RA333 Data Sheet [Heat Resistant Alloys] - Rolled Alloys

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Stress Corrosion CrackingResistance of Duplicate U-Bend Specimens of RA333 to Stress Corrosion Cracking 29 in simulated Deep Sour GasSolutions Containing 0.8 MPa (100 psi) H 2S+0.8 MPa (100 psi) CO 2Average Corrosion Ratefor Duplicate SpecimensAlloy Condition mpy mddMill annealed 0.24 (1.4)Cold rolled 23% 0.23 (1.3)Material Tested Heat 7951 12 gauge (2.5 mm) sheetRA333 ® 295% NaCl+0.5% acetic 25% NaCI+0.5 aceticAlloy Condition acid at 177°C (350°F) acid at 232°C (450°F)Mill annealed No cracking (14 days) No cracking (30 days)Cold rolled 23% No cracking (14 days) Cracked (7 days)Corrosion Resistance of RA333 in a Simulated Deep Sour Gas Solution of 25% NaCI+0.5% Acetic Acid at 232°C(450°F) and containing 0.8 MPa (100 psi) H 2S and 0.8 MPa (100 psi) CO 2Chemical AnalysisCr Ni Mo Co W Mn Si C P S Fe25.09 44.84 3.15 3.11 3.09 1.80 1.44 0.042 0.017 0.005 BalRoom Temperature Tensile Properties of RA333 Heat 7951Ultimate0.2% Offset TensileYield Strength Strength, % ElongationCondition ksi (MPa) ksi (MPa) in 50 mm (2 in.)Mill annealed 48.3 (333.0) 104.0 (717.0) 52.9Cold reduced 23% 121.9 (840.4) 134.5 (927.2) 1.8
Stress Corrosion CrackingRA333 ®RA333 Laboratory Tests and Brine Well Exposure1. General Corrosion in ASTM D-1141 Substitue Seawater 0.18 mil/year (1.0 mdd) average of four tests. Little if anypitting, no crevice corrosion. 75°F (24°C) test temperature.2. General Corrosion, 75°F, (24°C) in NACE TM-01-77 solution 5% NaCl + 0.5% CH 3COOH + H 2S 0.02 mil/year (0.11mdd).3. Stress Corrosion Cracking, NACE TM-01-77 75°F Stress 81% of 0.2% yield (109,000 psi 752 MPa). No crackingin 1000 hours. Stress 95% of 0.2% yield, 119,000 psi 820MPa. No cracking in 1000 hours.4. Corrosion in heavy brine well saturated with CO 2, H 2S and CH 4, bromine present. Temperature 210°F (99°C)exposure approximately 90 days. 0.066 mil/year (0.38 mdd). Location Magnolia, Arkansas.All the above tests were conducted on 0.670” dia. (17mm) as cold-drawn bar [cold drawn 20% from 0.75” dia (19 mm)hot rolled annealed heat 38253].Tensile Properties, duplicate tests, are as follows:Ultimate0.2% Offset TensileTest Yield Strength Strength %ElTemp°F (°C) psi (MPa) psi (MPa5) in 4D % RA75 (24) 132,400 (913) 146,900 (1013) 17.5 56.7136,500 (941) 147,200 (1015) 18.0 58.2450 (232) 126,400 (871) 129,700 (894) 15.3 53.9124,500 (858) 129,600 (894) 15.2 55.0One more sample of hot rolled annealed 16 gauge (1.6 mm) sheet, heat 70751 was exposed in a well with highpressure SO 2saturated with brine vapor, approx. 150°F, corrosion rate 0.045 mil/year (0.26 mdd).Heat AnalysisHeat No. C P S Si Mn Ni Cr Mo Co W Fe38253 0.045 .018 .005 1.06 1.69 44.85 24.54 3.03 3.06 3.00 balance70751 0.04 .012 .007 1.23 1.71 45.95 25.55 2.99 3.01 3.05 balance30
Page 5 and 6: MachiningRA333 ®RA333 requires low
Page 7: Physical PropertiesRA333 ®Physical
Page 10 and 11: Effect of Elevated Temperature Expo
Page 12 and 13: RA333 ® 11Effect of Cold Drawing o
Page 14 and 15: RA333 ® 13Low Cycle FatigueElevate
Page 16 and 17: RA333 ® 15Rupture StrengthAverage
Page 18 and 19: RA333 ® 17Minimum Creep Rate
Page 20 and 21: RA333 ® 19OxidationRA333 has excel
Page 22 and 23: RA333 ® 21OxidationMetal Dusting1
Page 24 and 25: RA333 ® 23Hot CorrosionHot corrosi
Page 26 and 27: RA333 ® 25Hot CorrosionMaximumTime
Page 28 and 29: RA333 ® 27Aqueous CorrosionRA333 h
Page 32 and 33: RA333 ® 31MetallographyTypical Mic
Page 34: DATA SHEET RA333 ® Temperance, MI

RA333 Data Sheet [Heat Resistant Alloys] - Rolled Alloys

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