CREATE TABLE table_2071644_2 (web_thickness__mm_ VARCHAR, flange_width__mm_ VARCHAR)

What is the web thickness if the flange width is 100?
SELECT web_thickness__mm_ FROM table_2071644_2 WHERE flange_width__mm_ = 100
SELECT "web_thickness__mm_" FROM "table_2071644_2" WHERE "flange_width__mm_" = 100