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ASTM A268 TP446 Tube

ASTM A268 TP446 tube

What is ASTM A268 TP446 Tube?

TP446 has higher modulus and thus lighter walls can be used without vibration issues. The ASTM A268 TP446 Tube is ferritic stainless steel alloy which is non-heat treatable. They are known for offering good resistance to oxidation, corrosion, and high temperature. The 446 Stainless Steel Tube is easily weldable using traditional methods except the oxyacetylene welding.

The tube comes with increased cr content and hence are tough to bend, draw and weld. They are suitably used within the temperature range of 1500-2100°F but their high temperature strength is quite low. They show high steam and water droplet resistance which offers a great cushioning for extensive conditions.

How do you know if a 446 Stainless Steel Tube is Seamless or Welded?

The ASTM A268 TP446 Seamless Tubes comes without any welded seam. They are stronger and offer good leakage proofing. They are also more expensive than the welded tubes. The SA268 TP446 Welded Tubes comes with welded seams. The seams might be present longitudinally and the tubes are welded using a wide range of techniques.

Table of Contents


Specification of ASTM A268 TP446 tube

446 Stainless Steel Seamless and Welded Tubing Manufacturer in India

Specifications of ASTM A268 TP446 Tube

ASTM A268 TP446 tube specification

 

 

 

446 Stainless steel tubes size

446 Stainless steel tubes size

  • 10.29 OD (mm) – 762 OD (mm)
SA268 TP446 welded tube thickness

SA268 TP446 welded tube thickness

  • 0.35 OD (mm) to 6.35 OD (mm)

 

 

SS 446 tubing dimension standard

SS 446 tubing dimension standard

  • ANSI B36.19, ANSI B36.10
ASTM A268 TP446 seamless tube external coating

ASTM A268 TP446 seamless tube external coating

  • 3LPE / 3LPP/ FBE/ DFBE/ PP

 

 

AISI 446 cold drawn seamless tube end

AISI 446 cold drawn seamless tube end  

  • Plain , Beveled , Treaded
446 Stainless steel tubes types

446 Stainless steel tubes types

  • Seamless / ERW / Welded 

 

 

Stainless steel 446 condenser tube length

Stainless steel 446 condenser tube length

  • Single random
  • Double random
  • Cut length.
ASTM A268 TP446 tubes forms

ASTM A268 TP446 tubes forms

  • Round
  • Square
  • Rectangular
  • Hydraulic Etc

 

 

AISI 446 cold drawn seamless tube schedule 

AISI 446 cold drawn seamless tube schedule 

  • SCH20
  • SCH30
  • SCH40
  • STD
  • SCH80
  • XS
  • SCH60
  • SCH80
  • SCH120
  • SCH140
  • SCH160
  • XXS
WNR 1.4762 heat exchanger tubes Swg & Bwg

WNR 1.4762 heat exchanger tubes Swg & Bwg

  • 10 Swg
  • 12 Swg
  • 14 Swg
  • 16 Swg
  • 18 Swg
  • 20 Swg.

Keep Largest Inventory Of ASME SA 268 TP446 tube in Various Form, Refer All Types

Types of 446 Stainless Steel Tube

ASTM A268 TP446 seamless tube

ASTM A268 TP446 seamless tube

SA268 TP446 welded tube

SA268 TP446 welded tube

446 SS coil tubing

446 SS coil tubing

Stainless steel 446 condenser tube

Stainless steel 446 condenser tube

Type 446 heater tubes

Type 446 heater tubes

WNR 1.4762 heat exchanger tubes

WNR 1.4762 heat exchanger tubes

UNS S44600 ERW tubes

UNS S44600 ERW tubes

AISI 446 cold drawn seamless tubes

AISI 446 cold drawn seamless tubes

SS 446 annealed tube

SS 446 annealed tube

ASTM A268 TP446 annealed tube

ASTM A268 TP446 annealed tube

446 Stainless steel seamless tube

446 Stainless steel seamless tube

SS 446 boiler tubing

SS 446 boiler tubing

446 SS Coil Tubing Equivalent

Grade UNS Number Euronorm Old British Swedish SS Japanese JIS
No Name BS En
446 S44600 1.4762 / 1.4763 – – – – –

