sten a aluminium alloys 2008 english

7/27/2019 Sten a Aluminium Alloys 2008 English

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Aluminium alloys for foundriesand deoxidization for steel mills

Stena Aluminium

Stena Aluminium ABGotthards Gata 5Box 44SE-343 21 lmhult, SwedenTel. (+46) (0)10 445 95 00Fax (+46) (0)10 445 95 01

Stena Aluminium A/SMetalvej 10DK-6000 Kolding, DenmarkTel. (+45) 76 30 56 00Fax (+45) 76 30 56 01

[email protected]

When using alloys, many circumstances exist that are outside the control of Stena Aluminium, which is why we cannot assume responsibility fordefects that are deemed to have been caused by abnormal handling and use bey ond the recommendations described in the brochure.


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2

Stena Aluminium.

Stena Aluminium is the leading produc-er o recycled aluminium in the Nordicregion. Our miss Our mission is to pro-duce and market customized alumini-um alloys or oundries and deoxidiza-tion or steel mills. Our enterprise todayis conducted at two plants, lmhult inSweden and Kolding in Denmark. Thelicensed volumes or both plants com-bined comprise at present 90,000 tons

per year. Stena Aluminium has an an-nual turnover exceeding SEK 1.7 billionwith around 140 employees.

Stena Aluminium is a part o the Ste-na Metall Group, which has operationsin more than 250 locations and in 13countries. This means that we are ableto guarantee access to raw materialsand, no less importantly, dependabledeliveries, even or very large quantities.

We think and work with the future inmind.Our task is to help our customers besuccessul. We do it by orming long-term relationships built on exibility,the right quality, high delivery perorm-ance and availability in products andtechnical support.

In order to help our customers be suc-cessul, we work continually on fnding

new ways to improve. We are con-stantly developing the unique charac-teristics o our processes and products.

All o Stena Aluminiums operationsare certifed according to ISO 9001:2000and ISO 14001:2004. The systems arean active part o our daily work.


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3 4

Customized alloysentirely according to

customer needs.

In this brochure, we present the Europeanstandards or aluminium alloys or oundrypurposes. At Stena Aluminium, nearly allalloys are produced in order to ulfl cus-tomer-specifc requirements.

Our customers mainly come romthe automotive, electronics, machineshop and urniture industries. Atpresent, we have over 450 dierentTypes o customer-adapted aluminium

alloys with varying requirements orelectrical conductivity, thermal con-ductivity, corrosion , resistance, strength,fnishing quality, exural strength, ten-sile yield limit, cutting property, weld-ability, etc.Consistently high qualityMaintaining consistently high qualityand delivering within tolerance limitshas become our speciality. Through

the use o large smelters in our smelt-ing process, we are also able to guar-antee consistency and high quality orlarge-volume deliveries. Our largeurnaces take up to 30 tons and guar-antee consistent analysis, even inlarge quantities. However, our com-prehensive quality controls during theprocess, rom the receiving o the rawmaterials to fnal inspection upon de-

livery, are an even more importantguarantee.

Our customers must always eelconfdent that we are delivering thehighest possible quality, so they in turncan deliver the same high quality totheir customers.

Ingots or liquidWe were the frst in the Nordic regionto deliver liquid aluminium to indus-

trial customers, in large thermosesthat contain up to eight tons per con-tainer. The smelted aluminium is trans-ported in liquid orm and is able to beused in the customers productionprocess immediately on arrival. Thealuminium will have a temperaturethat has been adjusted to the needs othe customers own process.

We will o course also continue to

cast aluminium ingots in the uture.


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Aluminium alloys orpressure die casting.Here, we present the European standards or pressure die casting. We show the chemicalrequirements or composition, casting properties, heat treatment and mechanical proper-ties. We also give a description o the general properties as well as the existing conceivableareas o application. These are ound o course in our product line, however, i required, wecan help you to select the right alloy or your exact requirements.

