ASTM B338 PDF

ASTM B standard for seamless and welded titanium and titanium alloy tubes for condensers and heat exchangers ASTM B Standard Specification for Seamless and Welded Titanium and Titanium Alloy Tubes for Condensers and Heat Exchangers Abstract This specification covers 28 grades of seamless and welded titanium alloy tubes for surface condensers, evaporators, and heat exchangers. Seamless tube shall be made from hollow billet by any cold reducing or cold drawing process that will yield a product meeting the requirements prescribed. Welded tube shall be made from flat-rolled product by an automatic arc-welding process. The welded tube shall be sufficiently cold worked to final size in order to transform the cast weld microstructure into a typical equiaxed microstructure in the weld upon subsequent heat treatment. The titanium shall conform to the chemical requirements prescribed. The room temperature tensile properties of the tube in the condition normally supplied shall conform to the requirements prescribed.

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Savoy Piping Inc. The development of many different alloys has extended the application of titanium in industries ranging from industrial and chemical processing to power generation. The grade indicates the testing methods required for a given application. A common titanium mill product is titanium tubes, which are employed in a variety of products owing to its superior corrosion resistance and strength-to-weight ratio. The American Society of Mechanical Engineers has approved most titanium grades, meaning that more options are available for various projects.

Although grades such as 1, 2, 3, 7, 9, 11 and others are usable, grade 2 is suitable for most instances. The ready availability of grade 2 makes it a preferable material for quick production runs and larger orders. Determining how a grade will exactly be used is essential prior to selecting any grade.

Grades 7, 12, 16, or 26 can be used to fabricate titanium pipes for use in areas demanding greater corrosion resistance. Grades 3 and 12 may be a preferable material for pipes requiring more strength. Seamless tube shall be made from hollow billet by any cold reducing or cold drawing process that will yield a product meeting the requirements prescribed.

Welded tube shall be made from flat-rolled product by an automatic arc-welding process. The welded tube shall be sufficiently cold worked to final size in order to transform the cast weld microstructure into a typical equiaxed microstructure in the weld upon subsequent heat treatment.

The titanium shall conform to the chemical requirements prescribed. The room temperature tensile properties of the tube in the condition normally supplied shall conform to the requirements prescribed. Tubing shall withstand, without cracking, flattening under a load applied gradually at room temperature until the distance between the load platens is not more than the required height.

Welded tube shall be subjected to a reverse flattening test in accordance with supplement II of test methods and definitions A Welded tubing shall be tested using both a non-destructive electromagnetic test and an ultrasonic test method. Welded tubing shall be tested with a hydrostatic or pneumatic test method. Seamless tubing shall be tested with an electromagnetic or hydrostatic or pneumatic test method.

This specification2 covers the requirements for 28 grades of titanium and titanium alloy tubing intended for surface condensers, evaporators, and heat exchangers, as follows: 1.

Unalloyed titanium, 1. Unalloyed titanium plus 0. Titanium alloy 0. Titanium alloy 4. Titanium alloy 1.

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ASME SB-338 / ASTM B338

More B Seamless tube shall be made from hollow billet by any cold reducing or cold drawing process that will yield a product meeting the requirements prescribed. Welded tube shall be made from flat-rolled product by an automatic arc-welding process. The welded tube shall be sufficiently cold worked to final size in order to transform the cast weld microstructure into a typical equiaxed microstructure in the weld upon subsequent heat treatment.

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ASTM B338 Grade 2

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ASTM B338 – 凝縮器および熱交換器のためのシームレスおよび溶接チタンおよびチタン合金管の標準仕様書

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