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EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM

EN 1993-1 -12

February 2007

ICS 91.010.30; 91.080.10

Incorporating corrigendum April 2009

English Version

Eurocode 3 – Design of steel structures – Part 1-12: Additional rules for the extension of EN 1993 up to steel grades S 700

Eurocode 3 – Calcul des structures en acier – Partie 1-12 : Règles additionnelles pour l’utilisation de l’EN 1993 jusqu’à la nuance d’acier S 700 Eurocode 3: Bemessung und Konstruktion von Stahlbauten -Teil 1-12: Zusätzliche Regeln zur Erweiterung von EN 1993 auf Stahlsorten bis S 700

This European Standard was approved by CEN on 6 July 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 CEN Management Centre 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 CEN Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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.

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© 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.

Ref. No. EN 1993-1 -12:2007: E

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Contents

Page
Forward 3
1 General 3
  1.1 Scope 3
  1.2 Normative references 4
  1.3 Symbols 4
2 Additional rules to EN 1993-1-1 to EN 1993-1-11 5
  2.1 Additional rules to EN 1993-1-1 5
  2.2 Additional rules to EN 1993-1-2 6
  2.3 Additional rules to EN 1993-1-3 6
  2.4 Additional rules to EN 1993-1-4 6
  2.5 Additional rules to EN 1993-1-5 7
  2.6 Additional rules to EN 1993-1-6 7
  2.7 Additional rules to EN 1993-1-7 7
  2.8 Additional rules to EN 1993-1-8 7
  2.9 Additional rules to EN 1993-1-9 8
  2.10 Additional rules to EN 1993-1-10 8
  2.11 Additional rules to F.N 1993-1-11 9
3 Additional rules to application parts EN 1993-2 to EN 1993-6 9
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Foreword

This European Standard EN 1993-1 -12, “Eurocode 3: Design of steel structures: Part 1-12: Additional rules for the extension of EN 1993 up to steel grades S 700”, 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 August 2007, and conflicting National Standards shall be withdrawn at latest by March 2010.

According to the CEN-CENELEC Internal Regulations, the National Standard Organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, 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 1993-1-12

This standard gives alternative procedures, values and recommendations with notes indicating where national choices may have to be made. Therefore the National Standard implementing EN 1993-1-12 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 1993-1-12 through:

1 General

1.1 Scope

  1. This EN 1993-1-12 gives rules that can be used in conjunction with parts

    to enable steel structures to be designed with steel of grades greater than S460 up to S700.

  2. Where it is necessary to alter a rule in other parts to enable up to S700 to be used, it is stated what needs to be done, either by noting that a rule is not to be used with steel grades greater than S460, then giving the one that is required, or by giving an additional rule or rules.

1.2 Normative references

  1. This European Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies.

    EN 499 Welding consumables – Covered electrodes for manual metal arc welding of non alloy and fine grain steels – Classification

    EN 10025-6 Hot rolled products of structural steels – Part 6: Technical delivery conditions for flat products of high yield strength structural steels in the quenched and tempered condition

    EN 10149-1 Hot-rolled flat products made of high yield strength steels for cold forming – Part 1: General delivery conditions

    EN 10149-2 Hot-rolled flat products made of high yield strength steels for cold forming – Part 2: Delivery conditions for thermomechanically rolled steels

    EN 12534 Welding consumables – Wire electrodes, wires, rods and deposits for gas shielded metal arc welding of high strength steels – Classification

    EN 12535 Welding consumables – Tubular cored electrodes for gas shielded metal arc welding of high strength steels – Classification

1.3 Symbols

  1. Symbols used in this standard are defined in the standards referred to.
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2 Additional rules to EN 1993-1-1 to EN 1993-1-11

2.1 Additional rules to EN 1993-1-1

3.1(2) Additional note:

NOTE The National Annex may specify steel grades greater than S460 up to S700 for general use or for use in specific applications. The grades in Tables 1 and 2 and the nominal values that may be used for their yield strengths and Image ultimate tensile strength Image are recommended for use, provided that the rules in this Part 1.12 are followed.

