Outokumpu 1.4510
Type 17Cr-Ti stainless steel: EN 1.4510, AISI 439
Applications
- Automotive exhaust system parts: mufflers, pipes, catalytic converters, support parts.
- Domestic appliance internal parts
Welding
- Conventional welding methods are applicable, austenitic 308L and ferritic 430LNb or 439 filler metals can be used.
- Austenitic filler metal will result in more a ductile weld.
- Ferritic filler metals are recommended to use in sulphuric environments and under thermal stresses.
- Shielding gases should be based on Ar/He, mixed with maximum of 2 % oxygen or carbon dioxide to improve the arc stability. Hydrogen and nitrogen additions are forbidden.
- Heat input should be minimized to reduce the grain coarsening effect in the heat-affected zone.
- Titanium stabilization prevents sensitization effect in the heat-affected zone.
- Adequate corrosion resistance in the welded joint is achieved using either mechanical descaling or pickling.
Fabrication
- Grade 1.4510 can be formed using typical forming processes like folding, bending, drawing, etc.
- It has higher minimum proof strength than standard austenitic stainless steel grade 1.4301 / AISI 304 in combination with lower work hardening behavior.
- Due to the stabilization, the r-value is higher compared to the non-stabilized ferritic stainless steel such as 1.4016.
- These characteristics mean excellent deep-drawability and other forming related properties.
Corrosion resistance
- Outokumpu produces grade 1.4510 with a typical chromium content of 17 wt-%.
- Titanium alloying reduces sensitivity for intergranular corrosion.
- Oxidation resistance is good up to 950°C.
- Relatively high chromium content improves resistance to crevice corrosion
- Grade 1.4510 is not susceptible to chloride induced stress corrosion cracking.
- The best material performance is reached usually with the help of adequate design and regular cleaning during use (if applicable)
Allgemeine Eigenschaften
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Technical Datasheet (English)
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