Chemical Composition of INOX 446 Seamless Tubes

ASTM A268 TP446

C 0.2%

Si 0.75%

Mn 1.5%

P 0.040%
Cr 30.0%

S 0.030%

N 0.25%

Ni 0.50%

SA268 TP446 Welded Tubes Mechanical Properties

Grade Yield Strength 0.2% Proof min (MPa)/td> Tensile Strength min Elongation (% in 50 milimeter) min Hardness
Rockwell B (HR B) max Brinell (HB) max
446 275 485 20 92 201

Buy SS 446 Heat exchanger and Boiler tubes in Standards Or Custom Sizes for General Corrosion-Resisting Service

SUS 446 Tube Sizes

WT mm OD mm in. Sch Kg/meter
1.65 13.72 1/4 10S 0.50
2.24 13.72 1/4 40S 0.64
3.02 13.72 1/4 80S 0.81
1.65 17.15 3/8 10S 0.64
2.31 17.15 3/8 40S 0.86
3.20 17.15 3/8 80S 1.12
2.11 21.34 1/2 10S 1.02
2.77 21.34 1/2 40S 1.29
3.73 21.34 1/2 80S 1.65
2.11 26.67 3/4 10S 1.30
2.87 26.67 3/4 40S 1.71
3.91 26.67 3/4 80S 2.23
2.77 33.40 1 10S 2.13
3.38 33.40 1 40S 2.54
4.55 33.40 1 80S 3.29
6.352) 33.40 1 160 4.30
2.77 42.16 1¼ 10S 2.73
3.56 42.16 1¼ 40S 3.44
4.85 42.16 1¼ 80S 4.53
6.352) 42.16 1¼ 160 5.69
2.77 48.26 1½ 10S 3.16
3.68 48.26 1½ 40S 4.11
5.08 48.26 1½ 80S 5.49
2.77 60.33 2 10S 3.99
3.91 60.33 2 40S 5.52
5.54 60.33 2 80S 7.60
8.742) 60.33 2 160 11.29
3.05 73.03 2½ 10S 5.35
5.16 73.03 2½ 40S 8.77
7.01 73.03 2½ 80S 11.59
3.05 88.90 3 10S 6.56
5.49 88.90 3 40S 11.47
7.62 88.90 3 80S 15.51
11.132) 88.90 3 160 21.67
3.05 101.60 3½ 10S 7.53
5.74 101.60 3½ 40S 13.78
8.08 101.60 3½ 80S 18.92
3.05 114.30 4 10S 8.50
6.02 114.30 4 40S 16.32
8.56 114.30 4 80S 22.67
13.492) 114.30 4 160 34.05
6.55 141.30 5 40S 22.10
9.53 141.30 5 80S 31.44
15.882) 141.30 5 160 49.87
3.4 168.28 6 10S 14.04
7.11 168.28 6 40S 28.69
10.97 168.28 6 80S 43.21
14.27 168.28 6 120 54.75
18.262) 168.28 6 160 68.59
8.18 219.08 8 40S 43.20
12.7 219.08 8 80S 65.63
18.23 219.08 8 120 91.30
23.012) 219.08 8 160 112.97

Stainless Steel 446 Condenser Tube Physical Properties

Grade 446
Mean Coefficient of Thermal Expansion (m/m/0C) 0-1000C 9.9
0-3150C 11.4
0-5380C 11.6
Specific Heat 0-1000C (J/kg.K) 460
Density (kg/m3) 7500
Elastic Modulus (GPa) 200
Thermal Conductivity (W/m.K) at 1000C 24.9
at 5000C 28.7
Electrical Resistivity (n.m) 570

UNS S44600 Heater Tubes Creep Properties

1% Elongation1) for Rupture2) for
Temperature °C 1,000 h N/mm2 10,000 h N/mm2 1,000 h N/mm2 10,000 h N/mm2 100,000 h N/mm2
500 80 50 160 100 55
600 27.5 17.5 55 35 20
700 8.5 4.7 17 9.5 5
800 3.7 2.1 7.5 4.3 2.3
900 1.8 1.0 3.6 1.9 1.0

WNR 1.4762 Heat Exchanger Tubes Tolerance

OD Tolerance
4mm to 35mm +/- 0.08mm
35mm to 38mm +/- 0.15mm
38mm to 60mm +/- 0.20mm
60mm and above +/- 0.25mm

