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Re: European steel grades

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     In European steel grades the first figure multiplied by 100 gives the 
     ultimate tensile stress in MPA (N/mm2); the first and the second figure 
     multiplied by each other and then by ten gives the 0.2 yield stress.
     
     Example 4.6 : 4*100=400 MPa  -  4*6*10=240 MPa
     
             8.8 : 8*100=800 MPa  -  8*8*10=640 MPa
     
     Normally the codes give more accurate figures, depending on the plate 
     thickness etc.


______________________________ Reply Separator _________________________________
Subject: <No subject>
Author:  seaint(--nospam--at)seaint.org (Alberto Guida) at RAY_REC_SMTP
Date:    08-10-98 12:51 PM


I am using a british program for steel design. British Code BS5950 (1990) uses 
grade 3.6, 4.6, 4.8, ..., for bolts.
Some body knows what this means?
     
Thank you very much
     
Alberto Guida