Corrosion resistance table - Dacapo Stainless

1 1 Corrosion resistance tableStainless steels can be susceptible to certain localised Corrosion mechanisms,namely crevice Corrosion , pitting, intercrystalline Corrosion , stress Corrosion cracking and bimetallic (galvanic) Corrosion . Localised Corrosion is often associated with chloride ions in aqueous resistance relies on a good supply of oxygen. Higher levels of chromium, nickel, molybdenum and nitrogen in-crease resistance to localised Corrosion table is not a exact reproduction of reality, it is a first criterion for Corrosion in the case of general Corrosion is expressed as weight lossby unit of time and surface area, for example grammes by square meter and per hour, or loss of thickness per unit of time, for example mm per loss of weight by unit of time and surface area is commonly used for laboratory tests, the loss of thickness per unit of time is commonly used in general accepted practical limit within a material is considered Corrosion resistant, is per !

2 Remember that Corrosion is a complicated issue, depending on the combinations of materials and the fluids, the fluid temperatures, the surrounding environment and the galvanic currents in the Corrosion table must be used with entityConversion factorsg/m hmm / yearmm / yearg/m ,64: : ,360: ,2: ,0: : ,036: ,42: ,60: : /24h2031760: : ,88: : Factors2 Corrosion resistance tableComposed unitConversion factorsg/m hmm / yearmills/yearmm/year0,116 x ,39 x ,80 x (ipy)2,95 x (imp)35,3 x (mpy)0,003 x (mpm)0,035 x = Specific gravitymills (thousandth of an inch) per year penetrationCorrosion criteria based on laboratory tests are commonly expressed in grams per square meter per hour. For all metals this entity correspondents with approximately mm/per year (1 g/m h = 1,1 mm/year) beacause the specific gravity ( to ) for all metal is has a specific gravity of the entity is 1g/m h =1,9 mm gravity13 Cr - 2 - 5 - 1,5 - , , , - 12 - 2,5 , , , , , , - 14 - 3,5 - 15 - 4,5 - 25 4,5 Mo - 1,5 criteriaSpecific gravity Stainless steels and other metals3 Corrosion resistance tableIn the table on the next pages the following symbols are used meaning:012 PSKAll concentrations are in the percentage weight loss, the solvent is water unless differently indicated.

3 The information applies for annealed materials with a normal structure and a surface that is rate less than material is Corrosion rate - material is not Corrosion proof, but useful in certain rate over Corrosion . The material is not usable. Risk (Severe risk) of pitting and crevice Corrosion . Risk (Severe risk) of stress Corrosion resistance tableMediumChemical formularConcentrationTemp. C304 cr 18 ni 9316cr 17ni 12mo 2,5 Acetone(CH3)2CO120-K00 AcetylchlorideCH3 COCI100% drywetKK1 P1S0 P0 SAlumKAL(SO4) meltedAL-70022 Aluminium acetateAl (OOCCH3)3saturatedK00 AluminiumchlorideALCL35%50P0SP0S5%100P2S P2S10%1002210%1502220%1002220%1502225%20 2225% nitrateAL(NO3)3all sulphateAL2(SO4) by 20 C105=K22 AmmoniumNH4 OHall bifluorideNH4HF210%2521 Ammonium bicarbonate(NH4)HCO3all resistance tableMediumChemical formularConcentrationTemp.

4 C304 cr 18 ni 9316cr 17ni 12mo 2,5 Ammonium chlorideNH4CL1%20P0P01%100P0SP0S5%KP0SP0 S10%20-50P0P010%90-100P0SP0S10%KP1SP0S10 %135P1SP0S20%20-50P0P020%90P1SP0S20%KP1S P1S115P2SP1 SAmmonium carbonate(NH4)2CO3 H2 Oall nitrateNH4NO3 + (NH4)2SO41006000in elke verhouding10012010 Ammonium oxalate(NH4)2C2O41-8%20005-20%10010 AmmoniumperchlorateNH4 CIO410%200010%K0020%300010%KP0SP0S30P0P0 Ammonium sulfphate(NH4)2SO4all sulphite(NH4)2SO3saturated20-K00 Aniline unrefinedC6H5NH2100%2000 Aniline hydrochlorideC6H5NH2 HCIall , meltedSb-65022 Acetic acidCH3 COOH1%90001%100K005%20005%50005%75005%10 0=K0010%200010%750010%100=K1020%200020%8 00020%90106 Corrosion resistance tableMediumChemical formularConcentrationTemp. C304 cr 18 ni 9304 316cr 17ni 12mo 2,5 Acetic acidCH3 COOH20%100=K2050%200050%800050%901050%10 02080%200080%400080% yeast-20-K00 Borax: in solutionNa2B4O710H2 Oall acidB(OH)3all moistBr2100%2022 Aqueous solution acidC3H7 COOH100%2001100%K10 CalciumbisulphiteCa(HSO3)210%200010%K10 CalciumchlorideCaCI2 6H2 Ocold saturatedCalciumhypochlorideCa(CIO)21%20 P1P02%100P1SP1S6%20P1P16%100P2SP1 SCalcium sulphateCaSO4all gas 100%moist gas7020-6060-1000P2 P2S0P2 P2S7 Corrosion resistance tableMediumChemical formularConcentrationTemp.