SS-EN 1780-I

numerical

SS-EN 1780-2

chemical

Older standard Si Fe Cu Mn Mg Cr Ni Zn Pb Sn Ti Other 2)

each

total

Alumi-

nium

Solidication

range

C0

approx.

Casting

tempera-

ture

C0

about

F lu id it y H ot t ea ri ng

Resistance

Shrinkage

about %

Pressure

tightness

EN AB-43400 EN AB-AISiI0Mg (Fe) - 9.0-11.0 0.45-0.9

(1.0)

0.08

(0.10)

0 .55 0 .2 5- 0.5 0

(0.20-0.50)

- 0.15 0.15 0.15 0.05 0.15

(0.20)

0.05 0.15 Rest 600-550 650-700 Excellent Excellent 0.5-0.8 Good Normally not age-hardened.

EN AB-44300 EN AB-AISiI2 (Fe) Type 4263 10.5-13.5 0.45-0.9

(1.0)

0.08

(0.10)

0.55 - - - 0.15 - - 0.15 0.05 0.25 Rest 580-570 650-700 Excellent Excellent 0.5-0.8 Good Not age-hardened

EN AB-444001) EN AB-AISi91) Type 4255 8.0-11.0 0.55

(0.65)

0.08

(0.10)

0.50 0.10 - 0.05 0.15 0.05 0.05 0.15 0.05 0.15 Rest 600-550 650-700 Excellent Excellent 0.5-0.8 Good Not age-hardened

EN AB-46000 EN AB-AISi9Cu3 (Fe Type 4250 8.0-11.0 0.6-1.1

(1.3)

2 .0- 4. 0 0 .55 0 .1 5- 0. 55

(0.05-0.55)

0.15 0.55 1.2 0.35 0.25 0.20

(0.25)

0.05 0.25 Rest 600-490 650-700 Good Good 0.5-0.8 Good Normally not age-hardened.

EN AB-46100 EN AB-AISil ICu2 (Fe) - 10.0-12.0 0.45-1.0

(1.1)

1.5-2.5 0.55 0.30 0.15 0.45 1.7 0.25 0.25 0.20

(0.25)

0.05 0.25 Rest 580-530 650-700 Excellent Good 0.5-0.8 Good Normally not age-hardened.

EN AB-46500 E N AB- AISi9Cu3(Fe)(Zn) Ty pe 4252 8.0-11.0 0.6- 1.2

(1.3)

2 .0- 4. 0 0 .55 0 .1 5- 0. 55

(0.05-0.55)

0.15 0.55 3.0 0.35 0.25 0.20

(0.25)

0.05 0.25 Rest 600/490 650-700 Good Good 0.5-0.8 Good Normally not age-hardened.

EN AB 47100 EN AB-AISiI2CuI(Fe) - 10.5-13.5 0.6-1.1

(1.3)

0.7-1.2 0.55 0.35 0.10 0.30 0.55 0.20 0.10 0.15

(0.20)

0.05 0.25 Rest 580-530 650-700 Excellent Excellent 0.5-0.8 Excellent Normally not age-hardened.

Alloys for pressure die casting Chemical composition for cast alloys according to SS_EN 66 (in % weight) Casting properties Heat treatment

SS = Swedish standardEN = European standardAB = Aluminium ingots

Note: The value in parentheses is the die casting composition where it diers rom ingots.

1) = Standardized or pressure die casting but normally used or sand and chill casting.2) Other does not involve material or grain refnement or processing o smelt suchas Na, Sr, Sb and P.

Alloy designation according to:

SS-EN 1780-I SS-EN 1780-2

numerical chemical

Older

standard

State1) Tensile

strength

Rm MPa2)

min.

Proo stress

Rp0.2 MPa2)

min.

Elongation

A50 %

min.

Brinell

hardness

HBS min.

