Disclaimer:

The information in this publication is provided "AS IS" without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability, fitness for a particular purpose, or

non-infringement, and GrafT ech International Holdings Inc. ("GrafT ech") assumes no liability arising out of the use of it. The data listed falls within the normal range of product properties but should not be used to establish specification limits or used alone as the basis of design.

GrafTech's liability to purchasers is expressly limited to the terms and conditions of sale. This publication could include technical inaccuracies or typographical errors.

Changes are periodically added lo the information contained herein. GrafT ech may make improvements

and/or changes in the product(s) and/or services described in this publication at any time. No portion of thismaterial may be reprinted in any form without the express

written permission of GrafT ech. UCAR is a registered trademark licensed for use to GrafTech International Holdings Inc.

©2016 GrafT ech International Holdings Inc.

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Maximizing steel productivity through technology and service leadership

•·Disclaimer:

The information in this publication is provided "AS IS" without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability, fitness for a particular purpose, or non-infringement, and GrafTech International Holdings Inc. ("GrafTech") assumes no liability arising out of the use of it. The data listed falls within the normal range of product properties but should not be used to establish specification limits or used alone as the basis of design. GrafTech's liability to purchasers is expressly limited to the terms and conditions of sale. This publication could include technical inaccuracies or typographical errors. Changes are periodically added lo the information contained herein. GrafTech may make improvements and/or changes in the product(s) and/or services described in this publication at any time. No portion of this material may be reprinted in any form without the express written permission of GrafTech. UCAR is a registered trademark licensed for use to GrafTech International Holdings Inc. ©2016 GrafTech International Holdings Inc.

For more information, visit www.graftech.com

or contact one of our locations listed below:

ASIA PACIFIC

Beijing, China – Sales OfficeShanghai GrafTech Trading Co., Ltd.Jinglun Hotel, Room 4067No.3 Jian Wai Da JieBeijing, 100020 CHINATel: 86.10.8599.9291

Shanghai, China – Sales OfficeShanghai GrafTech Trading Co., Ltd.Room 1217, No 289 Wujin RoadHongkou District, Shanghai, 200080, CHINATel: 86.21.6325.8018

Hong Kong, China – Sales OfficeGrafTech Hong Kong LimitedTien Chu Commercial Building 7/F173-174 Gloucester RoadWan Chai, Hong Kong, CHINATel: 852.2739.2820

EUROPE, MIDDLE EAST, AFRICA

Calais, France – Manufacturing FacilityGrafTech France S.N.C.Rue des GarennesF-62100 Calais FRANCETel: 33.3.21.19.1420

Moscow, Russia – Sales OfficeGrafTech RUS LLC35 Usacheva Str., 7th FloorMoscow, 119048 RUSSIATel: 7.495.937.9848.9849

Pamplona, Spain – Manufacturing Facility/Sales Office Graftech Iberica S.L.Carretera de Astrain S/NE-31171 OrorbiaNavarra, SPAINTel: 34.948.321.200

Bussigny, Switzerland – Sales OfficeGrafTech Switzerland S.A.Boulevard de l’Arc-en-Ciel 361030 Bussigny-près-LausanneSWITZERLANDTel: 41.21.821.31.11

Meyerton, South Africa – Sales Office/Warehouse GrafTech South Africa (Pty) Ltd.Unit B, 56 Loch StreetMeyerton, GautengSOUTH AFRICA 1961Tel: 27.16.362.1270

NORTH AMERICA

Brooklyn Heights, Ohio – HeadquartersGrafTech International Holdings Inc.982 Keynote CircleBrooklyn Heights, Ohio USA 44131Tel: 1.216.676.2555

St. Marys, Pennsylvania – Manufacturing FacilityGrafTech USA LLC800 Theresia St.St Marys, Pennsylvania USA 15857Tel: 1.814.834.2801

Port Lavaca, Texas (Seadrift Coke) – Manufacturing Facility Seadrift Coke L.P.8618 State Hwy. 185 NorthP.O. Box 192Port Lavaca, Texas USA 77979Tel: 1.361.552.8887

Monterrey, Mexico – Manufacturing Facility/Sales Office GrafTech Mexico S.A. de C.V.Carretera Miguel AlemánKm. 20 #600 Ote.Apodaca, Nuevo León MEXICO 66600Tel: 52.81.8.135.5600

SOUTH AFRICA

Salvador, Brazil – Graphite Electrode Machine Shop GrafTech Brasil Participações LtdaRodovia BA-522 / Km-7Candeias, Bahia BRAZIL 43813-300Tel: 55.71.2108.9601

São Paulo, Brazil – Sales OfficeGrafTech Brasil Participações LtdaRod. BA-522, KM-7, S/Nº – Distrito IndustrialCandeias – BA – BRAZIL 43813-300Tel: 55.11.99645.6952

GrafTech International Ltd. ("GrafTech") is the leader in the carbon

and graphite industry because we focus on maximizing our customer's

bottom line and providing unparalleled support for their business, while

developing cutting edge technology that sets the standard in the steel

industry. From the very beginning of the company in 1886 through

today, we have worked in close partnership with our steelmaking

customers by focusing on transforming their needs into products and

services. Our knowledge base in the steelmaking process is unequaled

in the graphite electrode industry and is the key to our unmatched

technical service.

