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Datasheetupdated2013112808:39:24(supersedesallpreviouseditions)
Sandvik 3R60(Tube and pipe,
seamless)Sandvik3R60isanausteniticchromiumnickelsteelwithminimum2.5%molybdenumandalowcarboncontent.
Sandvik3R60isalsoavailableinavariantfortheureaindustry,Sandvik3R60UreaGrade.
STANDARDS
ASTM TP316L, TP316UNS S31603, S31600EN number 1.4435, 1.4436EN
name X 2 CrNiMo 18-14-3, X 3 CrNiMo 17-13-3W.Nr. 1.4435, 1.4436DIN
X 2 CrNiMo 18 14 3, X 5 CrNiMo 17 13 3SS 2353, 2343AFNOR Z 2 CND
17.13BS 316S13JIS SU316LTP, 316TP, SU316LTB, 316TB
Product standardsASTM A213, A269 and A312JIS G3459JIS G3463EN
10216-5BS 3605, 3606DIN 17456, 17458NFA 49-117*, 49-217*SS 14 23
53, 14 23 43
ApprovalJISApprovalNo.SE9402forStainlessSteelTubes
*Mocontent2.002.40%
CHEMICAL COMPOSITION (NOMINAL) %
C Si Mn P S Cr Ni Mo
0.030 0 .4 1 .7 0.040 0.015 17.5 13 2 .6
FORMS OF SUPPLY
Seamless tube and pipe- Finishes and
dimensionsSeamlesstubeandpipein3R60issuppliedindimensionsupto260mmoutsidediameterinthesolutionannealedandwhitepickledconditionorsolutionannealedinabrightannealingprocess.
Other forms of
supplyWecanalsodeliverotherproductformsfromstockinagradecorrespondingto316Lmainly:
Welded tube and pipeFittings and flangesBar steelFiller metal
for welding
Sizes in
stockSeamlesstubeisstockedinawiderangeofsizesaccordingtoISO.HeatexchangerandinstrumentationtubesarealsostockedinBWGandSWGsizes.HollowbarisstockedinalargenumberofsizesasSANMAC316L(seedatasheetS1840ENG).DetailsofourmanufacturingprogrammearegivenincatalogueS110ENG.
MECHANICAL PROPERTIES
Fortubeandpipewithwallthicknessgreaterthan10mm(0.4in.)theproofstrengthmayfallshortofthestatedvaluesbyabout10MPa(1.4ksi).
At 20C
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Proof s t rength Tens i le s t rength Elong. Hardness
R R R A A
MPa MPa MPa % % HRB
METRIC UNITS
220 250 515690 40 35 90
At 68F
Proof s t rength Tens i le s t rength Elong. Hardness
R R R A A
k s i k s i k s i % % HRB
IMPERIAL UNITS
32 36 75100 40 35 90
1MPa=1N/mma)R andR
correspondto0.2%offsetand1.0%offsetyieldstrength,respectively.b)BasedonL
=5.65S whereL istheoriginalgaugelengthandS
theoriginalcrosssectionarea.c)NFA49117,49217withmin45%canbefulfilledonrequest.
Impact
strengthDuetoitsausteniticmicrostructure,Sandvik3R60hasverygoodimpactstrengthbothatroomtemperatureandatcryogenictemperatures.
TestshavedemonstratedthatthesteelfulfilstherequirementsaccordingtotheEuropeanstandardsprEN134452(UFPV2)((min.60J(44ftlb)at270
C(455F)andprEN102165(min.60J(44ftlb)at196 C(320 F).
At high temperatures
Temperature Proofstrength
R R
C MPa MPa
min. min.
METRIC UNITS
50 200 230
100 180 215
150 165 195
200 150 180
250 140 170
300 135 160
350 130 155
400 125 150
450 120 145
500 120 145
550 115 140
600 110 135
p 0 . 2a
p 1 . 0a
mb
2 "
c
p 0 . 2a
p 1 . 0a
mb
2 "
c
2
p0.2 p1.00 0 0 0
oo o o
p0 . 2 p 1 . 0
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Temperature Proofstrength
R R
F ks i ks i
min. min.
IMPERIAL UNITS
200 26 31
400 21 26
600 19 23
800 18 21
1000 17 20
Temperature 10000h 100000h
C F MPa ks i MPa ks i
approx. approx. approx. approx.
