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ASTM A268 TP430 / UNS S43000 Ferritic Stainless Steel Seamless Tube Heat Exchanger Tube
ASTM A268 TP430 / UNS S43000 Ferritic Stainless Steel Seamless Tube Heat Exchanger Tube
ASTM A268 TP430 / UNS S43000 Ferritic Stainless Steel Seamless Tube Heat Exchanger Tube
ASTM A268 TP430 / UNS S43000 Ferritic Stainless Steel Seamless Tube Heat Exchanger Tube
ASTM A268 TP430 / UNS S43000 Ferritic Stainless Steel Seamless Tube Heat Exchanger Tube
ASTM A268 TP430 / UNS S43000 Ferritic Stainless Steel Seamless Tube Heat Exchanger Tube
Specifications
Brand Name :
YUHONG
Model Number :
ASTM A268 TP430 Stainless Steel Seamless Tube
Certification :
ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Place of Origin :
CHINA
MOQ :
1000kgs
Payment Terms :
L/C,T/T
Delivery Time :
7 DAYS
Packaging Details :
Ply-wooden Case /Iron Case/ Bundle with plastic Cap
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
High Light :
ASTM A268 TP430 Ferritic Stainless Steel Tube, Seamless Heat Exchanger Tube
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:

  1. Chromium (Cr) content – affects corrosion resistance and oxidation resistance.

  2. Stabilizing elements (Ti, Nb) – improve weldability and prevent intergranular corrosion.

  3. Molybdenum (Mo) – greatly improves pitting/crevice resistance.

  4. 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

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

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Product Detail
Brand Name :
YUHONG
Model Number :
ASTM A268 TP430 Stainless Steel Seamless Tube
Certification :
ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Place of Origin :
CHINA
MOQ :
1000kgs
Payment Terms :
L/C,T/T
Contact Supplier
ASTM A268 TP430 / UNS S43000 Ferritic Stainless Steel Seamless Tube Heat Exchanger Tube
ASTM A268 TP430 / UNS S43000 Ferritic Stainless Steel Seamless Tube Heat Exchanger Tube
ASTM A268 TP430 / UNS S43000 Ferritic Stainless Steel Seamless Tube Heat Exchanger Tube

YUHONG HOLDING GROUP CO., LTD

Verified Supplier
3 Years
ningbo
Since 1990
Business Type :
Manufacturer, Importer, Exporter, Trading Company, Seller, Other
Main Products :
Stainless Steel Heat Exchanger Tube, Studded Tube, Duplex Stainless Steel Heat Exchanger Tube
Total Annual :
50M-70M
Employee Number :
50~800
Certification Level :
Verified Supplier
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