Seamless stainless ferritic steel tubes 1.4510 / OH17T / X3CrTi17, 0H17T, AISI 430Ti

Seamless stainless ferritic steel tubes 1.4510 / OH17T / X3CrTi17, 0H17T, AISI 430Ti

These are seamless ferritic stainless steel tubes made from grade 1.4510 (also shown as X3CrTi17, AISI 430Ti and often listed locally as OH17T / 0H17T). They are ferritic stainless steels stabilised with titanium so they keep good corrosion resistance and dimensional stability after welding. The seamless form means the tube is produced without a longitudinal weld, giving consistent wall thickness and better pressure and mechanical integrity for many applications.

What this product is and what it’s used for

These tubes are part of the ferritic family of stainless steels - chromium-based, magnetic grades with low nickel content compared with austenitic stainless (eg 304/316). The titanium stabilisation binds carbon as titanium carbides, which reduces the risk of chromium carbide precipitation (sensitisation) during heating or welding. That makes 1.4510 / 430Ti a practical choice where moderate corrosion resistance and thermal stability are required, particularly for welded components and heat-exposed parts.

Typical applications and industries

  • HVAC and heat exchangers - flues, ducts and heating system components
  • Furnace and oven parts - liners, flue tubes and heat shields where stabilised steel helps prevent sensitisation
  • Appliance and domestic equipment - certain cooker or oven parts and decorative trims
  • Construction and architectural elements - cladding, trim and non-critical structural tubing
  • Automotive and transport - trim, brackets and some non-corrosive underbody components
  • General engineering and fabrication - workshop projects, mechanical tubing and assemblies
  • Light industrial equipment - where moderate corrosion resistance and good thermal conductivity are useful
  • Note: because ferritic grades have lower resistance to chloride-rich or strongly acidic environments, they are generally not recommended for long-term use in seawater or highly corrosive chemical processes - in those cases austenitic grades such as 304/316 (EN 1.4301 / 1.4404) are usually better suited.

    Key properties (what to expect)

  • Corrosion resistance: good in mildly corrosive atmospheres and at elevated temperatures, but lower than austenitic grades
  • Thermal stability: titanium stabilisation improves resistance to sensitisation during welding or heat exposure
  • Mechanical behaviour: moderate strength and good formability; not hardened by heat treatment
  • Magnetic: ferritic steels are magnetic, unlike common austenitic stainless grades
  • Cost-effective: typically less expensive than nickel-bearing austenitic stainless steels
  • Advantages and limitations

  • Advantages: seamless construction (no weld seam), consistent dimensions, good weldability with reduced sensitisation risk, lower cost than many austenitics, suitable for many heating and structural uses.
  • Limitations: lower general corrosion resistance vs 304/316, less suitable for chloride-rich or highly acidic environments; mechanical properties differ from austenitic grades and may affect forming and machining choices.
  • Who should consider these tubes?

    Engineers, procurement teams, fabricators, HVAC contractors, appliance manufacturers, automotive suppliers and keen workshop hobbyists looking for a robust, cost-effective ferritic stainless tube for welded assemblies, heat-related applications or architectural trim. If you need tubes for aggressive chemical exposure, offshore or permanent outdoor use in marine environments, ask our technical team for a more suitable alternative.

    Naming and equivalents

    Common names and synonyms you may see:

  • EN / European: 1.4510 (X3CrTi17)
  • US / AISI: AISI 430Ti
  • Local / trade: OH17T, 0H17T
  • These labels all describe essentially the same ferritic, titanium‑stabilised stainless grade. When comparing with other grades, remember that 430Ti offers reduced nickel content and improved stability around welds versus unstabilised ferritic steels, but lower corrosion resistance than austenitic 304/316 families.

    Practical notes for fabrication and selection

  • Seamless tubes are preferred when uniform wall strength or pressure resistance matters.
  • Titanium stabilisation helps prevent sensitisation during welding, but good practice in cutting, forming and welding is still important to achieve best corrosion performance.
  • For highly corrosive services (chlorides, strong acids) consider austenitic alternatives or consult our technical team for guidance.
  • Need help choosing or ordering?

    If you are uncertain whether Seamless stainless ferritic steel tubes 1.4510 / AISI 430Ti are the right choice for your project, our sales and technical advisors can help match grade, tube dimensions and finish to your application - from small garage projects through construction, automotive parts, HVAC systems and light industrial uses. Contact us with your operating environment and mechanical requirements for tailored advice.

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