François Weisang-Hoinard Special Coil Nyby KN Weisang-Hoinar · PDF fileLes aciers...

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Transcript of François Weisang-Hoinard Special Coil Nyby KN Weisang-Hoinar · PDF fileLes aciers...

  • Les aciers inox duplex

    Matriau2014

    Franois Weisang-HoinardSpecial Coil NybyOutokumpu

    Date: 25 Novembre 2014

  • 3/3/2015 2

    Les aciers inox martensitiqueso Haut carbone

    Les aciers inox ferritiqueso Bas Carbone & Azote, (Mo)

    Les aciers inox austnitiqueso Bas Carbone, Ni > %8, ( Mo & N)

    Les diffrents types daciers inoxydables

    %Cr > 11,5%

    Rsistance la corrosion

    Les aciers inox austno-ferritiques ou duplex

  • Duplex stainless steels: The smart choice!

    Duplex Duplex: Exemples

    The duplex business case Conclusions

  • 3/3/2015Presentation title, Speaker name Confidential information 4

    Un duplex a une structure austno-ferritique

    La rpartition est approximativement de 50% ferrite and 50% austenite

    Les Duplex combinent la plupart des avantages des inoxferritiques et austnitiques

    La microstructure duplex apporte de hautes rsistancesmcaniques et une bonne rsistance la corrosion fissurante

    Quest-ce quun acier inox Duplex?

    Duplex microstructure

    Austenitic microstructure

  • Caractristiques

    Bonne resistance la piqration et la corrosion caverneuse

    Haute rsistance SCC (Stress Corrosion Cracking) et fatigue corrosion

    Proprits mcaniquesleves

    Bonne rsistance la Fatigue

    Haute absorption dnergie Haute rsistance lusure Faible coefficient

    dallongement Bonne soudabilit et

    aptitudes lusinage

  • Steel name EN ASTM/UNS C N Cr Ni Mo Other

    LDX 2101 1.4162 S32101 0.03 0.22 21.5 1.5 0.3 5Mn

    2304 1.4362 S32304 0.02 0.10 23 4.8 0.3 -

    LDX 2404 1.4662 S82441 0.02 0.27 24 3.6 1.5 3Mn

    2205 1.4462 S32205 0.02 0.17 22 5.7 3.1 -

    4404 1.4404 316L 0.02 - 17.2 10.1 2.1 -

    4436 1.4436 316 0.04 - 16.9 10.7 2.6 -

    904L 1.4539 904L 0.01 - 20 25 4.3 1.5Cu

    Elments dalliages des Duplex

    PRE : % Cr + 3.3%Mo + 16%N similaire aux inox austnitiques

    3/3/2015Duplex for demanding applications/ Lena Wegrelius 6

    Importance du rapport Ferrite /Austnite

    Teneurs en Ni & Mo diminuent lextra alliage

  • Steel name EN ASTM/UNS C N Cr Ni Mo Other

    LDX 2101 1.4162 S32101 0.03 0.22 21.5 1.5 0.3 5Mn

    2304 1.4362 S32304 0.02 0.10 23 4.8 0.3 -

    LDX 2404 1.4662 S82441 0.02 0.27 24 3.6 1.5 3Mn

    2205 1.4462 S32205 0.02 0.17 22 5.7 3.1 -

    4404 1.4404 316L 0.02 - 17.2 10.1 2.1 -

    4436 1.4436 316 0.04 - 16.9 10.7 2.6 -

    904L 1.4539 904L 0.01 - 20 25 4.3 1.5Cu

    Steel name EN ASTM/UNS C N Cr Ni Mo Other

    LDX 2101 1.4162 S32101 0.03 0.22 21.5 1.5 0.3 5Mn

    2304 1.4362 S32304 0.02 0.10 23 4.8 0.3 -

    EDX 2304 1.4362 S32304 0.02 0.18 23.8 4.3 0.5 -

    LDX 2404 1.4662 S82441 0.02 0.27 24 3.6 1.5 3Mn

    2205 1.4462 S32205 0.02 0.17 22 5.7 3.1 -

    2507 1.4410

    4404 1.4404 316L 0.02 - 17.2 10.1 2.1 -

    4436 1.4436 316 0.04 - 16.9 10.7 2.6 -

    904L 1.4539 904L 0.01 - 20 25 4.3 1.5Cu

    Optimisation de la composition chimique

    PRE : % Cr + 3.3%Mo + 16%N de 25,6 28

    3/3/2015Duplex for demanding applications/ Lena Wegrelius 7

    Ajustement du Ni pour contrler la structure ferrite austnite

    Conforme : ASTM S32304& EN 1.4362

  • 3/3/2015Presentation title, Speaker name Confidential information 8

    Positionnement des duplexExcellentes combinaisons entre rsistance mcaniques et rsistance la

    corrosion

    600

    550

    500

    450

    400

    350

    300

    250

    200

    150

    Dup

    lex

    Aust

    entic 4307

    4404

    4436

    4438

    4439

    904L

    254 SMO

    4565

    LDX 2101

    2304

    2205

    2507LDX 2404

    Corrosion Resistance, CPT typical

    Rp0

    .2 [M

    Pa]

