Full Description

This part of ISO 3506 specifies the mechanical properties of nuts made of austenitic, martensitic and ferritic grades of corrosion-resistant stainless steels when tested over an ambient temperature range of 15 C to 25 C. Properties will vary at higher or lower temperatures.

It applies to nuts

with nominal thread diameters (d) up to and including 39 mm;of triangular ISO metric threads with diameters (d) and pitches in accordance with ISO 68-1, ISO 261 and ISO 262;of any shape;with width across flats as specified in ISO 272;with nominal heights greater than or equal to 0,5 d.

It does not apply to nuts requiring properties such as

locking abilities;weldability.

This part of ISO 3506 does not define corrosion or oxidation resistance in particular environments.

The aim of this part of ISO 3506 is a classification into property classes of corrosion resistant stainless steel fasteners. Some materials can be used at temperatures down to 200 C, some can be used at temperatures up to +800 C in air. Information on the influence of temperature on mechanical properties is found in annex D.

Corrosion and oxidation performances and mechanical properties for use at elevated or sub-zero temperatures must be the subject of agreement between user and manufacturer in each particular case. Annex E shows how the risk of intergranular corrosion at elevated temperatures depends on the carbon content.

All austenitic stainless steel fasteners are normally non-magnetic in the annealed condition; after cold working, some magnetic properties may be evident (see annex F).

Product Details

Published: 12/01/1997 Number of Pages: 15 File Size: 1 file , 910 KB