# Steel qualities

by TSN79
Tags: qualities, steel
 P: 355 In a table of different steel qualities the information about a perticular type of steel can be as follows: Steel type: S235 Tension/Pressure: $$0\pm60$$ $$130\pm130$$ Bending: $$0\pm190$$ $$150\pm150$$ My question is, what do these values tell me? The values are in $$N/mm^2$$
 Emeritus Sci Advisor PF Gold P: 11,154 While I'm not sure I understand what the numbers themselves represent, the approximate value of the quantities seems to be comparable to typical values for steel in MPa, which is the same as N/mm^2. So, my guess is YES.
 Admin P: 21,628 What is the format of the table form where these numbers originate? S235 is a conventional low carbon structural steel (European Standard EN 10025) Grades are: S235 S235JR S235J0 S235J2G3 S235J2G4 Yield strength should be about 235 MPa, UTS about 340-470 MPa. The maximum numbers may be maximum design stresses, but it is hard to tell. The numbers are given as ranges.
PF Gold
P: 1,101

## Steel qualities

I'd guess similarly to design stresses or then something more exotic, like allowable stress amplitudes in fatigue.
Emeritus