EN 1993-1-4:2006

SLOVENSKI STANDARD
01-marec-2007
1DGRPHãþD
SIST ENV 1993-1-4:2001
Evrokod 3: Projektiranje jeklenih konstrukcij - 1-4. del: Splošna pravila - Dodatna
pravila za nerjavna jekla
Eurocode 3 - Design of steel structures - Part 1-4: General rules - Supplementary rules
for stainless steels
Eurocode 3 - Bemessung und Konstruktion von Stahlbauten - Teil 1-4: Allgemeine
Bemessungsregeln - Ergänzende Regeln zur Anwendung von nichtrostender Stählen
Eurocode 3 - Calcul des structures en acier - Partie 1-4: Regles générales - Regles
supplémentaires pour les aciers inoxydables
Ta slovenski standard je istoveten z: EN 1993-1-4:2006
ICS:
77.140.20 Visokokakovostna jekla Stainless steels
91.010.30 7HKQLþQLYLGLNL Technical aspects
91.080.10 Kovinske konstrukcije Metal structures
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 1993-1-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2006
ICS 91.040.01; 91.080.10 Supersedes ENV 1993-1-4:1996
English Version
Eurocode 3 - Design of steel structures - Part 1-4: General rules
- Supplementary rules for stainless steels
Eurocode 3 - Calcul des structures en acier - Partie 1-4: Eurocode 3 - Bemessung und Konstruktion von
Règles générales - Règles supplémentaires pour les aciers Stahlbauten - Teil 1-4: Allgemeine Bemessungsregeln -
inoxydables Ergänzende Regeln zur Anwendung von nichtrostender
Stählen
This European Standard was approved by CEN on 9 January 2006.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
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Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1993-1-4:2006: E
worldwide for CEN national Members.

EN 1993-1-4: 2006 (E)
Contents Page
Foreword 3
1 General 4
1.1 Scope 4
1.2 Normative references 4
1.3 Assumptions 5
1.4 Distinction between principles and application rules 5
1.5 Definitions 5
1.6 Symbols 5
2 Materials 6
2.1 Structural stainless steels 6
2.2 Bolts 8
2.3 Welding consumables 9
3 Durability 9
4 Serviceability limit states 10
4.1 General 10
4.2 Determination of deflections 10
5 Ultimate limit states 12
5.1 General 12
5.2 Classification of cross-sections 12
5.3 Resistance of cross-sections 17
5.4 Buckling resistance of members 18
5.5 Uniform members in bending and axial compression 20
5.6 Shear resistance 21
5.7 Transverse web stiffeners 21
6 Connection design 22
6.1 General 22
6.2 Bolted connections 22
6.3 Design of welds 23
7 Design assisted by testing 23
8 Fatigue 23
9 Fire resistance 23
Annex A [informative] Durability 24
A.1 Introduction 24
A.2 Types of corrosion 25
A.3 Levels of risk 27
A.4 Selection of materials 27
A.5 Design for corrosion control 30
A.6 Connections 31
Annex B [informative] Stainless steel in the work hardened condition 34
B.1 General 34
B.2 Work hardening from cold rolling 34
B.3 Work hardening from fabrication 34
Annex C [informative] Modelling of material behaviour 35
C.1 General 35
C.2 Material properties 35
EN 1993-1-4: 2006 (E)
Foreword
This European Standard EN 1993-1-4, Eurocode 3: Design of steel structures: Part 1-4 General Rules –
Supplementary rules for stainless steels, has been prepared by Technical Committee CEN/TC250 « Structural
Eurocodes », the Secretariat of which is held by BSI. CEN/TC250 is responsible for all Structural Eurocodes.

This European Standard shall be given the status of a National Standard, either by publication of an identical
text or by endorsement, at the latest by April 2007 and conflicting National Standards shall be withdrawn
at latest by March 2010.
This Eurocode supersedes ENV 1993-1-4.

According to the CEN-CENELEC Internal Regulations, the National Standard Organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and United Kingdom.

National Annex for EN 1993-1-4

This standard gives alternative procedures, values and recommendations with notes indicating where national
choices may have to be made. The National Standard implementing EN 1993-1-4 should have a National
Annex containing all Nationally Determined Parameters to be used for the design of steel structures to be
constructed in the relevant country.

