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ASTM A268 TP430 Stainless Steel Tube UNS S43000 Seamless Steel Heat Exchanger Tube

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ASTM A268 TP430 Stainless Steel Tube UNS S43000 Seamless Steel Heat Exchanger Tube

Brand Name:	YUHONG
Model Number:	ASTM A268 TP430 Stainless Steel Seamless Tube
MOQ:	1000kgs
Packaging Details:	Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Payment Terms:	L/C,T/T

Detail Information

Product Description

Ratings & Reviews

Detail Information

Place of Origin:

CHINA

Certification:

ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008

Product Name:

Stainless Steel Tube

Standard:

ASTM A268, ASME SA268

Material:

TP430 , UNS S43000

OD:

1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", Etc.

Thickness:

BWG10-25

Length:

Single Random, Double Random & Cut Length

End:

Plain End, Beveled End

Highlight:

ASTM A268 TP430 Stainless Steel Tube, Seamless Steel Heat Exchanger Tube

Product Description

ASTM A268 TP430 / UNS S43000 Ferretic Stainless Steel Seamless Tube Heat Exchanger Tube

ASTM A268 TP430 / UNS S43000 is a ferritic stainless steel seamless tube for heat exchangers, containing 16–18% Cr and very low Ni (≤0.75%). It is fundamentally an economical, high-temperature oxidation-resistant tubing without nickel stabilization.

Engineers select these tubes only when the operating environment aligns with their unique strengths and strictly avoids their fatal weaknesses. The decision is rarely based on "best performance" but on "best fit for a narrow, specific niche."

How to choose right materials of A268 ferritic and martensitic tube?

Grade (UNS)	Key Feature	When to Consider It	When to Avoid It
TP409 (S40900)	Cheap, Ti-stabilized	Low-cost exhaust tubes, mufflers, or dry flue gas < 650°C.	Any pressure part or corrosive condensate.
TP430 (S43000)	Base grade, high Cr (16-18%)	Dry hot air/gas up to 870°C, nitric acid service, strong caustic (NaOH). Low-cost, non-welded heat exchanger bundles.	Any welding; any aqueous chlorides; any low temp.
TP439 (S43035)	Ti-stabilized (improved weldability)	When welding is required but you still need 430-level oxidation resistance. Used in automotive exhaust heat exchangers and welded recuperators.	Chloride pitting environments (same as 430).
TP444 (S44400)	Mo-stabilized (18Cr-2Mo)	Slightly wet environments with mild chlorides (e.g., potable water, low-chloride condensate). Has better pitting resistance than 316L in some cases.	High-chloride seawater or strong reducing acids.

Equivalent Grade of ASTM A268 TP430 Stainless Steel Tube UNS S43000 Seamless Steel Heat Exchanger Tube

STANDARD	WERKSTOFF NR.	UNS	JIS	KS
TP430	1.4016	S43000	SUS430	STS430

Chemical Composition % of ASTM A268 TP430 Stainless Steel Tube UNS S43000 Seamless Steel Heat Exchanger Tube

C	Mn	P	S	Si	Cr
≤0.12%	≤1.00%	≤0.040%	≤0.030%	≤1.00%	16.0%~18.0%

Mechanical Properties of ASTM A268 TP430 Stainless Steel Tube UNS S43000 Seamless Steel Heat Exchanger Tube

Grade	Tensile Strength	Yield Strength	Elongation	Hardness
TP430	≥415 MPa	≥240 MPa	≥20%	≤190 HB (Brinell)

Application

Refineries / Petrochemical: Air preheater tubes (dry flue gas), reformer outlet pigtails (dry H₂-rich gas).
Power Plants: Boiler air heaters, recuperators in gas turbines.
Chemical Processing: Concentrated sulfuric acid (93-98%) coolers, nitric acid condensers, caustic evaporator tubes (NaOH).
Automotive / Marine: Exhaust gas recirculation (EGR) coolers (where condensate is managed).

ASTM A268 TP430 Stainless Steel Tube UNS S43000 Seamless Steel Heat Exchanger Tube 0

Ratings & Review

Overall Rating

4.0

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

33%

4 stars

33%

3 stars

33%

2 stars

1 stars

All Reviews

Marcus

Belize Jan 19.2026

Helpful (1)

It's genuine 321H — titanium-stabilized, so no worries about sensitization or intergranular corrosion during welding. Our welder said it welded nicely with no cracking.

B*a

South Africa Dec 9.2025

Helpful (2)

Been running about 6 months now in cyclic service. No leaks, no failures. Heat transfer still where it should be.

Salem

Oman Sep 24.2025

Helpful (2)

We checked a few before installation — wall thickness consistent, roundness good. Welded in without problems.

Tags:

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Boiler Tube

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Stainless Steel Boiler Tube

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Fired Heater Parts

Baffle Plate

Tubesheet

Studded Tube

Solid Fin Tube

Serrated Finned tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube

Copper Alloy Steel Heat Exchanger Tube

Titanium Alloy Steel Heat Exchanger Tube

Alloy Steel Heat Exchanger Tube

U Bend Heat Exchanger Tube

Carbon Steel Heat Exchanger Tubes

Boiler Tube

Nickel Alloy Steel Boiler Tube

Stainless Steel Boiler Tube

Duplex Stainless Steel Boiler Tube

Alloy Steel Boiler Tube

Carbon Steel Boiler Tube

Fired Heater Parts

Baffle Plate

Tubesheet

products details

Studded Tube

Solid Fin Tube

Serrated Finned tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube