Outokumpu 4622 presentation

Transcription

1 Outokumpu 4622 presentation The new 21Cr stainless steel for the 21 st century from Outokumpu Juha Kela Stainless Coil EMEA R&D Tornio Outokumpu

2 Outline 1. Outokumpu 4622, new 21%Cr ferritic 2. More information Outokumpu 4622 presentation

3 Outokumpu 4622 New high chromium ferritic stainless steel High corrosion-resistant Good deepdrawability Outokumpu 4622 presentation

4 Why ferritic stainless steels with higher chromium contents Global trend The use of ferritic stainless steels is growing Ferritic stainless steel grades are moving into more demanding applications, requiring higher chromium contents Competitive advantage Competitive and stable price Attractive properties Moderate to good corrosion resistance Moderate to good weldability Excellent machinability Good formability Outokumpu 4622 presentation

5 Stainless steel global trend Stainless steel production on by grade category by ISSF (International Stainless Steel Forum) Others incl. Dublex grades Cr-grades (Ferritic, Martensitic) CrMn-grades Austenitic 300 series Source: Outokumpu 4622 presentation

6 Typical ferritic stainless steel grades ~21% Cr / Nb / Ti ~30% Cr / ~4% Mo / Ti / Nb EN AISI 447 +Cr / +Mo ~18% Cr / Nb / Ti ~16% Cr / Ti ~16% Cr / Nb ~11% Cr / Ti Outokumpu 4622 EN Cr EN AISI 441 EN AISI 439 EN ASTM - EN ASTM 409 +Cr / +Nb / +Ti Available in Tornio +Ti Available in Tornio +Nb +Ti Available in Tornio Available in Tornio +Mo EN ASTM 430 +Cr EN ASTM S40977 ~18% Cr / ~2% Mo / Ti / Nb EN ASTM 434 ~16% Cr ~11% Cr +Ti EN ASTM 444 EN ASTM - +Cr / +Mo ~17% / ~1% Mo ~17% / ~1% Mo / Ti Available in Tornio Available in Tornio Available in Tornio Ferritic high temperature grades with improved heat and creep resistance contain usually higher amounts of silicon and aluminium. Their chromium content may vary between 6% and 24%. Corrosion resistance Outokumpu 4622 presentation

7 4622 Background Phase This product is in a late development and commercializing phase, and therefore information given may still be subject to change Fulfils also ASTM A240 UNS S44330 requirements EN number registered for the new 21%Cr ferritic grade EN standardization work on-going Customers We are seeking for more customers, who are willing to work with us and to discuss with us about the performance of our grade in their processes and applications Outokumpu 4622 presentation

8 4622 Essential features High corrosion resistance 21% Cr content + 0.4% Cu + stabilization Comparable to common austenitic grades (304) and (304L), and even superior in certain environments Enhanced deep-drawability High R-value and limiting drawing ratio (LDR) makes this grade ideal for deep-drawing applications Decreased roping degree Almost roping free, decreased polishing need after forming Competitive stable price Excellent cost stability when compared to Ni alloyed austenitic stainless steel grades and Mo alloyed acid-proof grades Good weldability and machinability Resistant to chloride induced stress corrosion cracking Outokumpu 4622 presentation

9 4622 In general Substitute for 3O4/304L Designed for wide range general purposes Wide range of potential customers & solutions Substitute more expensive austenitic 4301/4307 (304/304L) Upgrade potential for e.g. ferritic 4509 (441) Outokumpu 4622 presentation

10 Chemical composition C N Cr Mo Ni Cu Stabilization Outokumpu 4622* 0,02 0, ,4 Ti+Nb Mechanical properties Proof stress MPa Tensile strength MPa Elongation % Hardness HB30 Outokumpu 4622* EN ** Min Min 22 S44330 req. ASTM-A240 Min 205 Min 390 Min 22 Max 187 *Typical values ** Preliminary values Outokumpu 4622 presentation

11 Corrosion resistance calculated PRE value Localized pitting resistance is comparable to common austenitic grades (304) and (304L), and even superior in certain environments up to (316) is superior to Outokumpu 4622 Test sequence: 0.2 M of NaCl at RT Outokumpu 4622 presentation

12 Corrosion resistance - cyclic salt spray 4622 before test 4622 after 7 days Outokumpu 4622 presentation

13 Corrosion resistance - cyclic salt spray Typical austenitic 304L and 316L after 7 days Samples were in the same chamber when the new 4622 was tested Typical 304L after 7 days Typical 316L after 7 days Outokumpu 4622 presentation

14 Improved deep drawability High normal R-value and Limiting Drawing Ratio (LDR) makes this grade ideal for deep-drawing applications. R-value LDR Erichsen Austenitic Outokumpu Cr Ferritic* * Typical data, 0.6 mm sheet thickness Swift-cup test (LDR) Erichsen test Outokumpu 4622 presentation

15 Improved R-value Higher normal R-value indicates improved deep-drawability Outokumpu 4622 presentation

16 Decreased roping degree - Roping Index (RI) * Almost ridging free RI<1 = less polishing Higher RI-value indicate higher roping degree during forming (more polishing needed) < 1 = Ridging free Outokumpu 21%Cr (EN ) Typical 21%Cr Outokumpu 4016 (430) Typical 4016 (430) Outokumpu 4622 presentation *Method developed in Tornio Research Centre

17 Good weldability Stabilization prevents the precipitation of Cr carbides avoiding intergranular corrosion in welds Adequate toughness and ductility in sheet thicknesses Pitting resistance of autogenous weld is similar to that of the base metal Ground #600 grit Base metal EN TIG weld Intergranular corrosion test EN ISO (Strauss-test) for autogenous weld: passed. Outokumpu 4622 presentation

18 4622 Impact 4622 compared 304/304L Competitive stable price Similar or higher corrosion resistance Better deep drawability Higher R-value and LDR Outokumpu 4622 presentation

19 4622 Pricing indicator Alloy Surcharges 4622 and 4307 (304L) surcharge difference 635 /t (June 2014) Outokumpu 4622 presentation

20 4622 Availability Please make free to contact to check real-time availability Dimensions and properties can be tuned according to your needs Outokumpu 4622 presentation

21 Outline 1. Outokumpu 4622, new 21%Cr ferritic 2. More information Outokumpu 4622 presentation

22 Outokumpu.com Outokumpu 4622 presentation

23 Stainless Steel World, Feb/2014 Outokumpu 4622 presentation

24 Press release Outokumpu 4622 presentation

25 Minerals & Metals Review - June 2014 Issue - Digital Edition - Outokumpu Story Outokumpu 4622 presentation

26 Our vision A world that lasts forever. We believe in a world that is durable, sustainable, efficient, and designed to last forever. The world deserves innovations that can stand the test of time and are ready to be born again at the end of their life cycle. Our materials are vital in enabling a sustainable world with economic prosperity. Outokumpu 4622 presentation