5 C304 cr 18 ni 9304 316cr 17ni 12mo 2,5 ChlorobezeneC6H5CI100%20%00100%132-K00wi th moistureP0SP0 SChloroacetic Acid (mono)CH2 CICOOH30%802250%2022100%10022100%10022 Chloride of lime , 100%62=K00 Sulpher chlorideS2CI2dry 100%2000dry 100%136=K00nat20P1P1 Chloric acidHCIO310%20--100%20P2P2 Hydrogen chloride, gasHCIdry20-4000dry100112501400-50022 Chromic acidCrO32%7500pure, H2SO4 free2%100=K225%80005%100=K1210%400010%K2 220%200020%501120%K2240%201140%402250%20 228 Corrosion resistance tableMediumChemical formularConcentrationTemp. C304 cr 18 ni 9304 316cr 17ni 12mo 2,5 Citric acidC3H4(OH)(COOH)31%20001%K005%20-50005 %85-K005%1401010%20-400010%85-K0025%2000 25%400025%851025%1002025%K2050%200050%40 0150%1002050%K2070%K20 Hydrocyanic acidHCN100%2000 DichloroethyleneC2H2CI2100%wet20-K0P0S0P 0 SEthyl chlorideC2H5 CIwet20-K0P0S0P0 SEthyl alcoholC2H5 OHall ether(C2H5)2O-20-K00 Ethyl chlorideC2H4CI2100%20-K00 HyposulphiteNa2S2O3+K2S2O440%, 2,5%20P00 Hyposulphite +Sulphuric acidNa2S2O3+Na2SO3+H2SO419%, 4,7% fluorideHF1%201010%202275%2022100%2011 FormaldehydeHCHOall acidC6H2(OH)3 COOH conc.

6 25% saturatedop 100 CK00 GlycerineC3H5(OH)3all resistance tableMediumChemical formularConcentrationTemp. C304 cr 18 ni 9304 316cr 17ni 12mo 2,5 Iodine, drymoistI2dry2000moist20P2 P2 water solution 1%20P0P0water solution 2%+ 1% KI20P0P0 Idioform, liquefiedvaporousCHI3crystal20P0P0damp50 P0P0 Potassium dichromateK2Cr2O720%900025%200025%K00 Potassium bifluorideKHF2cold saturatedPotassium bitartrateKH(OOC(OH)CH)2saturatedK10bij 100 CPotassium bromideKBrall chlorateKCIO37-10%500010%1000036%K10met CIPSPSP otassium chlorateKCIO3all cyanideKCNOP otassium cyanideKCNall ferricyanideK3(Fe(CN)6)all hydroxideKOH10%K0020%200025%K0050%200050 %K1S1S70%1201S1 Smelted300-3652S2 SPotassium hypochloriteKCIO<2%20P1P0until 20 g as cl/liter>20%20P2P1 KaliumjodideKIall carbonateK2CO3all nitrateKNO3all resistance tableMediumChemical formularConcentrationTemp.

7 C304 cr 18 ni 9304 316cr 17ni 12mo 2,5 Potassium oxalate(C OOK)2 x H2 O2000K00 Potassium permanganateKMnO45-10%200010%K00 Potassium sulphateK2SO4all acidHF1%201010%202275%3022100%2011 Nitrohydrochloric acidHCI+HNO322 Copper acetateCu(CH3 COO)2all cyanideCu(CN)2saturatedat 100 CCopper nitrateCu(NO3)2all sulphateCuSO4all cyanideHg(CN)25%2000 Mercuric nitrateHg(NO3)25%2000 Lead, meltedPbmelted4001090022 Lead acetate(CH3 COO)2Pb 3H2 Oall20-9000concentrationsK00 Lead acetate, basicPb(CH3 COO)2 Pb(OH)2 Lead nitratePb(NO3)2all resistance tableMediumChemical formularConcentrationTemp. C304 cr 18 ni 9304 316cr 17ni 12mo 2,5 Manganese sulphateMgSO45%20005%600010%200010%60002 0%20020%K0026%K00 Mangaan chloruurMnCI25%100P0SP0S 10%KP0SP0S10%135P0SP0S20%100P1SP0S50%KP1 SP0 SManganese sulphateMnSO4alle alcoholCH3OH100%65-K00 Methyl chlorideCH3 CIdroog 100%2000 MilkFresh2000K00sour2000 Lactic acid + sulphuric acid(C2H4 COH)COOH+ H2SO410-50%25%K22 Mustard20P0P0 Sodium carbonateNaHCO3all bisulphateNaHSO41%85102%20002%85104%2010 4%K205%20105%852010%201010%502010%K2115% 8522 Sodium bisulphateNaHSO310%200010%K10 NatriumchloraatNaCIO310%200010%K10 Sodium fluorideNaF5-10%20-1000012 Corrosion resistance tableMediumChemical formularConcentrationTemp.

