Technical

Usually, titanium stub ends are used with ASME B16.5 carbon steel backing flanges (lap joint flanges) in pipeline to minimize the cost while maintaining excellent corrosion resistance to fluid. The stub ends may be furnished in short pattern or long …

Instantaneous Coefficient of Thermal Expansion *Coefficient A: the instantaneous coefficient of thermal expansion for 9% nickel steel at elevated temperatures, 10-6 mm/mm/°C. Mean Coefficient of Thermal Expansion *Coefficient B: the mean coefficient of thermal expansion for 9% nickel steel in going …

In order to investigate the fracture toughness of 9% nickel steel at low temperature, the specimen’s taken from Q+T pressure vessel plate of ASTM A553 Type I. Compact tension test was conducted on the test piece at subzero temperature -196°C. The …

Tensile tests were conducted on several 9% nickel steel specimens, which are manufactured in accordance with ASTM A353 or ASTM A553 Type I respectively. Typical tensile properties including tensile strength, yield strength, elongation, and reduction in area are presented in …

There are four grades of unalloyed titanium (commercially pure titanium): Grade 1, Grade 2, Grade 3, and Grade 4. The metallographic structure of all grades at room temperature is α phase (HCP). When the temperature is at about 885°C [1625°F], …

The unalloyed titanium refers to commercially pure titanium which has minimum titanium contents ranging from about 98.5 to 99.5 wt%. They are primarily used for corrosion-resistance applications as well as applications requiring high ductility for fabrication but relatively low strength …

Generally, 9% nickel steel pressure vessel plates may be furnished in double-normalized and tempered condition (ASTM A353), quenched and tempered condition (ASTM A553), or direct-quenched and tempered condition (ASTM A844). The microstructure of 9% nickel steel after heat treatment consist of …

The dissolved titanium ion Ti4+ has significant inhibiting effect on corrosion rate of unalloyed titanium in boiling nitric acid solutions. The tabulated values in below table show the corrosion rates of titanium (either Grade 1, 2, 3 or 4) with various titanium …

Unalloyed titanium (ASTM grade 1, 2, 3, 4) has been extensively used for handling and producing nitric acid in applications in which stainless steels have experienced significant uniform or intergranular attack. Titanium offers excellent resistance to HNO3 solutions over the …

ASTM A553, identical with ASME SA-553, is the standard specification covering 8% and 9% nickel alloy steel plates for use in the water quenched and tempered condition intended for the fabrication of welded pressure vessels, especially at low or cryogenic temperatures. …

ASTM A517, identical with ASME SA-517, is the standard specification covering high-strength quenched and tempered alloy steel plates intended for use in fusion welded boilers and other pressure vessels. There are 8 grades available with which small traces of nickel, …

ASTM A515, identical with ASME SA-515, is the standard specification for pressure vessel plates, carbon steel, for intermediate- and higher- temperature service in welded boilers and other pressure vessels. The A515/ SA-515 plates can be classified into 3 grades according …