Density

approx.

value

kg/dm 3)

Strength Machina-

bility

Welda-

bility 3)Resistance

to cor-

rosion

Decorative

anodizing

Polishabi-

lity

Linear thermal

expansion

293-3730K0K-

1

Electrical

conducti-

vity

MS/m

Thermal

conducti-

vity

W/m0K

EN AB-43400 AN AB-AISiI0Mg (Fe) - DF 240 140 1 70 Near-eutectic alloy with excellent castability propertiesand good resistance to hot tearing. Good machinabilityand high resistance to chemical attack.

For complicated, thin-wall, pressure-tight castings sub-jected to atigue loading. Good resistance to corrosionand high strength.

2.65 Good Good Poor Satisac-

tory

Not recom. Poor 21x10-6

16-21 130-150

E N A B- 44 30 0 E N A B- AI Si I2 ( Fe ) Ty pe

4263

DF 240 130 1 60 Eutectic alloy with excellent castability properties, excel-lent fuidity and high resistance to hot tearing. Goodmachinability and high resistance to chemical attack.

For complicated, thin-walled, pressure-tight and cor-rosion-resistant castings subjected to atigue loading.Particularly suitable or dicult thin-wall castings withgood elongation properties.

2.65 Good Satisac-

tory

P oor S at is a c-

tory


16-22 130-160

EN AB-444001)

EN AB-AISi91)

Type4255

DF 220 120 2 55 Near-eutectic alloy with excellent castability propertiesbut likely to adhere to the tool. Good resistance to hottearing and high resistance to chemical attack.

For castings that require good toughness and resistanceto corrosion. 2.65 Satisac-torySatisac-tory

P oor S at is a c-tory


16-22 130-150

E N A B- 46 00 0 E N A B- AI Si 9C u3 ( Fe ) T yp e

4250

DF 240 140


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Aluminium alloys or sandand chill casting.Here, we present the European standards or sand and chill casting. We show the chemicalrequirements or composition, casting properties, heat treatment and mechanical proper-ties. We also give a description o the general properties as well as the existing conceivableareas o application. These are ound o course in our product line, however i required, wecan help you to select the right alloy or your exact requirements.


SS-EN 1780-I SS-EN 1780-2

numerical chemical

Older

standard

Si Fe Cu Mn Mg Cr Ni Zn Pb Sn Ti Other1)

Each Total

Alumi-

nium

Solidifca-

tion range

Co

about

Co

a bo ut F lui di ty Ho t tea ri ng

Resistance

Co

ca

Shrinkage

about %

Pressure

tightness

EN AB-42000 EN AB-A1Si7Mg Type 4244 6.5-7.5 0.45

(0.55)

0.15

(0.20)

0.35 0.25-0.65

(0.20-0.65)

- 0.15 0.15 0.15 0.05 0.05-0.20

(0.05-

0.25)

0.05 0.15 Rest 620-570 700-750 Good Excellent S:1-1.2

K:0.8-1

Good Solution annealing at 520-530o

C or 3-6 hours, ater which

it is quenched in water and artifcially aged at 150-175o

C

or 15-5 hours

EN AB -4 300 0 EN AB -A 1S i 1 0Mg (a ) Ty pe 4 253 9 .0- 11 .0 0 .4 0

(0.55)

0.03

(0.05)

0.45 0.25-0.45

(0.20-0.45)

- 0.05 0.10 0.05 0.05 0.15 0.05 0.15 Rest 600-550 680-750 Excellent Excellent

K:0.8-1

S :1 -1 .2 G oo d S ol ut io n a nn ea li ng a t 5 20 -5 30o



C

or 15-5 hours

EN AB -4 31 00 EN AB -A 1S i 1 0Mg (b ) Ty pe 4 253 9 .0- 11 .0 0 .4 5

(0.55)

0.08

(0.10)

0.45 0.25-0.45

(0.20-0.45)

- 0.05 0.10 0.05 0.05 0.15 0.05 0.15 Rest 600-550 680-750 Excellent Excellent S:1-1.2

K:0.8-1




C

or 15-5 hours

EN AB -4 32 00 EN AB -A 1S i 1 0Mg (C u) Ty pe 42 53 9 .0- 11 .0 0 .5 5

(0.65)

