Tube
Alloy 20 Seamless Tube
Alloy 20 Tubing
Alloy 20 Tubing
Table of contents

Alloy 20 Tube Specification

Specifications ASTM B729 / SB729
ASTM B729 UNS N08020 Tubes Size 15 NB to 150 NB IN
DIN 2.4660 Tubing Wall Thickness .035" -.095', (special wall thicknesses available)
Specialized in Large Diameter Size
Carpenter 20 Tubing Type Seamless / ERW / Welded / Fabricated / Hollow
UNS N08020 Tubes Schedule SCH5, SCH10, SCH40, STD, SCH80, SCH160
Incoloy Alloy 20 Tubes Condition Hot-Finished, Annealed, Cold-Drawn, Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF
Nickel Alloy 8020 Tubes Form Condenser, Square, Hydraulic, Heat-Exchanger, U-Tube, Coiled, Round, Capillary, Boiler, Straight, Rectangular
20cb3 Alloy 20 Tubes Length Single Random, Double Random & Cut Length.
End Plain End, Beveled End, Treaded.
Marking All Alloy 20 Stainless Steel 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
Alloy 20 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 DIN 2.4660 Tubes to meet your specifications.

ASTM B729 UNS N08020 Seamless Tube

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

DIN 2.4660 Welded Tube

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

Value Added services:

Alloy 20 Tube services

Carpenter 20 Tube Types

Alloy 20 Gas Tube Ar 15 supplier
Alloy 20 Gas Tube Ar 15
ASTM B729 UNS N08020 Bourdon Tube Stockist
ASTM B729 UNS N08020 Bourdon Tube
DIN 2.4660 Capillary Tube
DIN 2.4660 Capillary Tube
Carpenter 20 Furnace Tube
Carpenter 20 Furnace Tube
UNS N08020 Gas Tube
UNS N08020 Gas Tube
Incoloy Alloy 20 Heat Exchanger Tubes
Incoloy Alloy 20 Heat Exchanger Tubes
Nickel Alloy 8020 Mortar Tube
Nickel Alloy 8020 Mortar Tube
20cb3 Alloy 20 Radiant Tube
20cb3 Alloy 20 Radiant Tube
Alloy 20 Stainless Steel Square Tube
Alloy 20 Stainless Steel Square Tube

UNS N08020 Tube Nominal Tube Wall Thickness & Dimensions

ASTM B729 UNS N08020 Tubes
(O.D.)		 DIN 2.4660 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
Alloy 20 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
Carpenter 20 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

Incoloy Alloy 20 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.

Nickel Alloy 8020 Tubing Chemical Composition

Alloy 20 Ni C Mo Mn Si Fe Cu S P Cr
32 – 38 0.02 max 2 – 3 1 – 2 0.7 max Bal 3 – 4 0.005 max 0.02 max 19 – 21

20cb3 Alloy 20 Tubes Mechanical Properties

Density Melting Point Yield Strength (0.2%Offset) Tensile Strength Elongation
8.1 g/cm3 1443 °C (2430 °F) Psi – 35000 , MPa – 241 Psi – 80000 , MPa – 551 30 %

Alloy 20 Stainless Steel Tube Equivalent Grades

STANDARD UNS WERKSTOFF NR. AFNOR EN JIS BS GOST
Alloy 20 N08020 2.4660 Z2NCUD31-20AZ NiCr20CuMo – – –

UB6 Alloy SB 729 UNS N08020 Seamless Tube Price in India

Alloy 20 Tubing Price in India PACK QTY PRICE
1/4"(13.72) NBxSch10/10s(1.65) wall x1000 3
£255.00
1/4"(13.72) NBxSch10/10s(1.65) wall x1000 5
£380.00
1/4"(13.72) NBxSch10/10s(1.65) wall x2000 1
£155.00
1/4"(13.72) NBxSch10/10s(1.65) wall x2000 3
£385.00