Throughout the last century and into the 21st century, GrafTech's

aggressive and impressive research and development record has led to

revolutionary innovations in graphite technology which has increased

productivity for our customers. GrafTech is proud of our strong

commitment to our customers to provide the necessary competitive

advantage to maximize productivity. Technical and service leadership is

the foundation of our business.

Maximizing Steel Productivitv Through Technolouv

and Service leadership GrafTech's vision is to enable customer leadership, better and faster

than our competition, through the creation, innovation and

manufacture of graphite and carbon material science-based solutions.

We have over 125 years of experience in the research and development

of graphite and carbon-based solutions. Our business was founded in

1886 by the National Carbon Company. We are a leading manufacturer

of a broad range of high quality graphite electrodes, products essential

to the production of electric arc furnace ("EAF") steel and various

other ferrous and nonferrous metals.

GrafTech, through its Seadrif Coke LP. subsidiary, produces

petroleum needle coke, w 1ch is the key raw material in the

manufacture of graphite jectrodes, which are consumed in EAF steel

production.

In August 2015, G afTech became an indirect wholly owned subsidiary

of Brookfield set Management Inc., which is an experienced

operator of in ustrial, natural resource and other tangible asset

businesses. his transaction has provided us a stable equity partner with experie ce in cyclical capital intensive industries.

GratTech Global Qualitv

We consider sustained customer statisfaction the ultimate

measure of product and service performance. Therefore,

GrafTech's stringent quality system focuses on

customer's needs and satisfaction. It is powered by lean

and 6 sigma methodology to minimize product variation

and drive continuous performance improvement.

• Our Arc Furnace Technology engineers analyze

customer applications and requirements - current and

future - and feed them into our technology systems.

This enables us to optimize today's electrode

performance and model next generation technology.

• Technology uses material science to translate customer

applications and requirements into raw material,

processing and testing Best Practices. This key

Know-How ensures that all of our manufacturing

locations utilize the latest process technology.

• Manufacturing focuses on Best Practice procedures

and targets. Process and product variation is minimized

through extensive use of statistical process control.

• Customer Technical Service engineers provide

electrode use Best Practices to assure optimum

graphite electrode performance.

• GrafTech employs strategic management techniques to

achieve optimal manufacturing capability and global

quality. We utilize ISO 9000 standards and statistical

process control throughout all levels of the

organization to assure our success.

u

Graphite Electrode Properties Graphite Electrode Properties

Typical Range

250-400mm 450-600mm Testing Property Units

10"-16" 18"-24"

650-750mm

26"-30" Method

AGX™

AGX™

AGX™

(ASTM) AGR AGR

Bulk density g/cm 3 1. 55-1. 65 1. 66-1. 74 1. 56-1. 66 1. 66-1. 73 1. 68-1. 75 C-559

Specific resistance µom 6. 0-8. 0 4. 7-6.0 5.5-7.0 4. 3-5.4 4. 1-4. 8 C-611

MPa 6. 0-12.0 9. 0-13. 5 5. 0-12. 0 8.0-12.0 9.0-12.5 Flexural strength C-651

PSI 900-1800 1400-2000 800-1800 1200-1800 1400-1900

Coefficient of x10-

6/ ° C thermal expansion

0. 5-1. 5 0. 2-1.4 0. 2-1. 8 0. 15-0.6 0. 2-0. 5 PATE*

Connecting Pin Properties

Property Units Typical Range Testing Method

(ASTM)

Bulk density g/cm 3 1. 75-1.84 C-559

Specific resistance µom 3. 4-4. 5 C-611

MPa 14.0-20.0 Tensile strength

PSI 2100-2900 C-749

Coefficient of x10-

6/ ° C 0-0.3 PATE*

thermal expansion

* PATE is a GrafTech invention for accurately measuring the coefficient of thermal expansion.** Displayed properties values are typical ranges and not a guarantee for individual electrode properties.

MAIN PROPERTIES

Bulk Density

A measurement of weight per unit volume. A higher bulk density will generally be

reflected in improved mechanical properties.

