Table:
text: Type metal
Alloys for mechanical composition
Type metal alloys mentioned in the UK-Monotype-caster manuals
Sn_Sb_ Liquidat_C Solidat_C Hardness_Brinell_ Purpose
6/15 261 240 23.0 Routine
10/16 273 240 27.0 Dual (machine & hand composition)
9/19 286 240 28.5 Routine machine composition
13/17 283 240 29.5 Catalogues
12/24 330 240 33 Display type, heavy duty jobs

Question: What is the sum of solidate (c) whose purpose is display type, heavy works and a hardness (Brinell) lower than 33 for the alloys for the mechanical composition of Type Metal?