Table 1 — Nominal values of yield strength fy and ultimate tensile strength fu for hot rolled structural steel
EN10025-6
Steel grade and qualities		 Nominal thickness of the element t mm
t≤50 mm 50 mm<t≤100 mm 100 mm<t≤150 mm
fy[N/mm2] fu[N/mm2] fy[N/mm2] fu[N/mm2] fy[N/mm2] fu[N/mm2]
S 500Q/QL/QL1 500 590 480 590 440 540
S 550Q/QL/QL1 550 640 530 640 490 590
S 620Q/QL/QL1 620 700 580 700 560 650
S 690Q/QL/QL1 690 770 650 760 630 710
Table 2 — Nominal values of yield strength fy and ultimate tensile strength fu for hot rolled flat products.
EN 10149-2a) 1,5 mm ≤t≤ 8 mm 8 mm <t≤16 mm
  fy
[N/mm2]		 fu
[N/mm2]		 fy
[N/mm2]		 fu
[N/mm2]
S 500MC 500 550 500 550
S 550MC 550 600 550 600
S 600MC 600 650 600 650
S 650MC 650 700 630 700
S 700MC 700 750 680 750
a) Verification of the impact energy in accordance with EN 10149-1 Clause 11, Option 5 should be specified.

3.2.2(1) Additional note:

NOTE The limiting values of the ratio fu/fy, the elongation at failure and the ultimate strain εu for steels greater than S460 up to S700 may be defined in the National Annex. The following values are recommended:

3.2.2(2) Additional notes:

NOTE 1 Steels with grades greater than S460 up to S700 conforming to one of the steel grades listed in Tables 1 and 2 should be accepted as satisfying these requirements.

NOTE 2 The ability of a steel structure to absorb deformation is related to both the elongation and the toughness properties of its constituent steel products. The global performance required depends on the anticipated deformations. The local performance required depends on the details used. Due to higher stress levels, structures of steels according to Tables 1 and 2 require special care in both the control of deformations

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and in detailing to avoid notches and other stress concentrations. The global analysis should consider imposed deformations where relevant.

5.4.1(3) Additional rule:

Not applicable to steels with grades greater than S460 up to S700.

5.4.1 (4)B Additional rule:

Not applicable to steels with grades greater than S460 up to S700.

5.4.3(1) Additional rule:

For steels of grades greater than S460 up to S700, the global analysis using non-linear plastic analysis considering partial plastification of members in plastic zones only, applies.

NOTE: The National Annex may specify additional rules for steels according to Tables 1 and 2. Rules for design with FEM are given in Informative Annex C of EN 1993-1-5.

6.2.3(2) Additional rule:

For steels with grades greater than S460 up to S700 the design resistance of a net section should be taken as

Image

where γM12 is the partial factor for net section resistance for steels with grades greater than S460 up to S700.

NOTE: The National Annex may specify the value of γM12. The value γM12 = γM2 = 1,25 is recommended.

6.2.3(3) Additional rules:

Steels with grades greater than S460 up to S700 should not be used for applications where capacity design is required.

Table 6.2 Additional rule:

The rules for S 460 also apply for steels with grades greater than S460 up to S700.

2.2 Additional rules to EN 1993-1-2

The standard is applicable to steels with grades greater than S460 up to S700 without further additional mies.

2.3 Additional rules to EN 1993-1-3

The standard is applicable to steels with grades greater than S460 up to S700 without further additional rules.

2.4 Additional rules to EN 1993-1-4

EN 1993-1-4 is not applicable.

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2.5 Additional rules to EN 1993-1-5

The standard is applicable to steels with grades greater than S460 up to S700 without further additional rules.

2.6 Additional rules to EN 1993-1-6

Annex B is not applicable to steels with grades greater than S460 up to S700.

2.7 Additional rules to EN 1993-1-7

The standard is applicable to steels with grades greater than S460 up to S700 without further additional rules.

2.8 Additional rules to EN 1993-1-8

1.1(1) Additional rules:

EN 1993-1-8 may be applied also to steels with grades greater than S460 up to S700 if the following additional rules are applied.