Specific Resistance

The electrical resistance of a unit length of graphite. One of graphite's useful

properties is that electrical resistance does not increase strongly with tempera­

ture. Up to 1400°

C, the electrical resistance is lower than it was at room tempera­

ture.

Flexural Strength

The maximum stress which the material will withstand before rupture in bending (also

called Bending Strength or Modulus of Rupture). Higher flexural strength in elec­

trodes will generally result in lower electrode breakage frequency.

Note: As graphite is a brittle material, GrafTech uses the ASTM 4-point bending test,

which gives more reliable results but values about 25% lower than the 3 point method

used by some graphite suppliers.

Tensile Strength

A measurement of pure tensile force per unit area required to cause rupture by pulling

apart. Higher tensile strength in pins will generally result in lower pin breakage

frequency. Graphite's strength characteristics increase significantly with temperature.

Coefficient of Thermal Expansion (CTE)

A measurement of the increase in length per unit length per degree rise in

temperature. Lower CTE will give better resistance to thermal shock. Also, CTE

compatibility between the graphite electrode and the connecting pin is important

for satisfactory performance of the electrode joint.

Ash Content

UCAR® Graphite Electrodes typically have less than 0.1 % impurities,

and do not contain elements harmful to steelmaking.

- -,

' I I -

-' I T -

- --

' - -- -I I I I I I I I J

I- I I I -, -

-

I -

Graphite Electrode Selection The following operating considerations must be addressed before

selecting the electrode size and grade for a particular application.

• Production / • Charging Practice • Water Spray Rings

Productivity Goals • Power Level • Fume Control System

• Furnace Design • Current Level • Graphite Electrode

• Steel Type and Grade • Slag Practice Consumption Goal

• Charge Material • Burner/ Oxygen

Practice

GRAPHITE ELECTRODE SELECTION GUIDE {Metric2 GRAPHITE ELECTRODE SELECTION GUIDE En lish Select Electrode

Electrode Length Options Pin Options Select Electrode

Diameter Electrode Length Options Pin Options

Diameter

Typ ica l We ight IEC Typi ca l We ight IEC

Min Max Min Max of PRE-GET' " Diameter Length Threads Min Max Min Max of PRE-GET TM Diameter Length El ectrode Designation El ectrode Designation per

per inch mm mm mm mm mm mm k mm 25.4mm Inches Inches Inches Inches Inches Inches Pounds Inches

750 762 765 2700 2680 2900* 2250 406T4L 406.40 685 . 40 4 30 30. 00 30. 12 110 105. 51 114. 17* 4950 406T4L 16. 00 26. 98 4

406T4N 406. 40 603 . 60 4 406T4N 16. 00 23. 76 4

700 711 714 2700 2680 2900* 1940 374T4L 374. 65 558. 80 4 28 27. 99 28. 11 110 105.51 114. 17* 4268 374T4L 14. 75 22. 00 4

2400 2325 2525 1700 374T4N 374. 65 457. 20 4 96 91.54 99. 41 3740 374T4N 14. 75 18. 00 4

650 660 663 2700 2680 2900* 1650 355T4L 355. 60 558.80 4 26 25 . 98 26. 10 110 105.51 114. 17* 3630 355T4L 14. 00 22 . 00 4

2400 2325 2525 1450 355T4N 355. 60 457. 20 4 96 91 . 50 99 . 40 3190 355T4N 14. 00 18. 00 4

600 610 613 2700 2680 2900* 1410 317T4EL 317. 50 558.80 4 24 24. 02 24. 13 110 105.51 114. 17* 3102 317T4EL 12.50 22. 00 4

2400 2325 2525 1250 317T4L 317.50 457. 20 4 96 91 . 54 99 . 41 2750 317T4L 12. 50 18. 00 4

2100 2045 2225 1080 317T4N 317.50 355. 60 4 84 80.51 87.60 2376 317T4N 12. 50 14. 00 4

550 559 562 2700 2680 2900* 1180 298T4L 298. 45 457. 20 4 22 22 . 01 22. 13 110 105. 51 114. 17* 2596 298T4L 11. 75 18. 00 4

