GB/T 3098.15-2014: Mechanical properties of fasteners Nuts made of stainless-steel

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Scope

This Part of GB/T 3098 specifies the mechanical properties of nuts 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.
This Part of GB/T 3098 applies to nuts.
-- with nominal thread diameter D ≤ 39 mm;
-- of general purpose metric threads with diameters and pitches in accordance with
GB/T 192, GB/T 193 and GB/T 9144;
-- of any shape;
-- with width across flats as specified in GB/T 3104; and
-- with nominal heights m ≥ 0.5D.
It does not apply to nuts requiring properties such as
-- locking abilities, and
-- weldability.
NOTE The designation system of this Part of GB/T 3098 can be used for sizes outside the
limits given in this clause (e.g. D > 39 mm), provided that all applicable mechanical and physical
requirements of the property classes are met.
This Part of GB/T 3098 does not define corrosion or oxidation resistance in particular
environments. However, some information on materials for particular environments is
given in Annex D. Regarding definitions of corrosion and corrosion resistance, see
GB/T 10123.
The aim of this Part of GB/T 3098 is the classification of corrosion-resistant stainless
steel nuts into property classes. 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 E.
Corrosion and oxidation performances and mechanical properties for use at elevated
or sub-zero temperatures can be agreed on between the user and the manufacturer in
each particular case. Annex F 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 can be evident (see Annex G).

Basic Data

Standard ID	GB/T 3098.15-2014 (GB/T3098.15-2014)
Description (Translated English)	Mechanical properties of fasteners Nuts made of stainless-steel
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J13
Classification of International Standard	21.060.20
Word Count Estimation	24,287
Date of Issue	6/24/2014
Date of Implementation	3/1/2015
Older Standard (superseded by this standard)	GB/T 3098.15-2000
Quoted Standard	GB/T 90.3; GB/T 192; GB/T 193; GB/T 230.1; GB/T 231.1; GB/T 3098.2; GB/T 3104; GB/T 4334; GB/T 4340.1; GB/T 5267.4; GB/T 9144
Adopted Standard	ISO 3506-2-2009, MOD
Regulation (derived from)	National Standards Bulletin No. 14 of 2014
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the austenitic, ferritic and martensitic corrosion-resistant stainless steel when tested at an ambient temperature of 10 �� ~ 35 �� conditions, the mechanical properties of nuts. At higher or lower temperatures, the performance may b