The Ferritic Solution - Euro Inox

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ferritic stainless steels have stress-strain curves fairly similar to those of plain carbon steels. with moderately high yield strength (generally higher than that of austenitics), moderately high ultimate tensile strength and good total elongation performance, they offer good ductility. Mechanical ProPerties (cold rolled) ASTM A 240 JIS G 4305 EN 10088-2 R m min R p02 min A 5 min R m min R p02 min A 5 min 409 380 170 20 -- -- -- -- X2crti12 1.4512 380- 560 410s 415 205 22 sUs 410 430 450 205 22 sUs 430 434 450 240 22 sUs 434 436 450 240 22 sUs 436 440 205 20 X2crni12 1.4003 450- 650 420 205 22 X6cr17 1.4016 450- 600 450 205 22 X6crMo17-1 1.4113 450- 630 410 245 20 X6crMonb17-1 1.4526 480- 560 439 415 205 22 -- -- -- -- X2crti17 1.4520 380- 530 439 415 205 22 -- -- -- -- X2crti17 1.4510 420- 600 441 415 205 22 -- -- -- -- X2crMonb18 1.4509 430- 630 s44400 (444) 415 275 20 sUs 444 304 205 515 40 sUs 304 410 245 20 X2crMoti18-2 1.4521 420- 640 520 205 40 X5crni1-80 1.4301 540- 750 the above table expresses properties in terms of u.S., Japanese and european standards, comparing ferritic grades with standard austenitic grade 304. rm = ultimate tensile strength, rp02 = yield strength and a5/a80 = elongation to fracture. R m R p02 min A 80 min 220 25 320 20 280 18 280 18 300 25 200 24 240 23 250 18 320 20 230 45 Soleplate of electric iron, in buffed grade 430. phySicaL pRopeRtieS the physical properties of a metallic alloy concern the material’s ability to conduct heat, conduct electricity, expand or shrink, etc. ferritics are magnetic. they also have some other useful advantages over austenitic grades. their thermal conductivity, for instance, is notably high. this means that they spread heat comparatively efficiently – which makes them highly suitable for applications such as electric irons or heat exchangers (tubes or plates). the thermal expansion coefficient of ferritic stainless steels is similar to that of carbon steel and much lower than that of austenitic stainless steel. as a result, ferretics distort less when heated. Type of stainless steel 409/410 10%-14% Cr 430 14%-17% Cr Stabilised 430Ti, 439, 441 Mo > 0,5% 434, 436, 444 Others 17%-30% Cr PhYSiCal ProPErTiES Density Electric resistance Specific heat g/cm 3 � mm 2 /m 0 ~ 100°C J/kg • °C <strong>The</strong>rmal conductivity 100°C W/m • °C <strong>The</strong>rmal expansion coefficient 0~200°C 0~600°C 10 -6 /°C Young’s modulus x10 3 N/mm 2 7.7 0.58 460 28 11 12 220 7.7 0.60 460 26 10.5 11.5 220 7.7 0.60 460 26 10.5 11.5 220 7.7 0.60 460 26 10.5 11.5 220 7.7 0.62 460 25 10.0 11.0 220 304 7.9 0.72 500 15 16 18 200 Carbon steel 7.7 0.22 460 50 12 14 215 the modulus of elasticity of ferritic grades (at 20°c) is superior to that of 304 austenitic. iS units: g/cm 3 = kg/dm 3 – J/kg • °c = J/kg • °k – w/m • c = w/m • k –10-6/°c = 10-6/°k – n/mm 3 = Mpa. Boiler inner tube, in grade 444, S. Korea.
aS Strong aS carbon Steel, low-chroMiuM ferritic gradeS are alSo corroSion reSiStant. ferritic rail ore wagonS therefore haVe a lower life cycle coSt (lcc).
Page 2 and 3: International Stainless Steel Forum
Page 4 and 5: Structural Steelwork for highway br
Page 6 and 7: Foreword “A Steel whoSe time hAS
Page 8 and 9: the Shining appearance of ferritic
Page 10 and 11: 10 in the Sugar induStry, ferritic
Page 12 and 13: 1 WhaT They’re SayIng abouT FerrI
Page 14 and 15: 1 the 5 feRRitic “faMiLieS” fer
Page 16 and 17: 1 indeed, in many cases, ferritics
Page 18 and 19: 1 peRfection iS MatchinG the Spec i
Page 22 and 23: group 1 ferritics are best suited t
Page 24 and 25: corrosion sets in when ph reaches a
Page 26 and 27: WhaT They’re SayIng abouT FerrITI
Page 32 and 33: SucceSSfuL dRawinG MeanS • the ab
Page 34 and 35: lubrIcaTIon good lubrication of the
Page 36 and 37: WhaT They’re SayIng abouT FerrITI
Page 38 and 39: this is especially true of “stabi
Page 40 and 41: 0 Several resistance welding techni
Page 42: adheSive bondinG adhesive bonding c
Page 45 and 46: products and applications Ferritics
Page 47 and 48: uilding & ConStruCtion acceSSorIeS
Page 49 and 50: lIFTS eScalaTor STepS grade SuS 430
Page 51 and 52: home & oFFiCe in the following appl
Page 53 and 54: kITchenWare lIQuId dISpenSer grade
Page 55 and 56: Food proceSSIng WallS & ceIlIngS gr
Page 57: trAnSportAtion buS & coach body Fra
Page 60 and 61: 0 10%-14%cr 14%-18%cr group 1 group
Page 62 and 63: iMpreSSiVe uSe of ferritic welded t
Page 64 and 65: AppendiCeS references bucher, l., p
Page 66 and 67: 66 Appendices List of members Ugine

The Ferritic Solution - Euro Inox

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