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Rules for Classification and Construction

II Materials and Welding

1 Metallic Materials

6 Special Materials for Naval Ships

Edition 2003



The following Rules come into force on October 1st, 2003

Germanischer Lloyd Aktiengesellschaft

Head OfficeVorsetzen 35, 20459 Hamburg, Germany

Phone: +49 40 36149-0

Fax: +49 40 [email protected]

www.gl-group.com

"General Terms and Conditions" of the respective latest edition will be applicable

(see Rules for Classification and Construction, I - Ship Technology, Part 0 - Classification and Surveys).

Reproduction by printing or photostatic means is only permissible with the consent of

Germanischer Lloyd Aktiengesellschaft.

Published by: Germanischer Lloyd Aktiengesellschaft, HamburgPrinted by: Gebrüder Braasch GmbH, Hamburg



Table of Contents

Section 1 General

A. Scope ..................................................... ............................................................ ......................... 1- 1

B. Abbreviations ........................................................... ......................................................... ......... 1- 1

C. Principles and Test Procedures ....................................................................................... ........... 1- 1

Section 2 Steel Plates, Strips, Sections and Bars

A. Liquid Quenched and Tempered Structural Steels ......... ............................................................ 2- 1

B. Non-Magnetizable Steels ........................................................ ................................................... 2- 3

Section 3 Steel Pipes

A. Pipes of Liquid Quenched and Tempered Structural Steels ....................................................... 3- 1

B. Pipes of Non-Magnetizable Steels ............................................................................ ................. 3- 3

Section 4 Forgings

A. Forgings of Liquid Quenched and Tempered Structural Steels ................................................. 4- 1

B. Forgings of Non-Magnetizable Steels .......................................................... .............................. 4- 3

Section 5 Steel Castings

A. Liquid Quenched and Tempered Steel Castings ................................................ ....................... 5- 1

B. Non-Magnetizable Steel Castings ............................................................... ............................... 5- 3

Section 6 Forgings of Wrought Copper Alloys

A. Scope ..................................................... ............................................................ ......................... 6- 1

B. Suitable Wrought Copper Alloys ..................................................... .......................................... 6- 1

C. Requirements to be met by Manufacturers ................................................................................. 6- 1

D. Surface Finish ............................................................ ....................................................... ......... 6- 1

E. Dimensions; Dimensional and Geometrical Tolerances ............................................................ 6- 1

F. Requirements Applicable to the Material ............................................................ ....................... 6- 1

G. Testing ........................................................... ............................................................ ................. 6- 4

H. Retesting ......................................................... ........................................................... ................ 6- 4

I. Marking ............................................................ .......................................................... ................ 6- 4

J. Certificates .......................................................... .............................................................. ......... 6- 5

Section 7 Titanium and Titanium Alloys

A. Wrought Titanium Alloys .................................................... ...................................................... 7- 1

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Table of Contents Chapter 6



Section 8 Non-Magnetizable Anchor Chain Cables and Accessories

A. General ........................................................ ............................................................ .................... 8- 1

B. Chain Materials ........................................................... ........................................................... ..... 8- 1

C. Construction and Manufacture ............................................................ ........................................ 8- 2

D. Testing of Finished Chain Cables ....................................................... ........................................ 8- 2

E. Marking ....................................................... ........................................................... .................... 8- 3

F. Testing of Accessories ........................................................ ........................................................ 8- 3

Section 9 Non-Magnetizable Anchors

A. Scope .......................................................... ............................................................ .................... 9- 1

B. Design and Tests ................................................... .......................................................... ............ 9- 1

C. Materials for Anchors and Anchor Components ............................................... ......................... 9- 1

D. Testing ................................................................. .......................................................... ............. 9- 1

E. Marking ....................................................... ........................................................... .................... 9- 2

Chapter 6

Table of Contents II - Part 1

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Index

A

Abbreviations .............................................................. ......................................................... .................................. 1-1

Anchors ........................................... ............................................................ ............................................... ..... 8-1, 9-1

categories ........................................................................................................ ................................................. 9-1

chain cables and accessories .............................................................. ...................................................... ........ 8-1

lashings .................................................... ............................................................ ............................................. 8-1

Approval ................................................. ........................................................ ....................................................... 2-1

