JIS G3459 SUS430TP Stainless Steel Seamless Pipe
Heat-Resistant Ferritic Stainless Steel Tube
JIS G3459 SUS430TP stainless steel seamless pipes are ferritic stainless steel tubes designed for corrosion-resistant and high-temperature service.
Manufactured according to JIS G3459, SUS430TP pipes are commonly used in:
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Heat exchangers
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Boiler components
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Exhaust systems
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Chemical processing
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Industrial piping systems
SUS430TP is a ferritic stainless steel grade offering good oxidation resistance and moderate corrosion resistance in mildly corrosive environments.
What Is JIS G3459?
JIS G3459 is a Japanese Industrial Standard covering stainless steel pipes used for corrosion resistance and high-temperature service.
It specifies:
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Chemical composition
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Mechanical properties
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Dimensional tolerances
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Manufacturing requirements
The designation “TP” stands for Tube / Pipe.
What Is SUS430TP?
SUS430TP is a ferritic stainless steel grade equivalent to Type 430 stainless steel.
Key Characteristics:
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Chromium content ~16–18%
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Non-hardenable by heat treatment
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Magnetic ferritic structure
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Good oxidation resistance
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Lower cost compared to austenitic grades
It is suitable for moderate corrosion environments and elevated temperature applications.
Chemical Composition (SUS430TP)
| Element | % |
|---|---|
| Carbon (C) | ≤ 0.12 |
| Silicon (Si) | ≤ 0.75 |
| Manganese (Mn) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 16.00–18.00 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 450 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 22% |
Dimensions & Supply Range
| Item | Specification |
|---|---|
| Standard | JIS G3459 |
| Grade | SUS430TP |
| Type | Seamless |
| Outside Diameter | 6 mm – 630 mm |
| Wall Thickness | 1 mm – 40 mm |
| Length | Random / Fixed Length |
| Surface | Pickled / Annealed |
(Custom sizes available upon request)
Advantages of SUS430TP Seamless Pipes
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Good resistance to oxidation at elevated temperatures
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Cost-effective alternative to austenitic stainless steels
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Stable ferritic microstructure
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Suitable for heat exchanger and boiler applications
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Good formability
Equivalent Grades of SUS430TP
SUS430TP is a ferritic stainless steel grade under JIS G3459, generally equivalent to Type 430 stainless steel in other international standards.
| Standard | Equivalent Grade |
|---|---|
| JIS | SUS430TP |
| ASTM / ASME | ASTM A312 TP430 |
| AISI | 430 |
| UNS | S43000 |
| EN | X6Cr17 |
| DIN | 1.4016 |
| ISO | X6Cr17 |
| GB (China) | 10Cr17 |
⚠ Note: Equivalent grades are for reference only. Mechanical properties and chemical composition limits may vary slightly depending on the governing standard.
Comparison Overview
SUS430TP vs AISI 430
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Both are ferritic stainless steels
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Chromium content approx. 16–18%
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Magnetic
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Good oxidation resistance
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Not suitable for severe chloride environments
Application Areas
SUS430TP stainless seamless pipes are widely used in:
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Automotive exhaust systems
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Industrial heating equipment
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Chemical equipment
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Food processing equipment (mild environment)
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Architectural structures
Equivalent Grades
| Standard | Grade |
|---|---|
| AISI | 430 |
| EN | X6Cr17 |
| DIN | 1.4016 |
(Equivalents may vary depending on specification requirements.)
Manufacturing Process
SUS430TP seamless pipes are produced through:
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Hot piercing
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Hot rolling or cold drawing
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Solution annealing
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Pickling and surface finishing
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Inspection and testing
Inspection & Certification
Available documentation:
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Mill Test Certificate (EN 10204 3.1)
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PMI testing
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Hydrostatic test
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Eddy current testing
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Third-party inspection (SGS, BV, TUV)
How to Order
Example:
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JIS G3459 SUS430TP Seamless Pipe, OD 60.3 mm × 5 mm WT, 6M Length
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SUS430TP Stainless Steel Seamless Tube, 2” SCH 40
Related Products
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JIS G3459 SUS304TP Stainless Pipe
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JIS G3459 SUS316TP Seamless Pipe
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ASTM A312 TP430 Stainless Pipe
JIS G 3459 SUS430TP Stainless Seamless Steel Pipes
