PROPERTY CLASSES
FOR BOLTS AND SCREWS
MATERIAL PROPERTIES
Resistencia ultima a la traccio
Tensile Strength (Rm)
LIMIT ELÀSTIC E
Yield Strength (Re)
N/mm2 N/mm2
Made of
unalloyed and alloyed steels
Ordinary 3.6 300
4.6 400
4.8 400
5.6 500
5.8 500
6.8 600
High resistance 8.8 800
9.8 900
10.9 1000
12.9 1200
Made of
stainless steels 1)
A2-50 500 210
A4-50 500 210
A2-70 700 450
1) Material properties apply to threads ≤ M20