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PROPERTY CLASSES
FOR BOLTS AND SCREWS
MATERIAL PROPERTIES
Resistencia ultima a la traccio
Tensile Strength (Rm)
LIMIT ELÀSTIC E
Yield Strength (Re)
N/mm
2
N/mm
2
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