EN 1993-1-4:2006/A1:2015

Eurocode 3 - Design of steel structures - Part 1-4: General rules - Supplementary rules for stainless steels

- Grades of stainless steel covered in EN 1993-1-4
- Section classification
- Shear buckling
- Cold worked grads (including undermatched welding)
- Grade selection and durability

Eurocode 3: Bemessung und Konstruktion von Stahlbauten - Teil 1-4: Allgemeine Bemessungsregeln - Ergänzende Regeln zur Anwendung von nichtrostenden Stählen

Eurocode 3 - Calcul des structures en acier - Partie 1- 4 : Règles générales - Règles supplémentaires pour les aciers inoxydables

Evrokod 3: Projektiranje jeklenih konstrukcij - 1-4. del: Splošna pravila - Dodatna pravila za nerjavna jekla

General Information

• Status: Withdrawn
• Publication Date: 16-Jun-2015
• Withdrawal Date: 13-Apr-2025
• ICS: 91.010.30 - Technical aspects
• ICS: 91.040.01 - Buildings in general
• ICS: 91.080.10 - Metal structures
• ICS: 91.080.13 - Steel structures
• Technical Committee: CEN/TC 250 - Structural Eurocodes
• Drafting Committee: CEN/TC 250/SC 3 - Eurocode 3: Design of steel structures
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 05-Mar-2025
• Completion Date: 14-Apr-2025
• Ref Project: SIST EN 1993-1-4:2007/A1:2015 - Eurocode 3 - Design of steel structures - Part 1-4: General rules - Supplementary rules for stainless steels

Relations

• Replaced By: EN 1993-1-4:2025 - Eurocode 3 - Design of steel structures - Part 1-4: Stainless steel structures
• Effective Date: 12-Mar-2025
• Amends: EN 1993-1-4:2006 - Eurocode 3 - Design of steel structures - Part 1-4: General rules - Supplementary rules for stainless steels
• Effective Date: 11-Dec-2013

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2015
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 nichtrostenden Stählen
Eurocode 3 - Calcul des structures en acier - Partie 1-4: Règles générales - Règles
supplémentaires pour les aciers inoxydables
Ta slovenski standard je istoveten z: EN 1993-1-4:2006/A1:2015
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 1993-1-4:2006/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2015
ICS 91.010.30; 91.080.10
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 Stahlbauten
Règles générales - Règles supplémentaires pour les aciers - Teil 1-4: Allgemeine Bemessungsregeln - Ergänzende
inoxydables Regeln zur Anwendung von nichtrostenden Stählen
This amendment A1 modifies the European Standard EN 1993-1-4:2006; it was approved by CEN on 1 March 2015.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such
national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This amendment 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 CEN-CENELEC Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1993-1-4:2006/A1:2015 E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Modification to the Foreword .4
2 Modifications to 1.2, Normative references .4
3 Modifications to 2.1.1, General .4
4 Modifications to 2.1.2, Material properties for stainless steel .5
5 Modification to 2.1.4, Fracture toughness .6
6 Modification to 2.3, Welding consumables .6
7 Modification to Clause 3, Durability .7
8 Modification to 5.1, General .7
9 Modifications to 5.2.2, Classification of compression elements .7
10 Modification to 5.2.3, Effective widths in Class 4 cross-sections .9
11 Modifications to 5.6, Shear resistance .9
12 Modification to 6.3, Design of welds . 10
13 Modification to Clause 7, Design assisted by testing . 10
14 Modification to Annex A, Selection of materials and durability . 10
15 Modification to Annex B, Stainless steel in the work hardened condition . 16
16 Modification to B.1, General . 16
17 Modification to B.2, Work hardening from cold rolling. 16
18 Modifications to B.3 (i.e. new Clause B.2), Work hardening from fabrication . 16