CREEP-RUPTURE STRENGTH (ISO-VALUES)
550 1020 255 37.0 177 25.7
575 1065 214 31.0 137 19.9
600 1110 172 24.9 108 15.7
625 1155 137 19.9 86 12.5
650 1200 108 15.7 64 9 .3
675 1245 83 12.0 46 6 .7
700 1290 64 9.3 33 4 .8
725 1335 49 7.1 25 3 .6
750 1380 37 5.4 18 2 .6
PHYSICAL PROPERTIES
Density:8.0g/cm ,0.29lb/in
Temperature,C W/mC Temperature,F Btu/f t hF
THERMAL CONDUCTIVITY
20 14 68 8
100 15 200 8.5
200 17 400 10
300 18 600 10.5
400 20 800 11.5
500 21 1000 12.5
600 23 1100 13
p0 . 2 p 1 . 0
3 3
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Temperature,C J/kgC Temperature,F Btu/lbF
SPECIFIC HEAT CAPACITY
20 485 68 0.11
100 500 200 0.12
200 515 400 0.12
300 525 600 0.13
400 540 800 0.13
500 555 1000 0.13
600 575 1100 0.14
Temperature,C PerC Temperature,F PerF
THERMAL EXPANSION
30100 16.5 86200 9.5
30200 17 86400 9.5
30300 17.5 86600 10
30400 18 86800 10
30500 18 861000 10
30600 18.5 861200 10.5
30700 18.5 861400 10.51)Meanvaluesintemperatureranges(x10 )
Temperature,C MPa Temperature,F ks i
MODULUS OF ELASTICITY
20 200 68 29.0
100 194 200 28.2
200 186 400 26.9
300 179 600 25.8
400 172 800 24.7
500 165 1000 23.51)(x10 )
CORROSION RESISTANCE
Sandvik3R60hasgoodresistancein:
Organic acids at high concentrations and moderate
temperaturesInorganic acids, e.g. phosphoric and sulphuric acids,
at moderate concentrations andtemperatures. The steel can also be
used in sulphuric acid of concentrations above 90% atlow
temperature.Salt solutions, e.g. sulphates, sulphides and
sulphitesCaustic environments
Stress corrosion
crackingAusteniticsteelsaresusceptibletostresscorrosioncracking.Thismayoccurattemperaturesaboveabout60C(140F)ifthesteelissubjectedtotensilestressesandatthesametimecomesintocontactwithcertainsolutions,particularlythosecontainingchlorides.Suchserviceconditionsshouldthereforebeavoided.Conditionswhenplantsareshutdownmustalsobeconsidered,asthecondensateswhicharethenformedcandevelopconditionsthatleadtobothstresscorrosioncrackingandpitting.
Inapplicationsdemandinghighresistancetostresscorrosioncracking,austeniticferriticsteels,suchasSandvikSAF2304orSAF2205arerecommended.SeedatasheetsS1871ENGandS1874ENG.
Intergranular
corrosionSandvik3R60hasalowcarboncontentandthereforebetterresistancetointergranularcorrosionthansteelsoftypeAISI316.TheTTCdiagram,Figure1,showstheresultofcorrosiontestingfor24hoursinboilingStrausssolution(12%sulphuricacid,6%coppersulphate).TheresistancetograinboundaryattackismuchbetterforAISI316L
1)
6
1)
3
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thanforAISI316.Thisisanadvantageincomplicatedweldingoperations.
Figure2.TTCdiagramforSandvik3R60(AISI316L)andAISI316.Pittingandcrevicecorrosion
Resistancetothesetypesofcorrosionimproveswithincreasingmolybdenumcontent.Sandvik3R60,containingabout2.6%Mo,hassubstantiallyhigherresistancetoattackthanthesesteelsoftypeAISI304andalsobetterresistancethanordinaryAISI316/316Lsteelswith2.1%Mo.
Gas corrosionSandvik3R60canbeusesin
Air up to 850C (1560F)Steam up to 750C (1380F)
Creepbehaviourshouldalsobetakenintoaccountwhenusingthesteelinthecreeprange.
Influegasescontainingsulphur,thecorrosionresistanceisreduced.Insuchenvironmentsthesteelcanbeusedattemperaturesupto600750C(11001380F)dependingonserviceconditions.Factorstoconsiderarewhethertheatmosphereisoxidisingorreducing,i.e.theoxygencontent,andwhetherimpuritiessuchassodiumandvanadiumarepresent.
HEAT TREATMENT
Thetubearedeliveredinheattreatedcondition.Ifadditionalheattreatmentisneededafterfurtherprocessingthefollowingisrecommended.
Stress relieving850950C(15601740F),coolinginair
Solution
annealing10001100C(18302010F),rapidcoolinginairorwater.
WELDING
TheweldabilityofSandvik3R60isgood.SuitableweldingmethodsaremanualmetalarcweldingwithcoveredelectrodesandgasshieldedarcweldingwiththeTIGandMIGmethodsasfirstchoice.Preheatingandpostweldtreatmentarenotnormallynecessary.
Sincethematerialhaslowthermalconductivityandhighthermalexpansion,weldingmustbecarriedoutwithalowheatinputandwithweldingplanswellthoughtoutinadvancesothatthedeformationoftheweldedjointcanbekeptundercontrol.If,despitetheseprecautions,itisforeseenthattheresidualstressesmightimpairthefunctionoftheweldment,werecommendthattheentirestructurebestressrelieved.SeeunderHeattreatment.
AsfillermetalsforgasshieldedarcweldingwerecommendwireelectrodesandrodsSandvik19.12.3.L,19.12.3.LSi.Inshieldedmetalarcwelding(SMAW)coveredelectrodesSandvik19.12.3.LR,19.12.3.LRVor19.12.3.LRHDarerecommended.Iffluxcoredarcweldingispreferred,theelectrodes19.12.3.LTor19.12.3.LVTshouldbeused.
BENDING
Annealingaftercoldbendingisnotnormallynecessary,butthispointmustbedecidedwithregardtothedegreeofbendingandtheoperatingconditions.Heattreatment,ifany,shouldtaketheformofstressrelievingorsolutionannealing,seeunderHeattreatment.
Hotbendingiscarriedoutat1100850C(20101560F)andshouldbefollowedbysolutionannealing.
APPLICATIONS
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Sandvik3R60isusedforawiderangeofindustrialapplicationswheresteelsoftypeAISI304and304Lhaveinsufficientcorrosionresistance.Typicalexamplesare:heatexchangers,condensers,pipelines,coolingandheatingcoilsinthechemical,petrochemical,pulpandpaperandfoodindustries.
DISCLAIMER:Recommendationsareforguidanceonly,andthesuitabilityofamaterialforaspecificapplicationcanbeconfirmedonlywhenweknowtheactualserviceconditions.Continuousdevelopmentmaynecessitatechangesintechnicaldatawithoutnotice.ThisdatasheetisonlyvalidforSandvikmaterials.
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