Workshop on Hazardous Substances Affecting Metallic-Coated Steel and Other MetalsMay 23, 2007

2page

Henkel – RoHS CompliantPassivate Discussion

Agenda:

• Position on RoHS• Products Discussion

• Offerings• Corrosion performance• Field experience

• References

3page

Henkel Position on RoHS

Electrical and electronic equipment (not all end users)• Appliances• Computers• Televisions, video recorders

Hexavalent Chromium (CrVI) is critical element for metal passivation treatments listed in RoHS regulation

• Must contain less than (0.1%) 1000 ppm. Hexavalent chromium or contain no intentionally added hexavalent chromium in any homogeneous layer

• Henkel position is that passivate coatings do not become a homogeneous layer with substrate, but, the discontinuous layer of the passivate. (IBM agrees with this position).

Chromium free products are compliant simply because there is no chrome present

Chromium III (trivalent) products are compliant in both the product and as-dried surface since Cr(VI) is below 1000 ppm and no Cr(VI) is intentionally added.

Conversion of Cr(III) → Cr(VI) will not happen under “normal” circumstances• PH≥14 or extreme oxidation are required• Practical basis, Cr(VI) not present during life-cycle of the coated materials.

4page

Hexavalent Chrome-Free Passivation Offerings

Three approaches:

• Non-chrome containing inorganic passivate

• Trivalent chrome inorganic passivate

• Thin organic coating non-chrome containing (acrylic coatings)

5page

Hexavalent Chromium Containing Inorganic Passivates: “Chemtreats”

Typical coating weight: 1.0 – 2.0 mg/sq.ft. Cr

Applied by flood squeegee and dried by hot air dryer

Corrosion performance by neutral salt spray (NSS): 96+ Hrs.

“Wet” corrosion tests: 800+ Hrs.

Low cost, good corrosion prevention

“Non-Paintable”

6page

Henkel Passerite 5004 WChromium-Free Inorganic Passivate

Major Coating Constituents

Molybdenum Titanium Phosphate Fluoride Organic Polymer

7page

ApplicationBath Concentration 20%-100% (Dependent On Coater)

30% is Typical

Run as Flood or Dip/Squeegee or Chemcoater

Bath pH: 2.5-3.5

Coating Wts.: 30-80 mg./sq.ft. (50 mg. is recommended)

Bath Temperature: <40C (104°F)

Strip PMT: 50-60C min., 120C max. (Above 120°F)

Drying Time: < 10 seconds recommended

P-5004 WChrome-Free Inorganic Passivate

8page

Passerite 6001 / Passerite 6003 / Bonderite 6020Trivalent Chromium Passivate Application Parameters

Application: Spray / squeegee (low bath volume) Chemcoater

Contact time: < 10 seconds

Bath Temp: < 110°F

Coating Weight: 30 – 40 mg./sq.ft. (20 – 30 mg./sq.ft. for B6020)

Cr Coating Weight: 3.0 – 4.0 mg./sq.ft. (2.0 – 3.0 for B6020)

Bath pH: < 2.5

Zn Dissolution: < 1.8% by weight

Bath Concentration: 10 – 60% dependent on flow to line,

20 – 30% is typical

Strip PMT: 110°F → 200°F

9page

Recommendations for Designing a System for Hex-Chrome Free Passivates

Solution contact time (time between application / drying ) – as

short as possible. Less than 5 seconds excellent.

Chemcoater best method (spray / squeegee is acceptable)

Drying peak metal temp (PMT) - 120°F minimum (220°F max)

Equipment materials (contacts solution) – 316 or 304 stainless

steel, or polymer (PVC, PEHD or PP) – no carbon steel

Wringer rolls – Hypalon, Viton or polyurethane covering – 45 –

55 shore hardness

Solution volume – as small as possible – less than 30 gallons –

(Henkel “Coiltech” system)

• Maintain pH below 2.5 – minimize zinc contamination

X-Ray fluorescence (Portaspec) recommended for coating

weights

10page

Henkel Standard Accelerated Corrosion Tests for Passivation Treatments

Neutral Salt Spray (NSS)

