TIMETAL ® Grade 12
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Catalog excerpts

TIMETAL ® Grade 12 - 1

TIMETAL® Grade 12 (ASTM Grade 12) is a lean titanium alloy with excellent corrosion resistance and higher strength than ASTM Grade 2. TIMETAL ® Grade 12 shows significant improvement over unalloyed titanium, particularly crevice corrosion in hot brines. It also offers excellent corrosion resistance to acids over unalloyed grades. The higher strength than Grade 2 or Grade 7 at room and elevated temperatures allow material and cost saving through use of thinner sections. Grade 12 is approved by ASME Boiler Code for use up to 600°F. PHYSICAL PROPERTIES PROPERTY VALUE English SI Coefficient of Thermal Expansion 10-6/°F (10-6/°C) 5.3 (9.54) Electrical Resistivity, ^Q.cm Specific Heat Capacity, Btu/lb.°F (J/kg) 0.13 (544) Thermal Conductivity A, Btu/ft.h. °F (W/m.K) 11 (19.02) 0.2% Yield Product UTS, ksi Strength, Elongation Form (MPa) ksi (%) Minimum Bend Radius (D/T) Flatten Ability (distance between platens) Tubing: 9 x nominal wall thickness Flaring Ability (% expansion of inside diameter)

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TIMETAL ® Grade 12 - 2

FIGURE 1 E FFE CT OF T E MPE RAT URE AND P H ON CRE VICE CO RROSI ON OF T IT ANI UM (GRA DE 2) CO MPA RE D T O G RA DE 12 IN SAT URAT E D NACL BRI NE FIGURE 2 ST RUCT URA L E FFICIE NCY F O R DE SIGN OF P RE S S URE VE SSE LS (PE R A SME DE SIGN AL LO WA BLE S) no hydrogen pickup or corrosion no corrosion crevice corrosion ASME Design Allowable / Unit.Density ASME Design Allow./Unit Density (ksi/lb/cu (ksi/lb/cu in) in) 120 hydrogen pickup and weight loss crevice corrosion FIGURE 3 E FFE CT OF RE D UCING ACID O N GE NE RA L CORRO SION OF VA RIO US IND UST RIA L T IT ANI UM GRA DE S The data...

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