I couldn't find a reference on the web, but the information you're looking for is easily found in the ASM handbooks. I have in front of me Vol 2 of the ninth ed'n. On pages 817-819 there are a series of graphs showing temperature dependent properties.
Properties depend on how the tungsten piece is fabricated (powder met, drawn wire, etc) but at 1500K, the YM is about 350 GPa