Wet Stack

Cleveland Condensing (CCH)

Butler Water Immersion (BWI)

11page

Corrosion Overview – Field Performance

Customer Prouduct Used

NSS Results

Wet Stack BWICleveland

Condensing24 48 72 96

A P6001 5 10 20 35+ 800 hrs. 800 hrs.+ 1000 hrs. +

B P6003 5 10 15 35+ 800 hrs. 800 hrs.+ 1000 hrs. +

C P6003 5 10 20 40+ 800 hrs. 800 hrs.+ 1000 hrs. +

D B6020 1 5 15 30+ 800 hrs. 700 hrs.+ 1000 hrs. +

E B6020 0 1 5 10+ 800 hrs. 700 hrs.+ 1000 hrs. +

F B6020 1 5 10 20+ 800 hrs. 700 hrs.+ 1000 hrs. +

G P5004W 5 10 20 25+ 800 hrs. 700 hrs.+ 1000 hrs.+

H P225W 0 0 1 5+ 800 hrs. 700 hrs. 1000 hrs.

→ Wet Stack, BWI and Cleveland Condensing results are to 5% white rust

Coating Wts. (Chrome mg/sq.ft)

A - 4.0 - 6.0

B - 4.0 - 6.0

C - 5.0 - 7.0

D - 3.0 - 4.0

E - 3.0 - 4.0

F - 1.0 - 2.5

G – 40 – 60 mg./sq.ft. (total)

H – 1.0 – 2.0 mg./ft2 chrome VI

12page

Trivalent Based Passivation – Product Evolution Commentary

“Passerite 6001 → Passerite 6003 → Bonderite 6020”

Continuous improvement in all of the following:• Corrosion performance (NSS)• Lower coating weight (lower applied costs)• Improved “paintability”• Improved conductivity (IBM and HP)• Less corrosive to equipment (304 and 316SS)• Bonderite 6020 – removal of organics – no foaming

Products have become more operator and end-user friendly

Next generation product – Bonderite 6010 – “fluoride free” – being tested in Europe

13page

• Primarily Used For Galvalume and HDG Coated Steel

• Expected Performance: Roll forms without oil

Good fingerprint resistance

Excellent corrosion performance

180° – 220° F PMT

Thin Organic Non-Chrome Coating:(Replacement For Hexavalent Cr Containing Acrylics)Granocoat 342

14page

Non-Chrome Thin Organic Coating: Granocoat 342

Galvalume HDG

Corrosion Data In Hours To Failure Stack BWI NSS Cleveland Stack BWI NSS Cleveland Cr+6 2016 1008 760 672 1008 1008 760 672 (Present Day) Granocoat 342 1008 1008 760 672 1008 1008 336 672

Specifications:

15page

Coating Weight: 75-200 mg./sq.ft. PMT: 170° - 250° F Application Method: Chemcoater Concentration: Used Neat Application Temperature: Ambient Recoil Temperature: <160°F

Non-Cr Thin Organic Passivate: Application Parameters:

16page

Granocoat 342 (Non-Chrome Acrylic)

Summary:

Corrosion performance slightly inferior in NSS (HDG) and wet stack (Galvalume)

Roll-forming excellent and verified at 9-stage roll former (correlates well with Butler Building roll former)

“Paintable” surface

In use at Precoat – Portage and CFM for small applications

Successful trials at Mittal – Sparrows Point (Galvalume) and Nucor – Berkeley (HDG)

page

INORGANIC PASSIVATION HEX-CHROME FREE

REFERENCES LIST

CUSTOMERS

18page

CUSTOMER PRODUCT APPLICATION SUBSTRATE CONTACT

TKS EBA1

GERMANY

PASSERITE 6003(20% vol)

Spray + Squeegee

EG Dieter Schrocer

+492035223865

VOEST

(4 lines) Austria

PASSERITE 5004

Spray + Squeegee

Rollcoater

HDG Franz Androsch

+4373265856852

TKS FBA7

Germany

PASSERITE 6003(40% Vol)

