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Modulus of elasticity for carbon steel


I would like to know the modulous of elasticity for carbon steel Thanks lew.

David Dixon
- England


Hi, it's 29E6, David. But what are you going to do with that answer? I am always curious when a question is asked when the answer is in every text on the subject, because I am concerned that I may have misunderstood the inquiry. Thanks.

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey


Hello David!

Carbon steel has a Young's modulus of about 30 million psi. A good source for general information like this is the Engineering Fundamentals website, at www.efunda.com. There's a lot of good basic information there, although finishing.com is far superior regarding finishing.

Good luck!

lee gearhart
Lee Gearhart
metallurgist - E. Aurora, New York


205 GPa

Bill Reynolds
Bill Reynolds [deceased]
consultant metallurgist - Ballarat, Victoria, Australia
We sadly relate the news that Bill passed away on Jan. 29, 2010.


I checked this site because the value has slipped my mind as well. 3 responses and 3 different answers. What's going on here?

Matthew Provance
- Athens, OH, United States


Sorry, Matthew. Lee's 30 million is the most common value used in the English system, but you will see 29 million in some books. But that's an excuse; the answer to the question asked is 30 million in English units.

Bill's value comes out to 29.7 million in English units; it's an approximation in a different system of units. Remember that E is temperature dependent.

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

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