National choice is allowed in EN 1993-1-4 through clauses:
– 2.1.4(2)
– 2.1.5(1)
– 5.1(2)
– 5.5(1)
– 5.6(2)
– 6.1(2)
– 6.2(3)
EN 1993-1-4: 2006 (E)
1 General
1.1 Scope
(1) This Part 1.4 of EN 1993 gives supplementary provisions for the design of buildings and civil
engineering works that extend and modify the application of EN 1993-1-1, EN 1993-1-3, EN 1993-1-5 and EN
1993-1-8 to austenitic, austenitic-ferritic and ferritic stainless steels.

NOTE 1: Information on the durability of stainless steels is given in Annex A.

NOTE 2: The execution of stainless steel structures is covered in EN 1090.

NOTE 3: Guidelines for further treatment, including heat treatment, are given in EN 10088.

1.2 Normative references
This following normative documents contain provisions which, through reference to this text, constitute
provisions of this European Standard. For dated references, subsequent amendments to or revisions of any of
these publications do not apply. However, parties to agreements based on this European Standard are
encouraged to investigate the possibility of applying the most recent editions of the normative documents
indicated below. For undated references, the latest edition of the normative document referred to applies.

EN 1990 Eurocode 0: Basis of structural design
EN 508-3 Roofing products from metal sheet. Specification for self-supporting products of steel,
aluminium or stainless steel sheet. Stainless steel;
EN 1090-2 Execution of steel structures and aluminium structures – Part 2: Technical requirements
for steel structures;
EN 1993-1-1 Design of steel structures: General rules and rules for buildings;
EN 1993-1-2 Design of steel structures: Structural fire design;
EN 1993-1-3 Design of steel structures: Cold formed thin gauge members and sheeting;
EN 1993-1-5 Design of steel structures: Plated structural elements;
EN 1993-1-6 Design of steel structures: Strength and stability of shell structures;
EN 1993-1-8 Design of steel structures: Design of joints;
EN 1993-1-9 Design of steel structures: Fatigue;
EN 1993-1-10 Design of steel structures: Material toughness and through-thickness properties;
EN 1993-1-11 Design of steel structures: Design of structures with tension components made of steel;
EN 1993-1-12 Design of steel structures: Additional rules for the extension of EN 1993 up to steel grades
S 700;
EN ISO 3506-1 Mechanical properties of corrosion resistant stainless steel fasteners – Part 1: Bolts,
screws and studs;
EN ISO 3506-2 Mechanical properties of corrosion resistant stainless steel fasteners – Part 2: Nuts
EN ISO 3506-3 Mechanical properties of corrosion resistant stainless steel fasteners – Part 3: Set screws
and similar fasteners under tensile tests;
EN ISO 7089 Plain washers - Normal series - Product grade A;
EN ISO 7090 Plain washers, chamfered - Normal series - Product grade A;
EN ISO 9445 Continuously cold-rolled stainless steel narrow strip, wide strip, plate/sheet and cut lengths
- Tolerances on dimensions and form
EN 10029 Specification for tolerances on dimensions, shape and mass for hot rolled steel plates
3 mm thick or above;
EN 1993-1-4: 2006 (E)
EN 10052 Vocabulary of heat treatment terms for ferrous products;
EN 10088-1 Stainless steels – Part 1: List of stainless steels;
EN 10088-2 Stainless steels – Part 2: Technical delivery conditions for sheet/plate and strip for
general purposes;
EN 10088-3 Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars,
rods and sections for general purposes;
EN 10162 Cold rolled steel sections. Technical delivery conditions. Dimensional and cross-sectional
tolerances;
EN 10219-2 Cold formed welded structural sections of non-alloy and fine grain steels. Tolerances,
dimensions and sectional properties;
1.3 Assumptions
(1) In addition to the general assumptions of EN 1990 the following assumptions apply:
- fabrication and erection complies with EN 1090-2.

1.4 Distinction between principles and application rules

(1) The rules in EN 1990 clause 1.4 apply.
1.5 Definitions
(1) The rules in EN 1990 clause 1.5 apply.