Spray + Squeegee

HDG Kurt Motte

+492349193492

TKS FBA4

Germany

PASSERITE 6003(30% vol)

Spray + Squeegee

HDG Udo Schulokt

+492035227700

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CUSTOMER PRODUCT APPLICATION SUBSTRATE CONTACT

ACCIAIERIA CREMONA (IT)

PASSERITE 6001 (40 to 45%vol)

Spray + Squeegee

HDG Carlo Lanzini

+3903724782

WUPPERMANN

(Holland)

PASSERITE 5004(40 to 45% vol)

Spray + Squeegee

HDG Hans G. Klockner

+31168357150

CORUS

Holland

PASSERITE5004(80 to 90% w/w)

Chem Coater HDG Thijs Post

+31622605651

20page

CUSTOMER PRODUCT APPLICATION SUBSTRATE CONTACT

ARCELOR AVILES

(Spain)

PASSERITE 6001

(40% vol)

Coil tech HDG Jose Manuel Puente

+34985126137

WHEELING NISSHIN (US)

PASSERITE 6001 (100%)

Spray + Squeegee + Roll coater

HDG

GALVANNEAL

USS POSCO

(US)

BONDERITE 6020 (20%)

Spray + Squeegee

HDG

WUPPERMANN

(2 lines)

(Austria)

PASSERITE 5004

Spray + Squeegee

Vacuumat

HDG Hans Georg Klockner +31168357150

MITTAL

SPARROWS PT.

MD

PASSERITE 6001

Spray + Squeegee

HDG Rob Weber

21page

CUSTOMER PRODUCT APPLICATION SUBSTRATE CONTACT

SSAB BORLANGE (SU)

Passerite 6003

(25 to 30% Vol)

COIL TECH HDG Mat Eliason

+4624372902

MARCEGALIA

(Italy)

PASSERITE 6001(25to30% w)

Spray + Squeegee

HDG Mr IVALDI

+390544516611

GONVARRI

(Spain)

PASSERITE 6001(55 to 60%vol)

Roll coater + Spray + Squeegee

HDG Jacek Michalek

+34937734656

NLMK

(Russia)

PASSERITE 5004(40 to 45%v)

Spray + Squeegee

HDG

22page

CUSTOMER PRODUCT APPLICATION SUBSTRATE CONTACT

Mittal Galati

ROMANIA

P. 5004 Roll Coater HDG Mr Munteanu

+40 722 56 42 48

Arcelor(VZA1)

Eisenhuttenstadt

P. 6003

(33 to 36% v/v)

Spray + Squeegee

HDG

RUUKI

Finland (1)

P. 6003 COIL TECH HDG Mr Paavilainen

+358205925554

RUUKI Finland (3) P. 6003 Chemcoater HDG

23page

CUSTOMER PRODUCT APPLICATION SUBSTRATE CONTACT

JSW - Tarapur Passerite 6000 Spray + Squeegee

HDG Rajesh Singh

+919371750420

Ispat India Passerite 6001 Spray + Squeegee

HDG R.S.Jain

+919823320396

Lloyds Steel India

Passerite 6001 Spray + Squeegee

HDG P.K.Chatterjee

+919326036261

Tata Steel Passerite 6001 Spray + Squeegee

HDG S. Beborta

+919234511144

24page

CUSTOMER PRODUCT APPLICATION SUBSTRATE CONTACT

JINDAL (India) Passerite 6000 Spray + Squeegee

HDG

JINDAL (India) Passerite 6001 Spray + Squeegee

HDG

Bhusan Steel (India)

Passerite 6001 Spray + Squeegee

HDG

An Steel (China)

Passerite 6000 Roll Coater HDG

25page

CUSTOMER PRODUCT APPLICATION SUBSTRATE CONTACT

Benxi (China) P. 6003 Roll Coater HDG

Borcelik (Turkey)

P. 6003 Spray + Squeegee

HDG

26page

Thank you