2400 2325 2525 1050 298T3L 298. 45 457. 20 3 96 91.54 99. 41 2310 298T3L 11 . 75 18.00 3

2100 2045 2225 910 298T4N 298. 45 355. 60 4 84 80. 51 87. 60 2002 298T4N 11 . 75 14. 00 4

500 508 511 2400 2325 2525 870 273T3L 273. 05 457. 20 3 20 20. 00 20. 12 96 91 . 54 99 . 41 1914 273T3L 10. 75 18. 00 3

2100 2045 2225 760 273T3N 273 . 05 355. 60 3 84 80. 51 87. 60 1672 273T3N 10. 75 14. 00 3

1800 1745 1905 690 269T4L 269 . 88 457. 20 4 72 68. 70 75. 00 1518 269T4L 10. 63 18.00 4

269T4N 269. 88 355. 60 4 269T4N 10.63 14. 00 4

450 457 460 2400 2325 2525 700 273T3L 273. 05 457. 20 3 18 17. 99 18. 11 96 91. 54 99.41 1540 273T3L 10. 75 18. 00 3

2100 2045 2225 620 269T4L 269.88 457. 20 4 84 80. 51 87. 60 1364 269T4L 10. 63 18. 00 4 1800 1745 1905 530 241T4L 241 . 30 355. 60 4 72 68. 70 75. 00 1166 241T4L 9. 50 14. 00 4

241T3L 241 . 30 355. 60 3 241T3L 9. 50 14. 00 3 241T3N 241.30 338. 70 3 241T3N 9.50 13.33 3

400 406 409 2400 2325 2525 550 241T3L 241 . 30 355. 60 3 16 15. 98 16. 10 96 91 . 54 99. 41 1210 241T3L 9. 50 14. 00 3 2100 2045 2225 480 241T3N 241 . 30 338. 70 3 84 80. 51 87. 60 1056 241T3N 9. 50 13. 33 3 1800 1745 1905 420 222T4L 222. 25 355. 60 4 72 68. 70 75. 00 924 222T4L 8. 75 14. 00 4

222T4N 222. 25 304. 80 4 222T4N 8. 75 12. 00 4 215T3N 215.90 304.80 3 215T3N 8.50 12.00 3

350 352 358 2100 2045 2225 370 215T3N 215. 90 304. 80 3 14 13. 86 14. 09 84 80. 51 87. 60 814 215T3N 8. 50 12. 00 3 1800 1745 1905 310 203T4L 203. 20 304. 80 4 72 68. 70 75. 00 682 203T4L 8. 00 12. 00 4

203T4N 203. 20 254. 00 4 203T4N 8. 00 10. 00 4 177T3N 177. 16 270.90 3 177T3N 6. 97 10. 67 3

300 303 307 1800 1745 1905 230 177T4N 177. 80 215. 90 4 12 11 . 93 12. 09 72 68. 70 75. 00 506 177T4N 7. 00 8. 50 4 177T3N 177. 16 270. 90 3 177T3N 6. 97 10. 67 3 155T3N 155. 57 220.00 3 155T3N 6. 12 8. 66 3

250 251 256 1800 1905 160 155T3N 155. 57 220. 00 3 10 9. 88 10. 08 72 68. 70 75. 00 352 155T3N 6. 12 8. 66 3 1500 140 152T4N 152.40 190.50 4 60 58. 66 64. 96 308 152T4N 6. 00 7. 50 4

* Longer maximum length avai I able to many 110 inch customers

Graphite Electrode Selection GradeAGX™:

Your GrafTech Technical

Service Engineer can help

you decide which type of

product best suits your

existing or future needs.

The standard grades can

be refined to meet your

special needs.

A premium grade recommended for high power,

ultra-high power and DC furnaces operating under

severe electrical, mechanical and/ o r thermal

conditions. AGX ™ can also be used for ladle furnace

applications.

GradeAGR: A standard grade for applications where operating

conditions are not severe .

Current Carrying Ranges for Ladle Furnace Applications 70

60

50

~ 40 i::: Q)

~ 30 u

20

10

0

mm inches

250 10

300 12

350 14

400 16

Electrode Diameter

450 18

500 20

These are typical current carrying

capacities as observed in present

use of GrafTech electrodes around

the world. More severe operating

capacities and unusual applications

may differ and require investigation

by your GrafTech Technical Service

Engineer to define a product to

meet your requirements.

Current Carrying Ranges for Electric Arc Furnace

160 - - - - - - - - - - - - ; _ - - - - - - - - -; - - - - -(- - - - - -(- - - - - - - - - - -(- - - - - - - - - - -:- - - - -. .

140 - - - - - - - - - - - - : - - - - - - - - - - ~ - - - - -:- - - - - ~ - - -- - - - - - - -;- - - - - - - - - - -:- - - - -. . 120 - - - - - - - - Typical Current

Carrying Ranges

100 - - - - - - - - - - - - '. - - - - - - - - - - ; - - - - -;_ - - - - ~ - - - - - - - - - - -(- - - -

80 - - - - - - - -- - __ '._ -------- -i--- --(------:-- ----

60 - - - - - - - - - - - - ~ - - - - - - - - - - : - - - - _:_

40 - - - - - - - - - - - - ~ - - - - - - - -

20 - - - - -

inches 8 mm 200

12 300

16 400

20 500

Electrode Diameter

24 600

28 30 700 750