3.6.1(1) For steels with grades greater than S460 up to S700 and bolts loaded in shear in oversize and slotted holes should only be used for category C connections.

3.10.3(2) Not applicable to steels with grades greater than S460 up to S700.

3.10.4 Not applicable to steels with grades greater than S460 up to S700.

3.12(2) This clause also applies to connections in steels with grades greater than S460 up to S700.

4.2(2) Additional rule:

For steels with grades greater than S460 up to S700 the filler metal may have lower strength than the base material.

NOTE The National Annex may give restrictions for the use of such undermatched electrodes.

4.5.3.2(6) Additional rule:

For under matched electrodes that are used for steels with grades greater than S460 up to S700 Image fu should be substituted with the ultimate strength of the filler metal feu according to Table 3 for electrodes according to EN 499, EN 12534 and EN 12535. βw Image should be taken as 1,0.

Table 3 — Ultimate strength feu of electrodes
Strength class 35 42 55 62 69
Ultimate strength feu N/mm2 440 500 640 700 770

4.7.1(1) Additional rule:

The resistance of welded connections with undermatched electrodes with steel grades greater than S460 up to S700 should be based on the strength of the filler metal.

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4.11

Additional rule:

For steel grades greater than S460 up to S700 longitudinal fillet welds in lap joints with steel grades greater than S460 up to S700 should not be longer than 50a unless the non-uniform stress distribution is taken into account in the design.

5.1.3 Not applicable to steels with grades greater than S460 up to S700.

5.1.4 Not applicable to steels with grades greater than S460 up to S700.

5.2.2.4 Not applicable to steels with grades greater than S460 up to S700.

6 Additional rules:

The rules for semi-rigid joints are not applicable for steels with grades greater than S460 up to S700. If non-linear plastic global analysis considering the partial plastification of members in plastic zones is used, connections between members Image should only be on the basis of full-strength joints. If elastic global analysis is used, connection with partial-strength joints may be used, provided that the resistance of joints exceeds the design values of the internal forces and moments Image in the connected elements. In both cases the resistance of joints should be determined based on elastic distribution of forces over the components of a joint.

6.2.6.9 to 6.2.6.12 Additional rules:

The rules for column bases may only be used for steel grades greater than S460 up to S700, provided that the bolt failure mode is decisive for verification of base plates in bending on the tension side of connections and an elastic distribution of forces in anchor bolts is used.

7.1.1(4) Additional rule:

For steels with grades greater than S460 up to S700 the reduction factor is 0,8.

2.9 Additional rules to EN 1993-1-9

8(1) Additional rule:

Image For hybrid girders made of steel with flange grades greater than S460 up to S700 the limitation Δσ≤ 1,5fyf should be applied, where fyf is the yield strength of the flange. Image

2.10 Additional rules to EN 1993-1-10

2.3.2(1) Additional rule:

Table 4 may also be used to determine the maximum permissible element thickness for steel grades greater than S460 up to S700.

NOTE 1 Linear interpolation can be used in applying Table 4. Most applications require σEd values between σEd = 0,75 fy(t) and σEd = 0,50 fy(t) . σEd = 0,25 fy(t) is given for interpolation purposes. Extrapolations beyond the extreme values are not valid.

NOTE 2 For ordering products made of steels according to Table 4 the TJ – values should be specified.

NOTE 3 Image Table 4 Image has been derived for the guaranteed Charpy energy values CVN in the direction of the rolling of the product.

