Mechanical properties of screws // STEEL

Basis are ISO 898-1 & EN 20898-1

Class
3.6 4.6 4.8 5.6 5.8 6.8 8.8 8.8 9.8 10.9 12.9
            (d≤16) (d>16) d≤16    
Tensile strength Rm [MPa] nom. 300 400 500 600 800 800 900 1000 1200
min. 330 400 420 500 520 600 800 830 900 1040 1220
Vicker hardness HV F≥98 N min. 95 120 130 155 160 190 250 255 290 320 385
max. (220) 250 250 335 360 380 435
Brinell hardness HB F=30 D2 min. 90 114 124 147 152 181 238 242 276 304 366
max. (209) 238 304 318 342 361 414

() strongly recomended to check with the standard

The values in the table are just for your orientation and should not be use with out compare the relevant standard.

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