0.30

(0.35)

0.55 0.25-0.45

(0.20-0.45)

- 0.15 0.35 0.10 - 0.15

(0.20)

0.05 0.15 Rest 600-530 680-750 Excellent Excellent S:1-1.2

K:0.8-1




C

or 15-5 hours

EN AB-44100 EN AB-A1Si 12(b) Type 4261 10.5-13.5 0.55

(0.65)

0.10

(0.15)

0.55 0.10 - 0.10 0.15 0.10 - 0.15

(0.20)


K:0.8-1

Excellent Not age-hardened. Annealed at 520-530o

C hours, ater

which it is quenched in water.

EN AB-44200 EN AB-A1Si 12(a) Type 4261 10.5-13.5 0.40

(0.55)

0.03

(0.05)

0.35 - - - 0.10 - - 0.15 0.05 0.15 Rest 580-570 680-750 Excellent Excellent S:1-1.1

K:0.8-1

Excellent Not age-hardened. Annealed at 520-530o

C or 3-5 hours,

ater which it is quenched in water.

EN AB-46200 EN AB-A1Si 8Cu3 Type 4251 7.5-9.5 0.7

(0.8)

2 .0 -3.5 0 .15- 0. 65 0 .15- 0. 55

(0.05-0.55)

- 0.35 1.2 0.25 0.15 0.20

(0.25)

0.05 0.25 Rest 600-490 680-750 Good Good S:1-1.1

K:0.9-1

Good N or ma ll y n ot a g e- ha rd en ed .

EN AB-46400 EN AB-A1Si 9Cu1 Mg - 8.3-9.7 0.7

(0.8)

0 .8 -1 .3 0 .15- 0. 55 0 .30- 0. 65

(0.25-0.65)

- 0.20 0.8 0.10 0.10 0.10-0.18

(0.10-0.20)

0.05 0.25 Rest 600-550 680-750 Good Good S:1-1.1

K:0.8-1




C

or 15-5 hours.

EN-AB 47000 EN AB-A1Si 12(Cu) Type 4260 10.5-13.5 0.7

(0.8)

0.9

(1.0)

0.05-

0.55

0.35 0.10 0.30 0.55 0.20 0.10 0.15

(0.20)


K:0.8-1

Excellent Not age-hardened.

Alloys or sand and chill casting Chemical composition or cast alloys according to SS-EN 1676 (in % weight) Gjutegenskaper Heat treatment

SS = Swedish standard

EN = European standardAB = Aluminium ingots

Note: The value in parentheses is the die casting compo-

sition where it diers rom ingots.

1)Other does not involve material or grain

refnement or processing o smelt such asNa, Sr, Sb and P.

2)S = Sand casting

K = Chill casting

3)Shorter time and/or higher temperature

or chill casting. Longer time and/or lowertemperature or sand casting. The time is frst computed only

when the temperature is attained.


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0

42000 AISi7MgFe LM25 356.0 AC4C 4244 A-S7G 3599

43000 AISi10Mg(a) 239 4253

43100 AISi10Mg(b) 239 4253 A-S10G 3051

43200 AISi12Mg(Cu) AC4A 233 4253

44100 AISi12(b) LM6 B413.0 AC3A 230 4261 A-S13 4514

44200 AISi12(a) 230 4261

46200 AISi8Cu3 LM27 B380.1 AC4B 226 4251 A-S7U3G 3601

46400 AISi9Cu1Mg 7369

47000 AISi12 (Cu) 231 4260 A-S12U 3048

Europe

EN 1706

ISO

UK

BS

US

AA

Japan

JIS

Germany

DIN

Sweden

SIS

France

NF

Italy

UNI

Europe

EN 1706

ISO

UK

BS

US

AA

Japan

JIS

Germany

DIN

Sweden

SIS

France

NF

Italy

UNI

43400 AISi10Mg(Fe) 239 D

44300 AISi12 (Fe) LM20 ADC2 230 D 4263 A-S12

44400 AISi9 4255 AS-9

46000 AISi9Cu3(Fe) LM24 B380.0 ADC10 226 D 4250 A-S9U3 5075

46100 AISi11Cu2(Fe) LM2 ADC12

46500 AISi9Cu3(Fe)(Zn) LM24 A380.0 226/3 4252 A-S9U3X 4525

47100 AISi12Cu1(Fe) LM20 A413.0 ADC1 231D 4260 A-S12U 5079

Alloy key.

