Temper condition: annealed
Specs : according to ASTM B708 -98 UNS R05200 & ASTM B708 -98 UNS R05400.
Chemical composition : 
            O         0.0150 %max    (0.0300%max for R05400)
            C         0.0100 %max
            N         0.0100 %max
            H         0.0015 %max
            Fe       0.0100%max
            Ni        0.0100%max
            Si        0.0050 %max
            Ti        0.0100 %max
            Mo       0.0200 %max
            W        0.0500 %max
            Nb       0.1000 %max
            Ta balance (typically 99.92%)
Physical & Mechanical property : 
            Tensile strength  172 MPa min.
            Yield strength     103 MPa min.
            Elongation          30%min 
Size available : tailored to customer's blueprint.
 

Types of Tantalum Flanges available : Tantalum long weld neck flanges, tantalum pipe flanges, tantalum blind flanges, tantalum welding neck flanges, tantalum slip on flanges, tantalum socket weld flanges, tantalum threaded flanges, tantalum lap joint flanges, tantalum welded flanges, tantalum plate flanges, tantalum screwed flanges, tantalum reducing flanges, tantalum DIN flanges, tantalum ANSI flanges, tantalum metal flanges, tantalum ring joint flanges, tantalum welding flanges, tantalum ASME flanges, tantalum ASTM flanges, tantalum PN flanges, tantalum puddle flanges, tantalum round flanges, tantalum split flanges, tantalum cast flanges, tantalum orifice flange assembly,  tantalum PTFE lined reducing flanges, tantalum SO flanges, tantalum flange connector, etc.,
 

Standard Specification ASTM B 708 -05 for Tantalum Ribbon, Tantalum Alloy Ribbon, Tantalum Strip, Tantalum Alloy Strip, Tantalum Foil, Tantalum Alloy Foil, Tantalum Sheet, Tantalum Alloy Sheet, Tantalum Plate, Tantalum Alloy Plate.

This specification covers unalloyed and alloyed Tantalum Ribbon, Tantalum Alloy Ribbon, Tantalum Strip, Tantalum Alloy Strip, Tantalum Foil, Tantalum Alloy Foil, Tantalum Sheet, Tantalum Alloy Sheet, Tantalum Plate, Tantalum Alloy Plate as follows:
1. ASTM B 708 -05 UNS R05200, unalloyed tantalum, electron-beam furnace or vacuum-arc melt, or both.
2. ASTM B 708 -05 UNS R05400, unalloyed tantalum, powder-metallurgy consolidation.
3. ASTM B 708 -05 UNS R05255, tantalum alloy, 90% tantalum 10% tungsten, electron-beam furnace or vacuum-arc melt, or both.
4. ASTM B 708 -05 UNS R05252, tantalum alloy, 97.5% tantalum 2.5% tungsten, electron-beam furnace or vacuum-arc melt, or both.
5. ASTM B 708 -05 UNS R05240, tantalum alloy, 60% tantalum 40% columbium, electron-beam furnace or vacuum-arc melt.