NBN EN ISO 3506-4 : 2010

Foreword
Introduction
1 Scope
2 Normative references
3 Designation, marking and finish
   3.1 Designation
   3.2 Marking
   3.3 Finish
4 Chemical composition
5 Mechanical properties and performance
   5.1 General
   5.2 Mechanical properties
   5.3 Thread forming capability
6 Test methods
   6.1 Surface hardness test
   6.2 Core hardness test
   6.3 Torsional strength test
   6.4 Drive test
Annex A (informative) Description of groups and grades of
        stainless steels
Annex B (informative) Stainless steels for cold heading
        and extruding
Annex C (informative) Time-temperature diagram of
        intergranular corrosion in austenitic stainless
        steels, grade A2 (18/8 steels)
Annex D (informative) Austenitic stainless steels with
        particular resistance to chloride-induced
        stress corrosion
Annex E (informative) Magnetic properties for austenitic
        stainless steels
Bibliography

Defines the mechanical properties of tapping screws made from austenitic, martensitic and ferritic grades of corrosion-resistant stainless steels when tested at an ambient temperature range of 15 degrees C to 25 degrees C.