CREATE TABLE table_43473 ("Sn/Sb  ( % ) " TEXT, "Liquidat  ( \\u00b0C ) " FLOAT, "Solidat  ( \\u00b0C ) " FLOAT, "Hardness  (  Brinell  ) " FLOAT, "Purpose" TEXT)

What is the sum of Solidat (c) that's purpose is display type, heavy duty jobs, and a hardness (brinell) is smaller than 33?
SELECT SUM("Solidat (\u00b0C)") FROM table_43473 WHERE "Purpose" = 'display type, heavy duty jobs' AND "Hardness ( Brinell )" < '33'
SELECT SUM("Solidat (\u00b0C)") FROM "table_43473" WHERE "Hardness ( Brinell )" < '33' AND "Purpose" = 'display type, heavy duty jobs'