What is the yield strength for ASTM grade 25 iron?

Question

I am asked to designg a shaft with a safety factor of 3, but the problem doesn't provide yield strength, it only states it is ASTM grade 25 iron, I don't even know what that means

Answer 1

What is the ASTM standard for which grade is 25?

Structural Steel - ASTM A1008/A1008M SS (Grade 25, 30, 33, 40, 80)

Steel : Sheet, Cold-Rolled, Carbon, Structural

http://www.ussteel.com/metal/techbltn/AS...

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Answer 2

American Society for Testing and Materials

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