8 C304 cr 18 ni 9304 316cr 17ni 12mo 2,5 Sodium hydorxydeNaOH10%200010%900010%103=K0020% 200020%900025%200025%112=K0030%2000 Sodium hydorxydeNaOH30%1000030%116=K1S0S40%8000 40%900040%1001140%128=K1S1S50%600050%901 150%1001150%1201150%140=K1S1S60%901160%1 201160%160=K2S2S70%901170%1301170%180=K2 S2S90%3002S1 Smelted3202S2 SSodium hypochloriteNaCIO5%20P1P15%KP1SP1 SSodium carbonateNa2CO3all nitrateNaNO3all nitriteNaNO2alle perchlotaeNaCIO410%K00 Sodium phosphateNa3PO4all sulphateNaSO4all resistance tableMediumChemical formularConcentrationTemp. C304 cr 18 ni 9304 316cr 17ni 12mo 2,5 Sodium sulphadeNaSS5%K 200010%K0010-50%2000 Sodium sulphiteNa2SO350%K0050%2000 Sdodium thiosulphateNa2S2O350%K0050%2000 Nickel chlorideNiCI210%100P0P010%KP0 SP0 SNickel nitrateNi(NO3)25-10%K00 Nickel sulphateNiSO4all oil00 Oil (spice oil)K00 Oxalic acid10%250010%500010%601010%802110%101=K 2125%602025%752125%103=K2240%7521 Paraffin, melted-20-10000 Petrol-20-K00 PhenolC6H5 OHall formularConcentrationTemp.

9 C304 cr 18 ni 9304 316cr 17ni 12mo 2,5 Phosphoric acidH3PO41%20001%100=K001%140003%100=K00 5%20-60005%85005%100=K0010%400010%600010 %800010%101=K0020%350020%600020%102=K003 0%20-350030%600030%1001040%350040%500040 %1001040%106=K2150%200050%350050%500050% 850050%1001150%110=K2260%200060%350060%1 002160%116=K2270%350070%902170%126=K2280 %200080%350080%801080%10021 Corrosion resistance table15 Corrosion resistance tableMediumChemical formularConcentrationTemp. C304 cr 18 ni 9304 316cr 17ni 12mo 2,5 Phosphoric acidH3PO480%146=K2285%200085%500085%9521 85%156=K22 Phosphorus pentoxidedry and moistP2O5droogvochtig20200100alle resistance tableMediumChemical formularConcentrationTemp. C304 cr 18 ni 9304 316cr 17ni 12mo 2,5 Nitric acidHNO330%1201150%200050%700050%900050% 1101150%117=K1160%200060%600060%1001160% 121=K1165%200065%600065%700065%901165%12 1=K1165%17580%200080%500080%801180%106=K 2190%200090%802290%94=K2294%300097%25009 9%251199%402299%84=K22 Nitrous acidHNO2all , meltedSnmelted3000035040011500-70022 Stannous (II) chlorideSnCl25-24%18-24%20KP2P2P1P2 TolueneC6H5CH3100%K00 Trichloroethylene(technical grade)C2 HCl3 Urine-0-60P0P0 UreaCO(NH2)2-1800017 Corrosion resistance tableMediumChemical formularConcentrationTemp.

10 C304 cr 18 ni 9304 316cr 17ni 12mo 2,5 Fatty acid, oil acid100%2000 Stearic acid100%80-13000100%15000100%18010100%23 510100%30020 Hydrogen peroxideH2O21-2%50005%20005%40-500010%23 0010%400010%60-800015%220015%30-400015%5 0-800030%270030%40-800050%4000 Fruit juices, Wines-00 Wine vinagar4-5%2000 Tataric acidH2(OH)2(COOH)21%90001%100=K0020%7000 20%1001030%600030%901030%102=K1050%50005 0%700050%901050%106=K2160%801060%1002170 %114=K2175%1002175%118=K21 Iron (III) chloride(ferric chloride)FeCI30,5-50%20-100P2P218 Corrosion resistance tableMediumChemical formularConcentrationTemp. C304 cr 18 ni 9304 316cr 17ni 12mo 2,5 Iron (III) nitrate(ferric nitrate)Fe(NO3)3all (III) sulphate(ferric sulphate)Fe2(SO4)410%20-K00 XyleneC6H4(CH3)2all nitrateAgNO3all resistance tableMediumChemical formularConcentrationTemp.