Glass 10000 to 9324 -- 7939 Lead ---- to 8561 -- 8950 Tin ---- to 7667 -- 7633 Stone soft ---- to 7644 -- 7193 Porcelain ---- to 7364 -- 7059 Antimony ---- to 7333 -- 6170 Gypsum ---- to 4568 -- 5000 Wood ---- to 2368 -- 4828