Dimension of SS 446 Tubing

Size (in) Transverse Areas (in2) mm2 Length of tubes (ft per sq. foot of surface) Diameter (in) mm Nominal Thickness (in) mm Number of Threads per inch of Screw Volume (ft3/ft) Weight
External Internal Steel External Surface (ft) Internal Surface (ft) External Internal (lb/ft) (kg/m)
1/8 0.13 0.06 0.07 9.43 14.20 0.405 0.27 0.07 27 0.0004 0.24 0.36
¼ 0.23 0.10 0.13 7.07 10.49 0.540 0.36 0.09 18 0.0007 0.42 0.63
3/8 0.36 0.19 0.17 5.66 7.75 0.675 0.49 0.09 18 0.0013 0.57 0.84
½ 0.55 0.30 0.25 4.55 6.14 0.840 0.62 0.11 14 0.0021 0.85 1.26
¾ 0.87 0.53 0.33 3.64 4.64 1.050 0.82 0.11 14 0.0037 1.13 1.68
1 1.36 0.86 0.49 2.90 3.64 1.315 1.05 0.13 11 ½ 0.0060 1.68 2.50
1 ¼ 2.16 1.50 0.67 2.30 2.77 1.660 1.38 0.14 11 ½ 0.0104 2.27 3.38
1 ½ 2.84 2.04 0.80 2.01 2.37 1.900 1.61 0.15 11 ½ 0.0141 2.72 4.04
2 4.43 3.36 1.08 1.61 1.85 2.375 2.07 0.15 11 ½ 0.0233 3.65 5.43
2 ½ 6.49 4.79 1.70 1.33 1.55 2.875 2.47 0.20 8 0.0333 5.79 8.62
3 9.62 7.39 2.23 1.09 1.25 3.500 3.07 0.22 8 0.0513 7.58 11.27
3 ½ 12.56 9.89 2.68 0.95 1.08 4.000 3.55 0.23 8 0.0687 9.11 13.56
4 15.90 12.73 3.17 0.85 0.95 4.500 4.03 0.24 8 0.0884 10.79 16.06
5 24.30 20.00 4.30 0.69 0.76 5.563 5.05 0.26 8 0.1389 14.61 21.74
6 34.47 28.89 5.58 0.58 0.63 6.625 6.07 0.28 8 0.2006 18.97 28.23
8 58.42 50.02 8.40 0.44 0.48 8.625 7.98 0.32 8 0.3552 28.55 42.49
10 90.76 78.85 11.90 0.36 0.38 10.750 10.02 0.37 8 0.5476 40.48 60.24
12 127.64 111.90 15.74 0.30 0.32 12.750 11.94 0.41 8 0.7763 53.60 79.77
14 153.94 135.30 18.64 0.27 0.28 14.000 13.13 0.44 8 0.9354 63.00 93.75
16 201.05 176.70 24.35 0.24 0.25 16.000 15.00 0.50 8 1.2230 78.00 116.08
18 254.85 224.00 30.85 0.21 0.23 18.000 16.88 0.56 8 1.5550 105.00 156.26
20 314.15 278.00 36.15 0.19 0.20 20.000 18.81 0.59 8 1.9260 123.00 183.05
24 452.40 402.10 50.30 0.16 0.17 24.000 22.63 0.69 8 2.7930 171.00 254.48
Supplier Of UNS S44600 Ferritic an Martensitic Stainless Steel Tubing With Custom Packaging and Marking in Mumbai

ASME SA 268 TP446 Tubes Marking

ASME SA 268 TP446 Tubes Marking
  • Standard ASTM No
  • Grade
  • Outer Diameter
  • Thickness
  • Length
  • Heat No
Offer WNR 1.4762 Coiled and Condenser tube With Various Surface Finish Like AP, BA etc.

AISI 446 ERW Tubes Surface Finish

Surface Finish Exterbal Surface(OD) Internal Surface(ID)
Roughness Average(RA) Roughness Average(RA)
μ inch μm μ inch μm
AP Annealed & Pickled 40 or Not defined 1.0 or Not defined Not defined Not defined
BA Beight Annealed 32 0.8 40,32,25,20 1.0,0.8,0.6,0.5
MP Mechanical Polish 32 0.8 40,32,25,20 1.0,0.8,0.6,0.5
EP Electro Polish 32 0.8 15,10,7,5 0.38,0.25,0.20;0.13