B

Boilers ..................................................... ............................................................ ................................................... 4-3Breaking load ................................. ............................................................ ................................................... ......... 8-2

Breaking loads of anchor chains ......................................................... .................................................... ............... 8-3

Breaking test of anchor chains ........................................................... .................................................... ................ 8-2

Bushes ..................................................... ........................................................ ....................................................... 6-3

C

Castings .................................................................................................... ...................................................... ....... 5-1

Certificate of the delivering works ..................................................................... .................................................... 7-3

Certificates ........................................................... ................................................................. ................................. 6-5

Chain accessories ................................ ................................................................. ................................................. . 8-1

Chain manufacturers ....................... ............................................................ ................................................... ........ 8-1

Chain materials ................................................................ ............................................................. ......................... 8-1

Characteristics of the anchors .............................................................. .......................................................... ........ 9-2

Chemical composition .......................................................... ........ 2-1, 2-4, 3-2, 3-3, 4-1, 4-4, 5-1, 5-4, 6-2, 6-4, 7-1

Cold-finished pipes ..................................................... .......................................................... .......................... 3-1, 3-2

Compression test .................................... ................................................................. .............................................. . 2-5

Connecting elements ...................................... ................................................................ ........................................ 6-1Connecting parts ........................................................ ........................................................... ................................. 8-1

Corrosion cracking ...................................................... .......................................................... ................................. 6-4

D

Design of anchors ........................................................ ......................................................... ................................. 9-1

Design temperature ....... ................................................................ ........................................................ ................. 4-3

Dimensional and geometrical tolerances ..................................................................... ........................... 2-1, 6-1, 7-1

Dimensional tolerances ..................................................... ............................................................ .................. 2-4, 8-2

Discs ................................................... ............................................................ ....................................................... 6-3

Drop forgings ................................................ .................................................... .............................................. 6-3, 7-1

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Index Chapter 6



E

Engineering parts ............................................................. .......................................................... ............................ 6-1

External and internal condition ............................................................ .................................................... ....... 5-2, 5-3

External and internal defects ............................................................ .......................................................... ........... 4-3

F

Flanges .................................................................................................................................................................. 4-3

Flash-butt welding ........................................ ........................................................... .............................................. 8-2

Flat products ........................................... ............................................................ ................................................... 2-3

Forerunners ............................................................................................................................................................ 8-1

Forgings ................................................................................................................................................................. 4-1

Forgings of liquid quenched and tempered structural steels .................................................... .............................. 4-1

Forgings of non-magnetizable steels .......................................................... ........................................................ ... 4-3

Forgings of wrought copper alloys ............................................. ........................................................ ................... 6-1

Freedom from defects ..... ............................................................ ........................................................ ................... 8-2

H

Heat treatment ............................................................. ...................................................... 2-1, 2-4, 3-1, 3-3, 5-1, 5-3

High-pressure fittings ........... ................................................................. .................................................... ............ 6-1

High-temperature steel pipes ................................................................ ...................................................... ........... 3-1

Hot-finished pipes ................................................... .......................................................... ............................. 3-1, 3-2

Hull components ................................................................................................. ............................................... .... 7-1

Hydraulic fittings ........................................................................ ....................................................... .................... 6-1

I

Intercrystalline corrosion .......................................................... .................................................... .... 2-4, 3-3, 4-4, 5-4

K

Kenter-type joining shackle ................................................................ ........................................................ ........... 8-1

L

Liquid quenched and tempered steel castings ..................................................... .................................................. 5-1

Liquid quenched and tempered structural steels ........................................................... ......................................... 2-1

M

Marking ........................................................ ........................................................... ... 2-3, 4-3, 6-4, 7-3, 8-1, 8-3, 9-2

Material conditions ......................................................... .......................................................... ...................... 6-1, 7-1

Materials for anchors and anchor components ...................................................... ................................................ 9-1

Mechanical properties ............................................................... ........... 2-1, 2-4, 3-2, 3-3, 4-1, 5-2, 6-2, 7-1, 8-2, 8-3

N Non-destructive testing ......................................................................... ...................................................... ........... 3-3

Non-magnetizable anchor chains ....................... ................................................................ .................................... 8-1

