Stainless steelsfor bridges

In co-operation with

Duplex stainless steel for bridges

Structural design:• Modern design rules &

design guidance for duplex grades

Fabrication:• Material suitabe for

cutting, forming and welding using common techniques

Durability:• High Corrosion

resistance • Less maintenance• Longer service life

Economics:• High strength steel

minimises initial cost • Low Life Cycle Cost

Environment:• Long term aesthetics• Recycling & re- use

Experience: • Many references

available

In co-operation with

High Strength Duplex Stainless Steels

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Grade Bulk Composition, % (remainder is iron) Strength Fymin (MPa)

Corrosion Resistance Class (Eurocode)

Chromium Nickel Molybdenum

316L 17 10 2 220 IIIDX 2205 22 5 3 460 IV

LDX 2101 21 1.5 0.3 450 III

LDX 2101• Similar corrosion

resistance to 316L, higher strength than 316L

• Good fabrication characteristics

DX 2205• Better corrosion

resistance than 316L, higher strength than 316L

• Good fabrication characteristics

In co-operation with

Design codes & design guidance

http://www.steel-stainless.org/designmanual

In co-operation with

Environmental benefits

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• 85% recycled content Outokumpu stainless steel

• 100% recyclable at end of life• No use of paint, or repair blasting & repainting

during service• No run-off of pollutants into water courses• High strength duplex minimises weight, and

thus minimises use of resources

• Long Life material, long life structure: • Engineering resources, materials, labour,

construction and disruption only needed once for 100+ years

LDX2101 Footbridge, rural Norway

In co-operation with

Environmental Product DeclarationsAudited & published by Institut Bauen und Umwelt e.V. (IBU)

All necessary data for calculating environmental impact.

Download link

Marina Bay Bridge, Singapore DX 2205

In co-operation with

Millennium Bridge

Millennium Bridge

York, UK

Forta DX 2205

Completed in 2001, the first major use of fabricated stainless plate as a structural bridge material .The inclined arch is made from Duplex DX2205; it performs and looks as good as the day it wasinstalled having had no maintenance for nearlytwo decades.

In co-operation with

Celtic Gateway Bridge Holyhead

Celtic Gateway Bridge Holyhead

Wales, UK

Forta DX 2205

Duplex structure close to the harbour in North Wales.

In co-operation with

Critical bridge components using hidden duplex

Countess Wear Road Bridge (1774)

Exeter, UK

Forta DX 2205

…to be ‘sympathetically’ widened.

In co-operation with

Duplex cantilevered supportsfor footbridge extension

In co-operation with

Completed pedestrian/cycleway

• Long Life• Minimal maintenance required in a

difficult access area• “Transparent” duplex balustrade/railing

In co-operation with

New Pooley Road Bridge, UK

New Pooley Road Bridge

Cumbria, UK

Forta LDX 2101

Replacement needed for historical stone bridge swept away during storms and flooding in 2015.

In co-operation with

New Pooley Road Bridge, UK

New Pooley Road Bridge

UK

Forta LDX 2101

• Forta LDX2101 Duplex stainless steel actingcompositely with concrete deck

• Bridge design and material selected to bemore resistant to extreme rainfall/floodingevents

• Aesthetics important in a in a tourist region• Opening Summer 2020

In co-operation with

New Pooley Road Bridge, UK

• UK’s first stainless steel composite road bridge using duplex LDX 2101

• Opening early summer 2020

In co-operation with

Söderström Bridges, Stockholm

Söderström Bridges

Stockholm, Sweden

Forta LDX 2101

Four bridges carrying metro trains, each 174m long.Built in 1957 with carbon steel super structure.Today:• Carrying 340,000 people per day• One train every 3 minutes• But extensive corrosion attack

In co-operation with

Söderström Bridges, Stockholm

In co-operation with

Replacement bridge

Life Cycle Costing & Life Cycle Analysis carried out for Trafikverket (Swedish Traffic Authority) by engineering consultants Bostek AB.

Possible materials for a 120 year design life:• S355 Carbon Steel & painted, with

maintenance • Duplex Stainless Steel, no maintenance

In co-operation with

Construction costs

Duplex stainless structure

EUR

1million

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Painted carbon steel structure

EUR

0.5Million

Life cycle cost summary

In co-operation with

Life Cycle Costing summary

Construction CostsDuplex Forta LDX 2404 structure EUR 1 millionPainted carbon steel structure EUR 0.5 million

Additional cost for Forta LDX 2404 (Total of 4 structures needed ) EUR 2 million

Total Project cost EUR 300 million

Carbon Steel re-painting required every 30 yearsCost for first re-painting EUR 20 millionEvery 30 Years for 120 year life EUR 60 million

In co-operation with

Fabrication

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In co-operation with

Thank you!ContactKloeckner Metals UKValley Farm RoadLeeds, LS10 1SD

Barrie SalterDirectorM: +44(0)7825 754 311E: barrie.salter@kloeckner.comW: www.kloecknermetalsuk.com

In co-operation with

Outokumpu Stainless LtdEuropa Link Sheffield S9 1ZT

Andy BackhouseLead Technical ManagerBA EuropeM: +44(0)7595 609 152E: andy.backhouse@outokumpu.comW: www.outokumpu.com/