A large variety of microstructures, including lamellar, martensitic, equiaxed globular, and bimodal (duplex) microstructures, can be obtained in titanium alloys depending on the thermomechanical processing routes.
Average Grain Size
titanium and titanium alloy Shall be ASTM No. 5 or finer, determined in accordance with ASTM E1 1 2.
Hardness
For tubing less than 0.354 in. [9.00 mm] in inside diameter and for tubing less than 0.065 in. [1.65 mm] in wall thickness, it is permissible to use the Vickers hardness test in lieu of the Rockwell test. Tubes shall have a Vickers hardness number not exceeding the values specified
Chemical Requirements
When agreed upon by the producer and the purchaser and requested by the purchaser in the written purchase order, chemical analysis shall be completed for specific residual elements not listed in this specification.
Product Analysis
Tensile Requirements
Flattening Test
Flaring Test
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 H in. H is calculated as follows: H, in. ~mm! 5 ~11e!t e1t/D (1) where: H = the minimum flattened height, in. (mm), t = the nominal wall thickness, in. (mm), and D = the nominal tube diameter, in. (mm). For Grades 1, 2, 2H, 7, 7H, 11, 13, 14, 16, 16H, 17, 26, 26H, 27, 30, 33, and 39: e 5 0.07 for all diameters For Grade 3, 31, and 34: e 5 0.04 through 1 in. diameter e 5 0.06 over 1 in. diameter For Grades 9, 12, 15, 18, 28, 35, 36, 37, and 38
Materials and Manufacture
Welded tube shall be made from annealed, flat-rolled product by an automatic arc-welding process or other method of welding that will yield a product meeting the tensile requirements found in Table 3 of this specification. Welded tubing shall be heat treated by at least a stress relief after forming and welding. Use of filler material is not permitted
Jiangsu Shengpo New Material Technology Co., Ltd. Was founded in Changshu, Jiangsu, China. The company employs more than 200 and annual output value of more than $100 million.