Chapter 6

Index II - Part 1

GL 2003



Non-magnetizable anchors ........................................................................ ..................................................... ........ 9-1

Non-magnetizable steel castings ....................................................... .............................................................. ....... 5-3

Non-magnetizable steels ............................................................ ............................................................ ................ 2-3

Notched-bar impact bending test ................................................ ....................................... 2-2, 2-5, 3-2, 4-2, 5-3, 5-4

Nozzles ................................................................................................................... ............................................... 4-3

O

Open-die forgings ...................................................... ........................................................... .......................... 6-3, 7-1

P

Permeability .............................................................. ................................................. 1-1, 2-5, 3-3, 3-4, 4-4, 5-5, 6-4

relative ........................................................ ............................................................ .......................................... 3-3

Pipelines .......................................................................................................................................................... 4-3, 7-1

Pipes of liquid quenched and tempered structural steels ..................................................... ................................... 3-1

Pipes of non-magnetizable steels ............................................................ ........................................................ ....... 3-3

Pipes tough at sub-zero temperatures ........................................................ ..................................................... ........ 3-1

Pressure hull plates ........................................................... .......................................................... .................... 2-1, 2-4

Pressure vessels .......................................................... .......................................................... ................................. 4-3

Proof load ............................................................................... ....................................................... ......................... 8-2

Proof load of anchor chains ..................................................... ...................................................... ........................ 8-2

R Retests ............................................................ ............................................................. ..................... 2-3, 6-4, 7-2, 8-3

Rings ........................................................ ....................................................... ....................................................... 6-3

S

Sampling ... ................................................................. .......................................................... ........................... 6-4, 7-2

Severity levels ............................................................... ...................................................... ............................ 5-2, 5-4

Shackles ............................................................ ........................................................... .......................................... 8-2

Shape tolerances of pipes .................................................................... ................................................... ................ 3-2

Ships’ hulls ......................................................... ......................................................... .......................................... 7-1

Socket welding ............................................................................... ....................................................... ................. 4-3

Special plates .............................................................. ........................................................ ............................ 2-1, 2-4

Steel

bars ....................................................... ............................................................ ............................................... . 2-1

plates ........................................................... ............................................................ ......................................... 2-1

strips ................................................... ............................................................ ................................................. . 2-1

Steel pipes ........................................ ................................................................. ..................................................... 3-1

Steelmaking process ........................................................... .......................................................... ......................... 2-1

Submarine test ........................................................ .............................................................. ................................. 1-1

Superstructures ..................................................................................................... ................................................ . 7-1

II - Part 1

GL 2003

Index Chapter 6



Surface crack test ................... ........................................................... ......................................................... ............ 8-2

Surface finish ........................................................ ...................................................... 2-5, 4-1, 4-3, 4-4, 5-2, 5-4, 6-1

Swivel shackle ........................................................ ........................................................... .................................... 8-1

Swivels .................................................................................................................................................................. 8-2

T

Tensile testing .................................................... .......................................... 2-2, 2-4, 3-2, 3-4, 4-1, 4-4, 5-3, 5-4, 6-4

Test loads for anchors .......................................................... ...................................................... ............................ 9-3

Test procedures ..................................................................................................... ................................................. 1-1

Testing .............................................. .................................................... 2-2, 2-4, 3-2, 4-1, 5-3, 5-4, 6-4, 7-2, 8-1, 9-1

Tightness test ....................................................... ............................................................. .............................. 3-3, 3-4

Titanium ................................................................................................................................................................ 7-1

alloys ................................................................................................................................................................ 7-1

Tolerances of pipes .......................................................... .......................................................... ............................ 3-1

U

Ultrasonic examination ................................................................ ..................................................... .............. 2-2, 4-4

V

Valve housings .......... ................................................................. ....................................................... .................... 4-3

W

Washers ................................................................................................................................................................. 6-3

Weldability ............................................................................................................................................................ 2-1

Welding neck components ......................................... ............................................................ ................................ 4-3

Works acceptance certificate ....................................................................... ....................................................... ... 8-1

Wrought copper alloys ....................................................... ....................................................... ............................ 6-1

Wrought titanium alloys ................................................... .......................................................... ........................... 7-1

Chapter 6

Index II - Part 1

GL 2003

special materials for naval ships

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