Tenacity. Part 3
Description
This section is from the book "The Engineer's And Mechanic's Encyclopaedia", by Luke Hebert. Also available from Amazon: Engineer's And Mechanic's Encyclopaedia.
Tenacity. Part 3
lbs. | |||||
29 1/4 | Emerson. | ||||
Do. | do. | Tin | do. | 49 1/4 | " |
Do. | do. | do. | 299 1/4 | " | |
Do. | do. | do. | 360 | " | |
lbs. | |||||
A wire of one-tenth inch diameter of Silver breaks with | . 370 | Emerson. | |||
Do. | do. | do. | . 450 | " | |
Round bar, 1 inch | do. | " | do. | . 63320 | Rumford. |
The relative cohesive strength of the metals are, according to Sickengen, as follow: -
Gold . . . . .. . . . . . . . . .. . | 150,955 |
Silver . . . .. . . . . . . . . . . . | 190,771 |
Platina . . . .. . . . . . . . .. . . | 262,361 |
Copper . . . .. . . . . . . . .. . | 304,696 |
Soft Iron . . . .. . . . . . . . . | 362,927 |
Hard Iron . . . .. . . . . . .. . | 559,880 |
But their hardness, according to Cavallo, follows this order, viz., Iron, Platinum, Copper, Silver, Gold, Tin, Lead.
Banks observes that iron is about four times as strong as oak, and six times as strong as deal. Wood is from seven to twenty times weaker transversely than longitudinally. It becomes stronger both ways when dry.
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