Introduction to ASTM B861 for seamless titanium pipes
ASME SB 861 / ASTM B861, Standard Specification for Titanium and Titanium Alloy Seamless Pipe, ASTM B861 Grade 2 Titanium Pipe is primarily used in heat exchangers in chemical processing due to the superior corrosion resistance of titanium. Covers the requirements for 34 grades of titanium and titanium alloy seamless pipes for general corrosion resistance and high temperature applications.
ASTM B861 Titanium Alloy Seamless Pipe
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Material grade
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Material component
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Gr1/Gr2/Gr3
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unalloyed titanium
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Gr7
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unalloyed titanium plus 0.12 to 0.25% palladium
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Gr9
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titanium alloy (3%aluminum,2.5%vanadium)
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Gr11
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unalloyed titanium plus 0.12 to 0.25%palladium
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Gr12
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titanium alloy(0.3%molybdenum,0.8% nickel)
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Gr16
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unalloyedtitanium plus 0.04-0.08% palladium
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ASTM B861
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Grade
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Commercially Pure(CP) Grades
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Grade 1,Grade 2,Grade 3,Grade 7,Grade 11 (CP Ti-0.15Pd),Grade 16,Grade 17,Grade 26,Grade 27
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Titanium Based Alloys Grades
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Grade 5,Grade 9 ( Ti 3Al-2.5V),Grade 12 (Ti-0.3-Mo-0.8Ni),Grade 19 (Ti Beta C),Grade 23 (Ti 6Al-4V ELI),Grade 28
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ASTM B861 grade2 Chemical composition
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Titanium (Ti)
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Ni
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C
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H
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Fe
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O
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Total
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Balance
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0.03 max
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0.08
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0.015
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0.30max
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0.25
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0.0-0.10
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ASTM B861 grade2 Physical Properties
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Mechanical Property
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Value
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Proof Stress
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275-450 MPa
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Tensile Strength
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345 Min MPa
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Elongation A50 mm
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20 Min %
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