Packaging Details :Ply- Wooden Case/Plastic Bag / Plastic Cap
Tube Type :Welded or Seamless
Outside Diameter :1/4"- 8"-6.25mm -203mm
Wall Thickness :0.02"-0.5"-0.5mm-12mm
Application :Heat Exchanger/Condenser/Boiler
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ASTM A268 TP430 Ferritic and Martensitic Seamless Tube For General Service
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ASTM A268 is Standard specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service, the grades contain TP410, TP405, TP420, TP430, TP430Ti, TP403, TP409, TP444, TP439 and TP446, it covers standard specification for a number of grades of nominal-wall-thickness, welded ferritic and martensitic stainless steel tubing for general corrosion-resisting and high-temperature service, ASME SA268 is alternative standard.
The tubes shall be made by the seamless or welded process with no filler metal added, tubes shall be reheated to a temperature of 1200.F [650.C] or higher and cooled to meet the requirements of this specification, All tubes shall be free of excessive mill scale, suitable for inspection. A slight amount of oxidation will not be considered as scale.
ASTM A268 TP410, TP430, TP439 Chemical Composition
The steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, aluminum, copper, nitrogen, titanium, and columbium, most of these grades are commonly characterized by being ferromagnetic.
Grade:
TP410
TP430
TP439
UNS
S41000
S43000
S43035
C, Max
0.15
0.12
0.07
Mn,Max
1.00
1.00
1.00
P, Max
0.04
0.04
0.040
S, Max
0.03
0.03
0.030
Si, Max
1.00
1.00
1.00
Ni
…
…
0.50max
Cr
11.5-13.5
16.0-18.0
17.00-19.00
Mo
…
…
…
Al
…
…
0.15
Cu
…
…
…
N
…
…
0.04
Ti
…
…
0.20+4(C+N)Min, 1.10max
ASTM A268 Stainless Steel Tubing Sizes Tolerance
Variations in outside diameter, wall thickness, and length from those specified shall not exceed the amounts prescribed below.
Outside Diameter, In.[Mm]
OD Tolerance, In.[Mm]
Wall Thickness, %
Thin Wall Tubes
Up To1⁄2, [12.7], Excl
±0.005 [0.13]
±15
1⁄2 To 11⁄2 [12.7 To 38.1], Excl/Td>
±0.005 [0.13]
±10<
Less Than 0.065 In. [1.6 Mm] Nominal
11⁄2 To 31⁄2 [38.1 To 88.9], Excl
±0.010 [0.25]
±10
Less Than 0.095 In. [2.4 Mm] Nominal
31⁄2 To 51⁄2 [88.9 To 139.7], Excl
±0.015 [0.38]
±10
Less Than 0.150 In. [3.8 Mm] Nominal
51⁄2 To 8 [139.7 To 203.2], Incl
±0.030 [0.76]
±10
Less Than 0.150 In. [3.8 Mm] Nominal
TP410, TP430 And TP439 Properties
The steel shall conform to the following tensile properties: tensile strength, yield strength, and elongation.
Grade
Tensile Strength, Min, Ksi [MPa]
Yield Strength, Min, Ksi [MPa]
ELONGATION. MIN, %
TP410
55 [380]
30 [205]
20
TP430
60 [415]
35 [240]
20
TP439
60 [415]
30 [205]
20
ASTM A268 TP430 Ferritic and Martensitic Seamless Cold Drawn Tube For General Service Images