    Hot coil

    654 SMO

    EDX 2304

    EDX 2205

  • 3/3/2015 9

    Resistance la Corrosion

  • Corrosion par piqre dans leau

    Valable pour Eau pH 6-8 Lger renouvellement Soudures bien

    dcapes/nettoyesAggressivit augmente avec Baisse du pH Teneurs croissante en

    agents oxydant et vice versa

    Temperatures etconcentrations en chlorure maximales en eau Lgrement chlore (

  • Corrosion Caverneuse dans leau

    Valable pour Eau pH 6-8 Lger renouvellement

    Aggressivit augmente avec Baisse du pH Teneurs croissante en

    agents oxydant et vice versa Conditions trs corrosives

    dans les changeur plaques

    Temperatures etconcentrations en chlorure maximales en eau Lgrement chlore (

  • Fissuration sous tension, SCC

    904L254 SMO

    4565654 SMO

    Acier Austnitiques hautes teneursen Ni and Mo

    +NiLDX 2101

    2304LDX 2404

    2205 2507

    -Ni Les aciers duplex plus conomiques

    Les chlorures favorisent la SCCSensibilit des aciers austenitiques standard 4301& 4404

    Augmentation de la rsistance au SCC:

    3/3/2015 12

  • Gamme de produits disponibles

    HRP(P), Tles Quarto:

    t = 2-100* mm

    CPP(H), Bobines & tles:

    t = 4-10* mm

    CR (C), Bobines & tles : t = 0.1-6* mm

    Billettes, fil machine, barres

    et fer bton

    Tubes

    Tubes rectangulaires

    Elments de structure

    Accessoires

    Produits de soudage

    *Max/min. Epaisseurs fonction de la nuance et de la largeur. Hors-groupe Outokumpu

  • Le Benefice des duplex est conomique

    Plus faibles paisseurs- Advantage conomique!

    Maintenance minimale, Plus longue dure de vie- Advantage global!

    teneur nickel plus faibles- Stabilit des cots!

    Courtesy of Highland Group

    Courtesy by Voith

  • Limites en temprature de Service

    -40

    250

    [C]

    Tempratures de service recommandespour les inox duplex: -40 to 250C

    Temperatures leves (>250C):Risques de fragilisation!

    Tempratures cryogniques (

  • 3/3/2015 16

    Bonne soudabilit

    Paramtres de soudage diffrents des inox austnitiques:

    o Gomtrie du joint, pntration

    o Gaz de purge & de soudage

    o Produits dapport sur-allis

    o Vitesse de soudage

    o Apport de chaleur, dilution & structures intermtalliques

    Soudage des inox duplex

  • Duplex et l Environment

    Un Produit Responsable Base de ferrailles 100% recyclable Faible taux de relargation

    dions mtalliques danslenvironment

    Grande durabilit: plus longue dure de vie moinsde maintenance

    Aucune protection polluantede la surface

    Utilisation des propritsmcaniques pour rductiondes poids: gain en nergieet en CO2 mis danslatmosphre

  • Duplex stainless steels: The smart choice!

    Duplex Duplex: Exemples

    The duplex business case Conclusions

  • ChallengeAchieving the highest standards in the passage that links the Guggenheim Museum to the University of Deusto, to match the museums architectural design and to educate students about the aesthetic merits and potential of stainless steel.

    Solution

    Duplex 2304 with a special plate surface finish for enduring beauty. A great example of value creation, where weight reduction, lower life cycle costing and sustainability is realized.

    Case AB&C: Bilbao bridge, Spain

  • Challenge

    Identifying the right material for the bridges tubular, load-bearing arches.

    Solution

    Duplex 2304 to provide first-rate corrosion resistance in the atmospheric conditions coupled with excellent mechanical properties, cost-efficiency, and ease of fabrication.

    photo courtesy: Cimolai

    photo courtesy: Cimolai

    Case AB&C: Celtic Gateway footbridge, Holyhead, UK

  • Challenge

    To substitute austenitic 4404 pipes in water heaters. To find a more cost effective material, better properties; lower thermal expansion and reduced risk of stress corrosion cracking (SCC).

    Solution

    Lean Duplex LDX 2101 provides weight reduction 30% and fulfilling the requirements for better material performance.

    Case Industrial Heating & Cooling: Water heating

  • Case Domestic Heating & Cooling: Water heaters

    Challenge

    Find a cost efficient alternative to enamel carbon steel, copper or claded solutions, with suitable properties for highly automatic multiple production. At the same time make it possible to increase life time, avoid the need of sacrificing anode and reduce weight.

    Solution

    Water Heaters in LDX2101 or 2304 is a perfect product for regions with Scandinavian or Euro-peanwater quality. The strength of duplex allows at least a 30% wall thickness reduction, making the boiler both easier to handle and cheaper to produce. No coating or pressure supporting material is needed. For more demanding environments, 2205 is recommended. Domestic Water Heater, courtesy of

    Kingspan Hot Water Systems LTD

  • Case Heavy transport: Road tankers

    Challenge

    To let tank maker INDOX of Spain produce all-stainless LNG tankers with the objectives to improved quality, cost-efficiency and reduced tanker weight.

    Solution

    Outer hull fabricated out of LDX 2101. The customer, Spanish trucking company HAM, can retain its preferred all-stainless look of tankers without coating, while gaining the benefits of LDX 2101.

    Courtesy of INDOX

  • Case Energy: Storage tanks for bioethanol

    Challenge

    More economical bioethanol fermentation tanks than ones built out of the conventional stainless material, austenitic 1.4301/1.4307 (304/304L). By tank fabricator CITAL of Italy.

    Solution

    Tank wall structures built out of LDX 2101, with the benefit in total of 15% saving in material. CITAL made the grade selection solely on the basis of the potential for