We cannot be held responsible or any possible errors, there is no exactitude in the alloy comparisons, but rather they indicate comparable alloys, Types.

Alloys or pressure die casting Alloys or sand and chill casting


SS-EN 1780-I SS-EN 1780-2

numerical chemical

Older

standard

State1) Tensile

strength

Rm MPa2)

min.

Proo stress

Rp0.2 MPa2)

min.

Elongation

A50 %

min.

Brinell

hardness

HBS min.

Density

approx.

value

kg/dm3

St re ng th Ma ch in a-

bility

Welda-

bility

Corrosion

resistance

Decorative

anodizing

Polisha-

bility

Linear thermal

expansion

293-3730K

0K

-1

Electrical

conduc-

tivity

MS/m

Thermal

conducti-

vity

W/m0K

EN AB-42000 EN AB-A1 Si7Mg Type

4244

SFST6KFKT6KT64

140220170260240

8018090220200

212.512

5075559080

Under-eutectic alloy with good castability properties. Goodmachinability, good weldability and high resistance tochemical attack.

For complicated, pressure-tight castings subjectedto atigue loading. Good resistance to corrosion andhigh strength.

2.65 Good Good Good Good/

Satisac-

tory

Poor Satisac-

tory

22x10-6

19-25 150-170

E N AB- 4300 0 E N AB- A1Si 1 0 Mg (a ) T yp e

4253

SFST6KFKT6KT64

150220180260240

8018090220200

212.512

5075559080

Near-eutectic alloy with excellent castability propertiesand good resistance to hot tearing. Good machinability, ex-

cellent weldability and high resistance to chemical attack.

For complicated, thin-walled, pressure-tight castingssubjected to atigue loading. Very good resistance to

corrosion and high strength ater heat treatment.

2.65 Good, vid

ldr.hrd-ning mycket

Good

Good Excel-

lent

Good Not

recom.

Poor 21x10-6

19-25 150-170

E N AB- 4310 0 E N AB- A1Si 1 oMg (b ) T yp e

4253

SFST6KFKT6KT64

150220180260240

8018090220200

212.512

5075559080

Near-eutectic alloy with excellent castability propertiesand good resistance to hot tearing. Good machinability, ex-cellent weldability and high resistance to chemical attack.

For complicated, thin-walled, pressure-tight andcorrosion-resistant castings subjected to atigueloading. Good resistance to corrosion and highstrength ater heat treatment.

2.65 Good, vid

ldr.hrd-

ning mycket

Good

Good Excel-

lent

Good/

Satisac-

tory

Not

recom.

Poor 21x10-6

18-25 140-170

E N AB -432 00 E N AB -A1S i 1 0 M g( cu ) T yp e

4253

SFST6KFKT6

160220180240

8018090200

1111

50755580

Near-eutectic alloy with excellent castability propertiesand good resistance to hot tearing. Good machinability andexcellent weldability.

For complicated, thin-walled, pressure-tight andcorrosion-resistant castings subjected to atigueloading. High strength ater heat treatment, but withlimited properties concerning resistance to corrosion.

2.65 Good, with

artifcial

ageing very

good.

Good Excel-

lent

Satisac-

tory

Not

recom.

Satisac-

tory

21x10-6

16-24 130-1 70

EN AB- 44 10 0 EN AB- A1 Si 1 2 (b ) Ty pe

4261

SFKF

150170

70

80

45

5055

Eutectic alloy with excellent castability properties, excel-lent uidity and high resistance to hot tearing. Goodmachinability, excellent weldability and high resistance tochemical attack.

