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

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

Product Description

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

ASTM A268 TP430 (UNS S43000) is a standard specification for seamless, ferritic stainless steel tube made from Grade 430 (16–18% chromium, low nickel, no molybdenum). When used as a heat exchanger tube, it is intended for non-code or low-pressure applications where the operating environment is free of chlorides, temperatures are below 400°C (750°F) to avoid 475°C embrittlement, and resistance to chloride stress corrosion cracking (SCC) is required, but high pitting/crevice corrosion resistance is not.

Key Differentiating Factors Among Ferritic Stainless Steel Grades

Ferritic stainless steels all have a body-centered cubic (BCC) structure, are magnetic, and contain little to no nickel. The main differences come from:

Chromium (Cr) content – affects corrosion resistance and oxidation resistance.
Stabilizing elements (Ti, Nb) – improve weldability and prevent intergranular corrosion.
Molybdenum (Mo) – greatly improves pitting/crevice resistance.
Carbon + Nitrogen – lower is better for toughness and formability.

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

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

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

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

Here are the key advantages of ferritic stainless steels (TP400 series, e.g., TP430, TP439, TP444) over austenitic stainless steels (TP300 series, e.g., TP304, TP316) – especially relevant for heat exchanger tubing and general industrial applications.

1. Superior Resistance to Chloride Stress Corrosion Cracking (SCC)

2. Lower Material Cost (No Nickel)

3. Higher Thermal Conductivity

4. Lower Coefficient of Thermal Expansion

5. Better Resistance to Galling & Wear

6. Magnetic (for Some Applications)

7. Resistance to Intergranular Corrosion (in Stabilized Grades)

Application

Because of the ASME restriction, TP430 seamless tubes are typically found in non-code or low-pressure heat exchangers such as:

Chemical plant preheaters (mild acids, not chlorides)
Heat recovery from flue gases (condensing economizers – but only if flue gas is dry)
Food processing (non-acidic, non-chloride media like hot water/steam)
Automotive oil coolers (closed loop, non-chloride)
Desuperheaters (steam to hot water)

ASTM A268 TP430 / UNS S43000 Ferritic Stainless Steel Seamless Tube 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

Nickel Alloy Steel Boiler Tube

Stainless Steel Boiler Tube

Duplex 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