ASTM A268 TP439 Welded Tube
The Stainless Steel Welded Tube ASTM A268 TP439 is a high-quality, durable tubing solution engineered for demanding applications. Manufactured from TP439 stainless steel, this tube offers excellent corrosion resistance and heat tolerance, making it ideal for environments exposed to high temperatures and corrosive elements. The TP439 grade, known for its superior formability and weldability, is particularly suited for automotive exhaust systems, heat exchangers, and various industrial uses. Our ASTM A268 TP439 welded tubes are precision-crafted to meet stringent industry standards, ensuring consistent performance and longevity. They are available in various sizes and thicknesses to accommodate a wide range of applications.
ASTM A268 TP439 Stainless Steel Welded Tubes
Outside Diameter: 6-203mm
Wall Thickness: 0.5-25mm
Length :Up to 25m
Standard: ASTM A268, ASME SA268, EN
Grade: TP410/TP405/TP420/TP430/TP430Ti/TP403/TP409/TP444/TP439/TP446,etc.
Delivery Condition: Pickled, Polished, Bright Annealed
Technique Seamless/Welded
Application: Heat Exchanger, Heater, Condenser, Machining, Bearing Machining, API Service…
Marking: LOGO, Standard, Grade, Size, Heat Number.
Package: Woven bag, wooden case, or as per customer's requirement.
Quality Requirement Mill Test Certificate (EN 10204/3.1); Third Part Inspection is acceptable.
Ferritic and Matensitic Stainless Steel Tube |
Standard |
Steel Grade |
Chemical Composition(%) |
C |
Mn |
Si |
P |
S |
Cr |
A/SA268 |
TP405 |
≤ 0.08 |
≤ 1.00 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
11.50~14.50 |
Ni≤ 0.50 Al:0.10~0.30 |
A/SA268 |
TP410 |
≤ 0.15 |
≤ 1.00 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
11.50~13.50 |
A/SA268 |
TP410S |
≤ 0.08 |
≤ 1.00 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
11.50~13.50 |
A/SA268 |
TP430 |
≤ 0.12 |
≤ 1.00 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
16.00~18.00 |
A/SA268 |
TP430Ti |
≤ 0.10 |
≤ 1.00 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
16.00~19.50 |
Ni≤ 0.75 Ti: 5C~0.75 |
A/SA268 |
TP446 |
≤ 0.20 |
≤ 1.50 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
23.00~27.00 |
Ni≤ 0.75 N: ≤ 0.25 |
A/SA268 |
TP409 |
≤ 0.08 |
≤ 1.00 |
≤ 1.00 |
≤ 0.045 |
≤ 0.030 |
10.50~11.70 |
Ni≤ 0.50 Ti: 6C~0.75 |
A/SA268 |
TP439 |
≤ 0.07 |
≤ 1.00 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
17.00~19.00 |
Ni≤ 0.50 N: ≤ 0.04 Ti: 0.2+ 4(C+N)~1.1 |
A/SA268 |
TP444 |
≤ 0.025 |
≤ 1.00 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
17.50~19.50 |
Ni≤ 1.00 Mo: 1.75~2.5 (Ti+Cb): 0.2+ 4(C+N)~0.8 N:≤ 0.035 |
A/SA756/268 |
440C |
0.95~1.10 |
≤ 1.00 |
≤ 1.00 |
≤ 0.025 |
≤ 0.025 |
16.00~18.00 |
Mo: 0.4~0.7 |
A/SA693 |
17-4PH |
≤ 0.07 |
≤ 1.00 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
15.50~17.50 |
Ni: 3.00~5.00 Cu: 3.0~5.0 Nb: 0.15~0.45 |
GOST9941-81 |
15Cr25Ti |
≤ 0.15 |
≤ 0.80 |
≤ 1.00 |
≤ 0.035 |
≤ 0.025 |
24.00~27.00 |
Ti:5C~0.90 |
API 5CT |
L80/9Cr |
≤ 0.15 |
0.30~0.60 |
≤ 1.00 |
≤ 0.020 |
≤ 0.010 |
8.00~10.00 |
Mo: 0.90~1.10 |
API 5CT |
L80/13Cr |
0.15~0.22 |
0.25~1.00 |
≤ 1.00 |
≤ 0.020 |
≤ 0.010 |
12.0~14.0 |
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Standard |
Steel Grade |
Mechanical Properties |
Elongation |
Hardness |
|
|
|
|
Y.S. (MPa) |
T. S. (MPa) |
(%) |
(HRB) |
|
|
A/SA268 |
TP405 |
≥ 415 |
≥ 205 |
≥ 30 |
≤ 85 |
|
|
A/SA268 |
TP410 |
≥ 415 |
≥ 205 |
≥ 30 |
≤ 85 |
|
|
A/SA268 |
TP410S |
≥ 415 |
≥ 205 |
≥ 30 |
≤ 85 |
|
|
A/SA268 |
TP430 |
≥ 415 |
≥ 205 |
≥ 30 |
≤ 85 |
|
|
A/SA268 |
TP430Ti |
|
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|
|
|
A/SA268 |
TP446 |
≥ 415 |
≥ 205 |
≥ 30 |
≤ 85 |
|
|
A/SA268 |
TP409 |
≥ 415 |
≥ 205 |
≥ 30 |
≤ 85 |
|
|
A/SA268 |
TP439 |
≥ 380 |
≥ 205 |
≥ 22 |
≤ 80 |
|
|
A/SA268 |
TP444 |
≥ 415 |
≥ 220 |
≥ 22 |
≤ 81 |
|
|
A/SA756/268 |
440C |
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A/SA693 |
17-4PH |
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GOST9941-81 |
15Cr25Ti |
≥ 415 |
≥ 205 |
≥ 30 |
≤ 85 |
|
|
API 5CT |
L80/9Cr |
≥ 655 |
≥ 552 |
≥ 20 |
≤ 23HRC |
|
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API 5CT |
L80/13Cr |
≥ 655 |
≥ 552 |
≥ 20 |
≤ 23HRC |
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Size Tol. (ASTM A1016) |
Dimension(D) |
Wall thickness(S) |
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|
(mm) |
Tolerance(mm) |
(mm) |
Tolerance(mm) |
|
|
|
Cold Drawn/Cold Rolled Tube |
<25.4 |
+/- 0.1 |
≤38.1 |
+20%~0 |
|
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|
25.4~38.1 |
+/- 0.15 |
|
|
|
>38.1~<50.8 |
+/- 0.2 |
>38.1 |
+22%~0 |
|
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50.8~<63.5 |
+/- 0.25 |
|
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|
63.5~<76.2 |
+/- 0.3 |
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Size Tol.for pipes per ASTM A530 |
|
Products |
OD |
WT |
Length |
|
Inch |
MM |
Inch |
MM |
Ft max. |
M max. |
|
Tube |
1/2"-3" |
12.0-76.2 |
0.02"-0.5" |
0.5-12.0 |
105' |
32 |
|
Pipe |
NPS1/2"-6" |
21.34-168.3 |
Sch10-Sch80 |
2.11-12.7 |
98' |
30 |
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