For complicated, thin-walled, pressure-tight andcorrosion-resistant castings subjected to atigueloading. Good elongation properties and good resis-tance to corrosion.

2.65 Poor Satisac-

tory

Excel-

lent

Good/

Satisac-

tory

Not

recom.

Poor 20x10-6

16-23 130-1 60

EN AB- 44 20 0 EN AB- A1 Si 1 2 (a ) Ty pe

4261

SFKF

150170

7080

56

5055

Eutectic alloy with excellent castability properties, excel-lent uidity and high resistance to hot tearing. Goodmachinability, excellent weldability and high resistance tochemical attack.

For complicated, thin-walled, pressure-tight andcorrosion-resistant castings subjected to atigueloading. Good elongation properties and very goodresistance to corrosion.

2.65 Poor Satisac-

tory

Excel-

lent

Good Not

recom.

Poor 20x10-6

17-24 140-170

EN AB 46200 EN AB-A1 Si8Cu3 Type

4251

SFKF

150170

90100

11

6075

Universal alloy with very good castability. Slight Slighttendency towards orming surace and internal cavities.

Good machinability and good weldability.

For wide range o applications, also or complicatedand thin-wall castings.

2.75 Good Good Good Poor Not

recom.

Satisac-

tory

21x10-6

14-18 110-1 30

EN AB 46400 EN AB-A1Si9Cu 1 Mg - SFKFKT6

135170275

90100235

111.5

6075105

Universal alloy with very good castability. Slight tendencytowards orming surace and internal cavities. Good machi-nability and good weldability.

For wide range o applications, also or complicatedand thin-wall castings.

2.65 Excellent Good Good Poor Not

recom.

Poor 21x10-6

16-22 130-1 50

E N A B 4 70 00 E N A B- A1 Si 1 2 (C u) Ty pe

4260

SFKF

150170

8090

12

5055

Eutectic alloy with excellent castability properties, excel-lent uidity and high resistance to hot tearing. Goodmachinability, excellent weldability.

For complicated, thin-walled, pressure-tight andcorrosion-resistant castings subjected to atigueloading, but with limitations involving resistance tocorrosion and toughness.

2.65 Poor Satisac-

tory

Excel-

lent

Satisac-

tory

Not

recom.

Satisac-

tory

20x10-6

16-22 130-1 50

A ll oy s f or sa nd an d ch il l c as ti ng M ec ha ni ca l p ro pe rt ie s o f s ep ara te ly ca st te st ba rs G en er al de sc ri pt io n o f p ro pe rt ie s Suitable applications Mechanical and physical properties

SS = Swedish standard

EN = European standard

AB = Aluminium ingots

1)S = Sand cast

K = Chill cast

F = Cast state

2) 1MPa = 1N/mm2

T6 = Solution annealed and artifcially aged.

T64 = Solution annealed and artifcially aged (underaged).

(The description corresponds to SS-EN 1706)

Aluminium alloys or sand and chill casting ctd.


7/8

Drops

Ingots

Product descriptionDescriptions and pictures ollow below o our products. All o our products can be delive-red in the orm o ingots o r drops. The casting alloys can also be delivered in liquid orm,which is the most cost-eective orm o deliver y or our customers. Normally, aluminiumalloys or casting are delivered as ingots and deoxidization aluminium as drops. The ing-ots are stacked in lots, where t wo lots are bundled together or more e fcient handlings.Drops are delivered in loose orm on loading platorms or in big bags. All dimensions andweights are nominal, deviations may occur.

Lot (2 lots together)

2

Deoxidization aluminium.Stena Aluminium also produces aluminium or deoxidization purposes. These products arealso produced on the basis o customer-specifc requirements, where the composition is pre-dominantly based upon the aluminium content, or example 96% aluminium. These productsare primarily delivered in big bags or on loading platorms.

