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Strength

[ Mechanical Properties requirements (Ref. DIN EN ISO 3506) ]

 

Group

Grade

Property Class

Thread Diameter Range

Tensile Strength RM (1) Min N/MM2

Stress Permanent Strain Rp 0.2 (1) Min N/MM2

Elongationn after Fracture A(2) Min MM

Austentic

304/316

50

<39

500

210

0.6d

70

<M24

700

450

0.4d

80

<M24

800

600

0.3d

 

  1. The tensile stress is calculated on the stress area.

  2. To be determined according to test methods on actual screw length and on a prepared test piece is the nominal thread diameter

  3. All tensile stress values are calculated and reported in terms of the nominal tensile stress area of the thread.

  4. The extension measurements are determined in accordance with the test procedure and are on the actual screw or bolt length and not on a prepared test piece gauge length of 5 d of the test piece.

 










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