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Table 4 — Maximum permissible values of element thickness t in mm
Steel grade Subgrade Charpy
energy
CVN		 Reference temperature TEd [°C]
10 0 -10 -20 -30 -40 -50 10 0 -10 -20 -30 -40 -50 10 0 -10 -20 -30 -40 -50
at T
[°C]		 Jmin σEd = 0,75 fy(t) σEd = 0,50 fy(t) σEd = 0,25 fy(t)
EN 10025-6        
S500 Q 0 40 55 45 35 30 20 15 15 85 70 60 50 40 35 25 145 125 105 90 80 65 55
Q -20 30 65 55 45 35 30 20 15 105 85 70 60 50 40 35 170 145 125 105 90 80 65
QL -20 40 80 65 55 45 35 30 20 125 105 85 70 60 50 40 195 170 145 125 105 90 80
QL -40 30 100 80 65 55 45 35 30 145 125 105 85 70 60 50 200 195 170 145 125 105 90
QL1 -40 40 120 100 80 65 55 45 35 170 145 125 105 85 70 60 200 200 195 170 145 125 105
QL1 -60 30 140 120 100 80 65 55 45 200 170 145 125 105 85 70 205 200 200 195 170 145 125
S550 0 0 40 50 40 30 25 20 15 10 80 65 55 45 35 30 25 140 120 100 85 75 60 50
Q -20 30 60 50 40 30 25 20 15 95 80 65 55 45 35 30 160 140 120 100 85 75 60
QL -20 40 75 60 50 40 30 25 20 115 95 80 65 55 45 35 185 160 140 120 100 85 75
QL -40 30 90 75 60 50 40 30 25 135 115 95 80 65 55 45 200 185 160 140 120 100 85
QL1 -40 40 110 90 75 60 50 40 30 160 135 115 95 80 65 55 200 200 185 160 140 120 100
QL1 -60 30 130 no 90 75 60 50 40 185 160 135 115 95 80 65 200 200 200 185 160 140 120
S620 Q 0 40 45 35 25 20 15 15 10 70 60 50 40 30 25 20 130 110 95 80 65 55 45
Q -20 30 55 45 35 25 20 15 15 85 70 60 50 40 30 25 150 130 110 95 80 65 55
QL -20 40 65 55 45 35 25 20 15 105 85 70 60 50 40 30 175 150 130 110 95 80 65
QL -40 30 80 65 55 45 35 25 20 125 105 85 70 60 50 40 200 175 150 130 110 95 80
QL1 -40 40 100 80 65 55 45 35 25 145 125 105 85 70 60 50 200 200 175 150 130 110 95
QL1 -60 30 120 100 80 65 55 45 35 170 145 125 105 85 70 60 200 200 200 175 150 130 110
S690 Q 0 40 40 30 25 20 15 10 10 65 55 45 35 30 20 20 120 100 85 75 60 50 45
Q -20 30 50 40 30 25 20 15 10 80 65 55 45 35 30 20 140 120 100 85 75 60 50
QL -20 40 60 50 40 30 25 20 15 95 80 65 55 45 35 30 165 140 120 100 85 75 60
QL -40 30 75 60 50 40 30 25 20 115 95 80 65 55 45 35 190 165 140 120 100 85 75
QL1 -40 40 90 75 60 50 40 30 25 135 115 95 80 65 55 45 200 190 165 140 120 100 85
QL1 -60 30 110 90 75 60 50 40 30 160 135 115 95 80 65 55 200 200 190 165 140 120 100
EN 10149-2        
S500 MC -20 40 80 65 55 45 35 30 20 125 105 85 70 60 50 40 195 170 145 125 105 90 80
S550 MC -20 40 75 60 50 40 30 25 20 115 95 80 65 55 45 35 185 160 140 120 100 85 75
S600 MC -20 40 70 55 45 35 30 20 15 105 90 75 60 50 40 35 180 155 130 110 95 80 70
S650 MC -20 40 65 50 40 30 25 20 15 100 85 70 55 45 35 30 170 145 125 105 90 75 65
S700 MC -20 40 60 45 35 30 25 20 15 95 80 65 50 45 35 30 165 140 120 100 85 70 60

2.11 Additional rules to EN 1993-1-11

The standard is applicable to steels with grades greater than S460 up to S700 without further additional rules.

3 Additional rules to application parts EN 1993-2 to EN 1993-6

  1. The design rules in the application parts EN 1993-2 to EN 1993-6 can also be applied to steels with grades greater than S460 up to S700.

    NOTE The National Annex to this Part may limit the range of applicable grades of steel for EN 1993-2 to EN1993-6.

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