Steel qualities


by TSN79
Tags: qualities, steel
TSN79
TSN79 is offline
#1
Jan25-05, 02:11 PM
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:
[tex]0\pm60[/tex]
[tex]130\pm130[/tex]

Bending:
[tex]0\pm190[/tex]
[tex]150\pm150[/tex]

My question is, what do these values tell me? The values are in [tex]N/mm^2[/tex]
Phys.Org News Partner Engineering news on Phys.org
Lifting the brakes on fuel efficiency
PsiKick's batteryless sensors poised for coming 'Internet of things'
Researcher launches successful tech start-up to help the blind
Gokul43201
Gokul43201 is offline
#2
Jan25-05, 05:32 PM
Emeritus
Sci Advisor
PF Gold
Gokul43201's Avatar
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.
Astronuc
Astronuc is offline
#3
Jan25-05, 09:16 PM
Admin
Astronuc's Avatar
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.

PerennialII
PerennialII is offline
#4
Jan28-05, 01:57 AM
Sci Advisor
PF Gold
PerennialII's Avatar
P: 1,101

Steel qualities


I'd guess similarly to design stresses or then something more exotic, like allowable stress amplitudes in fatigue.
Gokul43201
Gokul43201 is offline
#5
Jan29-05, 02:40 PM
Emeritus
Sci Advisor
PF Gold
Gokul43201's Avatar
P: 11,154
Quote Quote by PerennialII
I'd guess similarly to design stresses or then something more exotic, like allowable stress amplitudes in fatigue.
Yeah, the 'plus or minus' seems to suggest fatigue related parameters.


Register to reply

Related Discussions
Steel Block Rotating On A Steel Table Introductory Physics Homework 1
Inorganic dust with life-like qualities Biology 4
Good Qualities To Have General Discussion 24
What Qualities Do You Find Common To Great Science Fiction? Science Fiction Writing 16
Is there any method of selecting against qualities that affect you after breeding? Biology 3