ASTM A268 TP430 Ferritic Stainless Steel Seamless Pipe
Name：ASTM A268 TP430 Ferritic Stainless Steel Seamless Pipe
Certification：ISO, RoHS, IBR, AISI, ASTM, GB, EN, DIN, JIS
Shape：round
Technique：Cold Rolled/Hot Rolled
Surface Treatment：Sanded /Mirror/Hairline Brushed
Thickness：0.3-30mm
out Diameter：8-219mm
Length：5.8/6m or Custom
Stock：in Stock
Sample：Available
Transport Package：Standard Sea-Worthy Packing
Send E-mail:info@gneestainless.com
Tel:+8615824687445
Description
Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of astm a268 tp430 ferritic stainless steel seamless pipe in China. With abundant experience, we warmly welcome you to wholesale customized astm a268 tp430 ferritic stainless steel seamless pipe from our factory. For price consultation, contact us.
If you are looking for a cost-effective and corrosion-resistant solution for heat exchange and high-temperature applications, we can provide high-quality, globally exportable ASTM A268 TP430 ferritic stainless steel seamless heat exchanger tubes.
TP430 stainless steel round pipe is a classic ferritic stainless steel containing approximately 16-18% chromium and low carbon content. It offers good oxidation resistance, mild corrosion resistance, and resistance to stress corrosion cracking. TP430 seamless tubes typically have a tensile strength of ≥450 MPa and better thermal conductivity compared to austenitic stainless steel, making them particularly suitable for high-efficiency heat transfer systems.
Our ASTM A268 TP430 seamless heat exchanger tubes are manufactured using cold drawing and solution annealing processes, ensuring uniform wall thickness, smooth inner surface, and precise dimensional tolerances. This eliminates corrosion degradation in the heat-affected zone of welds and provides various surface finishes such as annealed and pickled/bright/polished. They are more cost-effective than austenitic 304 stainless steel tubes, offer high-temperature oxidation resistance up to 816℃, and a continuous operating temperature of 400–500°C. They are widely used in condensers, evaporators, and heat exchanger pipelines in chemical, food processing, power generation, and HVAC industries, as well as in mildly corrosive medium-temperature applications in petroleum refining.
Why is TP430 used in boilers instead of TP304?
TP430 stainless steel pipes have extremely high resistance to chloride stress corrosion cracking, while austenitic steels (304/316) are prone to failure due to this in boiler water circulation. TP430 has a thermal conductivity approximately 25%-30% higher than 304, resulting in higher heat exchange efficiency and less stress on the tube sheet during hot and cold cycles, thus reducing the risk of leakage at joints.
ASTM A268 TP 430 Tubes Specifications
| Specifications | : | ASTM A268 / SA 268 |
| Dimensions | : | ASTM, ASME |
| Size | : | 1/4″ (6.25mm) to 8″ (203mm), WT 0.02″ (0.5mm) to 0.5″(12mm) |
| Schedule | : | Sch 20, Sch 30, Sch 40, STD, Sch 80, XS, Sch 60, Sch 80, Sch 120, Sch 140, Sch 160, XXS |
| Specialized in | : | Large Diameter Size |
| Length | : | Single Random, Double Random & Cut Length. |
| Form | : | Round, Square, Rectangular, Hydraulic Etc |
| End | : | Plain End, Beveled End, Treaded |
Chemical Composition of ASTM A268 TP430 (wt.%)
| Element | C | Mn | P | S | Si | Cr |
|---|---|---|---|---|---|---|
| Limit | 0.12 max | 1.00 max | 0.040 max | 0.030 max | 1.00 max | 16.0–18.0 |
Mechanical Properties of ASTM A268 TP430 (Annealed Condition)
| Item | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| Requirement | 415 min | 240 min | 20 min | 190 max |
Physical Properties of TP430 Stainless Steel pipe
| Property | Value |
|---|---|
| Density | 7.8 g/cm³ (0.28 lb/in.³) |
| Melting Point | 1425–1510 °C (2600–2750 °F) |
| Specific Heat Capacity | 460 J/kg·K (0.11 Btu/lb·°F) at 0–100 °C (32 to 212 °F) |
| Electrical Resistivity | 0.60 μΩ·m at 20 °C |
| Magnetic Permeability | 600–1100 (Approximate) |
| Elastic Modulus | 200 GPa (29.0×10⁶ psi) |
| Thermal Diffusivity | 7.3 mm²/s |
ASTM A268 TP430 Tube Heat Treatment
| Maximum service temperatures, °C (°F) | ||
| AISI | Intermittent service | Continuous service |
| 430 | 870 (1600) | 815 (1500) |
HS Code of 430 Stainless Steel Welded Tube
| HS CODe | 7304113000 |
|---|
ASTM A268 TP430 Tube Price List
| Product Description | Price in USD |
|---|---|
| ASTM A268 TP430 Stainless Steel Tube Size: 6 mm x 0.5 mm | US $ 2.00 |
| S A268 TP430 Stainless Steel Tube Size: 12 mm x 1.0 mm | US $ 5.00 |
If you have a project requiring ASTM A268 stainless steel pipe, please feel free to place an order. GNEE has a large selection of popular products.
Will TP 430 rust in a boiler environment?
TP 430 contains 16%–18% chromium and offers good corrosion resistance. However, during boiler shutdowns, if corrosive condensate remains inside the tubes and nitrogen protection is not applied, slight pitting or red rust may appear on the surface. It performs very stably in dry air and freshwater circulation systems.
How can you ensure that the purchased SA 268 TP 430 piping is compliant?
Verify that the MTC (Material Test Certificate) references the ASME SA 268 standard.
Check that the heat number matches the marking on the pipe body.
Confirm that the certificate clearly lists data for tensile tests and flattening/flaring tests.
For export projects, verify compliance with the PED (Pressure Equipment Directive) or other relevant certifications.
ASME SA 268 TP 430 Boiler Tubes Quality Control
In accordance with SA 268/SA 1016, the following tests must be performed:
Hydrostatic Test: Ensures the tube is free from leaks under pressure.
Electromagnetic Testing (ET) or Ultrasonic Testing (UT): Used to detect internal cracks.
Flattening Test and Flaring Test: Verify the plasticity of the tubing material, ensuring it meets requirements for bending and tube expansion.
Hardness Test: Ensures the value does not exceed the standard limit (≤ 192 HBW).
Our Export Case Studies
Nitric Acid Transfer Pipeline Project for a European Fertilizer Plant
Material: ASTM A268 TP430 (UNS S43000)
Dimensions: OD 60.3 mm x Wall Thickness 3.91 mm (SCH 40S)
Process: Cold-drawn seamless; pickled and annealed condition
Application: Storage and transfer systems for concentrated nitric acid
Key Requirements: 100% hydrostatic testing; strict chemical composition verification (ensuring chromium content is close to the 18% upper limit)
Please find attached the material certificate for our 430 stainless steel.
High-quality sea freight packaging
Protection: 1.Inter paper available 2.PVC protecting film available
Export Packing: Waterproof paper, and steel strip packed. Standard Export,Seaworthy Package.Suit for all kinds of transport,or as required.
Customer visit and sign the order
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