(2) Unless otherwise stated, the vocabulary of treatment terms for ferrous products used in EN 10052
applies.
1.6 Symbols
In addition to those given in EN 1990, EN 1993-1-1, EN 1993-1-3, EN 1993-1-5 and 1993-1-8, the following
symbols are used:
f reduced value of bearing strength
u,red
E secant modulus of elasticity used for serviceability limit state calculations
s,ser
E secant modulus corresponding to the stress in the tension flange
s,1
E secant modulus corresponding to the stress in the compression flange
s,2
σ
serviceability design stress
1,Ed,ser
n coefficient
EN 1993-1-4: 2006 (E)
2 Materials
2.1 Structural stainless steels
2.1.1 General
(1) The provisions given in this Part 1.4 should be applied only to design using austenitic, austenitic-ferritic
and ferritic stainless steels.

(2) The nominal values of the material properties given in 2.1.2 should be used as characteristic values in
structural design calculations.

(3) For further information about material properties reference should be made to EN 10088.

(4) The design provisions specified in this Part 1.4 are applicable for material of nominal yield strength f
y
up to and including 480 N/mm .

NOTE: Rules for the use of work hardened material with f > 480 N/mm are given in Informative
y
Annex B.
(5) The higher strength of other materials (see 2.1.2 and Annex B) may be taken into account in the design
provided that doing so is justified by appropriate tests in accordance with Section 7.

2.1.2 Material properties for stainless steel

(1) In design calculations the values should be taken as follows, independent of the direction of rolling:
- yield strength f : the nominal stress (0,2% proof stress) specified in Table 2.1;
y
- ultimate tensile strength f : the nominal ultimate tensile strength specified in Table 2.1.
u
(2) The ductility requirements in EN 1993-1-1, clause 3.2.2 also apply to stainless steels. Steels conforming
with one of the steel grades listed in Table 2.1 should be accepted as satisfying these requirements.

(3) For structural hollow sections, the strength values given in Table 2.1 for the relevant product form of the
base material (cold-rolled strip, hot rolled strip or hot rolled plate) should be used.

(4) Higher strength values derived from cold working the base material may be used in design provided they
are verified by tests on coupons taken from the structural hollow section in accordance with Section 7.

(5) For cold worked material, the material tests given in the material certificate required according to EN
1090, should be in such a direction that the strength values used in design are independent of the direction of
rolling or stretching.
EN 1993-1-4: 2006 (E)
Table 2.1: Nominal values of the yield strength f and the ultimate tensile strength
y
1)
f for structural stainless steels to EN 10088
u
Product form
Bars, rods and
Cold rolled strip Hot rolled strip Hot rolled plate
sections
Type of
Nominal thickness t
stainless Grade
steel t ≤ 6 mm t ≤ 12 mm t ≤ 75 mm t ≤ 250 mm
f f f f f f f f
y u y u y u y u
2 2 2 2 2 2 2 2
N/mm N/mm N/mm N/mm N/mm N/mm N/mm N/mm
3) 3) 4) 4)
1.4003 280 450 280 450 250 450 260 450
Ferritic
3) 3) 4) 4)
1.4016 260 450 240 450 240 430 240 400
steels
1.4512 210 380 210 380 - - - -
1.4306 180 460
220 520 200 520 200 500
1.4307 175 450
1.4541
190 500
1.4301 230 540 210 520 210 520
1.4401
200 500
1.4404 530 530
240 220 220 520
1.4539 230 530
Austenitic
1.4571 540 540
steels
1.4432 200 500
240 550 220 550 220 520
1.4435
1.4311 290 550 270 550 270 550 270 550
1.4406 300 280 280
580 580 580
1.4439 290 270 270 280 580
1.4529 300 650 300 650 300 650
1.4547 320 650 300 650 300 650 300 650
1.4318 350 650 330 650 330 630 - -
2) 2)
Austenitic 1.4362 420 600 400 600 400 630 400 600
-ferritic
1.4462 480 660 460 660 460 640 450 650
steels
1)
The nominal values of f and f given in this table may be used in design without taking special account of
y u
anisotropy or strain hardening effects.
2)
t ≤ 160 mm
3)
t ≤ 25 mm
4)
t ≤ 100 mm
2.1.3 Design values of material coefficients

(1) The following values of the material coefficients may be assumed for the global analysis and in
determining the resistances of members and cross-sections:

- Modulus of elasticity, E:
E = 200 000 N/mm for the austenitic and austenitic-ferritic
...