Stenal460 (light pressure).A development o the most common pressure die casting alloy, AlSi9Cu3Fe, but with in-creased strength properties, produced by Stena Aluminium together with customers andother interested parties. Low iron content, o manganese valances and refned with stron-tium. Excellent high strength properties, good atigue properties and good ductility. Thealloy is a good alternative to primary aluminium alloys. Can be heat-treated.

Material Min. % Max %

Si 8,70 9,40

Fe 0,50 0,60

Cu 2,70 3,30

Mn 0,30 0,40

Mg 0,35 0,45

Cr - -

Ni - 0,30

Zn - 1,20

Pb - 0,20

Sn - 0,10

Ti 0,05 0,10

Sr 0,030 0,05

Ca - 0,003

P - 0,002

Sb - 0,005

Chemical composition

Proo stressR

p0.2,MPa,min.

Tensile strengthR

m,MPa, min

ElongationA

25m,%

Brinell hardnessHB

m5/250,

r.t N2(1)

Ac 220 (22) 361 (25) 2,8 (0,6) 118 110

Wc 226 352 (6) 2,6 (0,3) 123 107

Mechanical properties

The standard deviation (1s) is given within parentheses- air-cooled (ac) and water-cooled (wc) or separately cast testbars

Proo stressR

p0.2,MPa,min.

TensilestrengthR

m

,MPa, min

ElongationA

25m,%

Q,Rm+150 logA

5

Ac+Wc 225 (11,3) 357 (9,5) 2,7 (0,26) 422

Mechanical properties- average value or both air-cooled and water-cooled test bars

Other materials each max 0.05 % and in totalmax. 0.25 %. Note: The Sr content is higher ordelivery-state ingots.For castings 150-300 ppm

Weight, g Height, mm Diameterbottom, mm

Diametertop, mm

70-120 35 40 30

Weight, kg Height, mm Length, mm Width, mm

6,5 60 600 90

Weight, kg Height, mm Length, mm Width, mm

1 000 750 1 200 600


8/85 23

Liquid aluminium deliveries.

Stena Aluminium is the frst producerin the Nordic region to be able to de-liver aluminium in liquid orm, thus ur-ther helping our customers to increasetheir success and competitive strength.The concept o liquid aluminium deliv-eries involves large environmental andcost-related benefts. The liquid alu-minium is delivered in large thermosesthat maintain the heat during trans-

port rom the smelter to the custom-er.

During transport, heat loss is approx.5-9 degrees per hour, however, by leav-ing our smelter at a pre-adjusted tem-perature, the temperature upon arrivalcan be at the level the customer re-quires or his process.

The thermoses contain approx. eighttons and in Sweden we can deliver upto three thermoses at a time. By deliv-ering a ull load o liquid aluminium, wesave approx. 2 tons o greenhouse gasemissions, in comparison with deliver-

ing ingots. This is and will be an increas-ingly important competitive advantageThere are both direct and long-termsavings or the customer in using liquidaluminium deliveries instead o ingots,a number o which are mentioned be-low.

Direct savings, effectsDiminished metal loss.

Diminished energy consumption.Less bound capital.Smaller handling costs.Diminished maintenance costs.Increased environmental savings.

Long-term savings, effects.Diminished investment needs.Increased efciency o existingspace.Potential or quality improve-ments.More consistent metal tempera-ture.

When delivery o liquid aluminium istaken in a thermos, the customer canuse it in production directly throughthe tip station that the thermos is setup in. In this way, it is even possible toreplace prior on-site urnaces with thethermos.

Heating equipment can be connect-ed up to the tip station to ensure thatthe temperature is kept at the right

level according to the needs o thecasting process. It is even possible toconnect up magnetic stirring, whichensures that the metal circulates con-tinuously, thereby increasing the ho-mogeneity and consistency o themetal in the heat.

Stena Aluminium is the frst producer in the Nordic region to beable to deliver aluminium in liquid orm, thus urther helping ourcustomers to increase their success and competitive strength.

sten a aluminium alloys 2008 english

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