Foreword
This document (EN 1993-1-4:2006/A1:2015) has been prepared by Technical Committee CEN/TC 250
“Structural Eurocodes”, the secretariat of which is held by BSI.
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 June 2016, and conflicting national standards shall be withdrawn at
the latest by June 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
1 Modification to the Foreword
nd
In the Foreword, in the section “National Annex for EN 1993-1-4”, in the 2 paragraph, add the following
clauses for national choices at the end of the list:
“
— 7(1),
— A.2(8) and
— A.3, Table A.4.”.
2 Modifications to 1.2, Normative references
Replace “EN 1993-1-1” with “EN 1993-1-1:2005”.
Replace the following references:
“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;”
with the following one:
“EN 10088 (all parts), Stainless steels”.
3 Modifications to 2.1.1, General
Replace Paragraph (1):
“(1) The provisions given in this Part 1-4 should be applied only to design using austenitic, austenitic-ferritic and ferritic
stainless steels.”
with:
“(1) The design provisions specified in this Part 1-4 are applicable for stainless steel material in the annealed condition in
accordance with Table 2.1 and for austenitic stainless steel material in the cold worked condition in accordance with
Table 2.2.
The typical grades used for the construction of building structures are listed in Tables 2.1 and 2.2. The design rules in this
standard may also be applied to other grades in EN 10088–4 and EN 10088–5, provided the relevant partial factor (γ ) is
M
increased by 10 %. Specialist advice should be sought regarding the durability, fabrication, weldability, fatigue resistance
and high temperature performance of these grades, if appropriate.”.
In Paragraph (3), replace “EN 10088” with “EN standards”.
Delete Paragraphs (4) and (5).
4 Modifications to 2.1.2, Material properties for stainless steel
Replace Paragraphs (1) to (5), including Table 2.1, with the following text:
“(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 Tables 2.1 and 2.2;
y
— ultimate tensile strength f : the nominal ultimate tensile strength specified in Tables 2.1 and 2.2.
u
(2) The ductility requirements in EN 1993-1-1:2005, 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. The steels listed in Table 2.2
should have declared properties that meet the ductility requirements given in EN 1993-1-1.
(3) Higher strength values, for example derived from cold working the base material, may be used in design provided
they are verified by tests in accordance with Clause 7.
Table 2.1 — Nominal values of the yield strength f and the ultimate tensile strength f for structural stainless
y u
a
steels to EN 10088
Product form
Bars, rods and
Cold rolled strip Hot rolled strip Hot rolled plate
sections
Type of
Nominal thickness t
stainless Grade
steel
t ≤ 8 mm t ≤ 13,5 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
c c d d
1.4003 280 450 280 450 250 450 260 450
Ferritic
c c d d
1.4016 260 450 240 450 240 430 240 400
steels
1.4512 210 380 210 380 - - - -
1.4306 180 460
1.4307 220 520 200 520 200 500 175 500
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
Austenit
ic steels
1.4571 540 540
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
580 580 580 280 580
1.4439 290 270 270
b b
1.4529 - - - - 300 650 300 650
1.4547 320 650 300 650 300 650 300 650
1.4318 350 650 330 650 330 630 - -
e e f f g g b b
1.4062 530 700 480 680 450 650 380 650
e e f f b b
1.4162 450 650
530 700 480 680 450 650
Austenit
e e f f b b
1.4482 500 700 480 660 450 650 400 650
ic-
ferritic e e b b
1.4662 550 750 550 750 480 680 450 650
steels
b b
1.4362 450 650 400 650 400 630 400 600
b b
1.4462 500 700 460 700 460 640 450 650
a
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.
b
t ≤ 160 mm
c
t ≤ 25 mm
d
t ≤ 100 mm
e
t ≤ 6,4 mm
f
t ≤ 10 mm
2 2
g
t ≤ 50 mm (f = 430 N/mm and f = 625 N/mm for 50 mm < t ≤ 75 mm)
y u
Table 2.2 —Nominal values of the yield strength f and the ultimate tensile strength f for structural stainless
y u
steels to EN 10088 in the cold worked condition
Grade Cold Worked Condition
CP350 CP500
a a
f f f f
y u y u
2 2 2 2
N/mm N/mm N/mm N/mm
1.4301 350 600 460 650
1.4318 b b 460 650
1.4541 350 600 460 650
1.4401 350 600 460 650
1.4571 350 600 460 650
a
According to EN 10088, the CP classification defines only the required 0,2 % proof strength, f . The steels used should have
y
declared properties that meet the conservative tabulated values for tensile strength, f , unless type testing is used to demonstrate the
u
acceptability of lower values.
b
Grade 1.4318 develops a 0,2 % proof strength of 350 N/mm in the annealed condition; see Table 2.1.
”.
5 Modification to 2.1.4, Fracture toughness
nd
In Paragraph (1), in the 2 NOTE, replace "Annex A.5.3" with "A.5".
6 Modification to 2.3, Welding consumables
Renumber Paragraph (2) as (3) and add a new Paragraph (2):
“(2) As an exception to 2.3(1), for austenitic stainless steel in the cold worked condition, the filler metal may have lower
nominal strength than for the base material, see 6.3. In general, austenitic filler metals should be used for welding
stainless steels in the cold worked condition. Austenitic-ferritic filler metals may also be used, provided the mechanical
properties of the joint are verified by tests in accordance with Clause 7.”.
Then delete the old Paragraph (3) but keep the NOTE and place it under the new Paragraph (3).
7 Modification to Clause 3, Durability
Delete Paragraphs (1) to (5) and add a new Paragraph (1):
“(1) Annex A gives a procedure for selecting an appropriate grade of stainless steel for the service environment in which
the structural members are to be used.”.
8 Modification to 5.1, General
Replace Paragraph (5) with:
“(5) Where members may be subjected to significant deformation, account may be taken of the potential for enhanced
strength gained through the cold worked properties of austenitic stainless steel. Where this cold working increases the
actions resisted by the members, the joints should be designed to be consistent with the increased member resistance,
especially where capacity design is required.”.
9 Modifications to 5.2.2, Classification of compression elements
In Table 5.2 (sheet 1 of 3), replace Rows 2, 4, 5 and 7 with the following ones:
“
…
Part subject to
Class Part subject to bending Part subject to bending and axial force
compression
…
396ε
whenα> 0,5 : c / t≤
13α−1
1 ct/ ≤ 72ε c / t≤ 33ε
36ε
whenα≤ 0,5 : c / t≤
α
420ε
whenα> 0,5 : c / t≤
13α−1
2 c / t≤ 76ε c / t≤ 35ε
38ε
α≤ 0,5 : / ≤
when c t
α
…
c / t≤ 18,5ε k
σ
3 c / t≤ 90ε c / t≤ 37ε
For k see EN 1993-1-5
σ
…
”.
In Table 5.2 (sheet 2 of 3), replace Rows 2, 4, 5 and 7 with the following ones:
“
…
Part subject to bending and axial force
Section Part subject to
Class
type compression
Tip in compression Tip in tension
…
Cold
9ε
formed 9ε
c / t≤
1 c / t≤ 9ε c / t≤
and
α α α
welded
Cold
10ε
formed 10ε
c / t≤
2 c / t≤ 10ε c / t≤
...