NF EN ISO 3506-4

July 2003

Standard Cancelled

Mechanical properties of corrosion-resistant stainless steel fasteners - Part 4 : tapping screws

ISO 3506-4 specifies 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 °C to 25 °C. Properties vary between higher and lower temperatures. It applies to tapping screws with threads from ST2,2 up to and including ST8 in accordance with ISO 1478. It does not apply to screws with special properties such as weldability. ISO 3506-4 does not define corrosion or oxidation resistance in particular environments, however some information on materials for particular environments is given in an annex. The aim of ISO 3506-4 is a classification into property classes of corrosion resistant stainless steel fasteners.

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Main informations

Collections

National standards and national normative documents

Publication date

July 2003

Number of pages

27 p.

Reference

NF EN ISO 3506-4

ICS Codes

21.060.10 Bolts, screws, studs

Classification index

E25-651

Print number

1 - 28/10/2003

International kinship

ISO 3506-4:2003

European kinship

EN ISO 3506-4:2003

Sumary

Mechanical properties of corrosion-resistant stainless steel fasteners - Part 4 : tapping screws

It applies to tapping screws with threads from ST2,2 up to and including ST8 in accordance with ISO 1478. It does not apply to screws with special properties such as weldability.

ISO 3506-4 does not define corrosion or oxidation resistance in particular environments, however some information on materials for particular environments is given in an annex.

The aim of ISO 3506-4 is a classification into property classes of corrosion resistant stainless steel fasteners.

Standard replaced by (1)

NF EN ISO 3506-4

January 2010

Standard Current

Mechanical properties of corrosion-resistant stainless steel fasteners - Part 4 : tapping screws

ISO 3506-4:2009 specifies the mechanical properties of tapping screws made of austenitic, martensitic and ferritic steel grades of corrosion-resistant stainless steels, when tested over an ambient temperature range of 10 °C to 35 °C. Properties vary at higher or lower temperatures. It applies to tapping screws with threads from ST2,2 up to and including ST8, in accordance with ISO 1478. It does not apply to screws with special properties such as weldability.

Table of contents

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Avant-propos
iv
Introduction
v
Domaine d'application
1
2 Références normatives
1
3 Désignation, marquage et finition
2
3.1 Désignation
2
3.2 Marquage
3
3.3 Finition
3
4 Composition chimique
3
5 Caractéristiques et performances mécaniques
4
5.1 Généralités
4
5.2 Caractéristiques mécaniques
5
5.3 Capacité de formage du filetage
5
6 Méthodes d'essai
5
6.1 Essai de dureté superficielle
5
6.2 Essai de dureté à caeur
6
6.3 Essai de résistance à la torsion
6
6.4 Essai de taraudage
7
Annexe A (informative) Description des groupes et nuances d'aciers inoxydables
9
Annexe B (informative) Aciers inoxydables pour frappe à froid et extrusion (Extrait de l'ISO 4954:1993)
12
Annexe C (informative) Diagramme de la température en fonction du temps de la corrosion intergranulaire dans les aciers inoxydables austénitiques, nuance A2 (aciers 18/8)
14
Annexe D (informative) Aciers inoxydables austénitiques offrant une résistance particulière à la corrosion par le chlore (Extrait de l'EN 10088-1:1995)
15
Annexe E (informative) Propriétés magnétiques des aciers inoxydables austénitiques
16
Bibliographie
17

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