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COR-TEN

“Design The Future”

W hat is Corten Steel?

Features

Chemical Composition

Advantages

Uses

Application Examples

CONTENTS

Corten Steel

is a steel

with rusty appearance

that has very aesthetic

qualities and is being

increasingly used

in design.

W hat is Corten Steel?

Weathering steels are a family of low carbon

steel alloys that were specifically developed

to provide higher strength and more

importantly eliminate the need to paint to

protect against the elements (rain, snow,

humidity, sun, salt, etc.).

Corten, is the trademark name

for weathering steels.

The name Cor-Ten

refers to the two

distinguishing

properties of this type

of steel: corrosion

resistance and tensile

strength.

Features

The original Corten

received the standard

designation A242

(Corten A)

and A588 (Corten B)

from the ASTM

International

standards group.

W eather Resistance

While weather resistance

depends on the product

grade and the application

environment, Corten's

weather resistance is

nearly 4-8 times that

of ordinary steel.

W eldability

Corten can be

welded.

Paint Durability

Corten is paintable in the

same way as ordinary steel.

In addition, even if a painting

defect should occur, Corten

suppresses the progress of rust

area and, accordingly, prolongs

the service life of the paint,

thereby reducing repainting

costs.

W orkability

Corten possesses

workability similar

to ordinary steels

of same strenght.

Chemical Composition

Corten is a coppe

chromium alloy

steel.

Grade

Corten A

Corten B

0,12

0,16

0,65

0,40

0,030

0,25-0,75

0,30-0,50

0,20-0,50 0,50-1,25

0,40-0,65

0,25-0,55

0,25-0,40

0,02-0,10

0,01-0,20

0,030

C Si Mn P S Cr Cu V Ni

Chemical Composition (%)

Weathering steel grade chemical composition (excl. iron) by weight (%)

This alloy displays a greater level of resistance

to atmospheric corrosion when compared to

other unalloyed steels. This is because the steel

forms a protective layer on its surface under

the influence of the weather.

The layer protecting the surface develops and

regenerates continuously when subjected to the

influence of the weather.

The speed of the

colour transition is

dependent on the

frequency of wet

and dry cycles the

steel undergoes.

Changes in rust

apperance

0,5

months

1,5

months

years

Generally, Corten steel will patina or rust within 6 months of atmospheric exposure.

Corten, if left alone, will take 2-4 years to reach its peak patina and then should remain in that

state with very little change.

In the initial stage of application, Corten shows a yellowish appearange.This is followed by a

gradual change in the color of the protective rust from brown to a stable dark brown after one

to two years in general application environments.

Oct. 1969

(Under construction)

Apr. 1973

(4 years after completion)

Sep. 1977

(8 years after completion)

May 1991

(22 years after completion)

Jul. 2010

(40 years after completion)

Hokkaido Centennial Memorial Tower

5 Reasons To Use

Corten Steel

Advantages

Corten has properties that

are very advantageous

High-strength

Corten is useful for heavy-duty structures.

Attractive appearance

The protective rust that Corten

steel develops has a distinctive

reddish-brown appearance that is

particularly popular among

architects and design engineers.

Longevity

Corten steel has anti-corrosive

properties that gives it an

advantage over other structural

steels. The naturally occurring rust

that it develops helps to lengthen

the lifecycle of a weathering steel

structure, which in turn keeps

costs to a minimum.

Unpainted use

Because Corten has high weather

resistance, it can be used without

painting. Unpainted applications not only

offer the economic advantage of reducing

repainting costs; they also offer aesthetic

benefits associated with the calming color

of the protective rust.

Saving maintanance cost

Corten is a very low maintenance steel which is ideal

for structures where maintenance can be difficult and

dangerous such as bridges, or where disruption

needs to be minimised such as around major roads

and railways.

The two main

types of Corten

steel are: Corten

A, which is

typically used for

architectural

purposes and purposes and

Corten B, which

is often used in

structures.

Uses

Corten A and Corten B, have

different applications based on the

thickness. Corten A is often used

in housing structures, construction

industry and freight cars. Corten

B, is used primarily in urban

furnishing, passenger ships or

cranes.

Used particularly in

building, in public

spaces (street

furniture) or to make

architectural sculptures,

bridges, signs,

chimineas and fire pits.

The unpainted

application of

Corten

Application Examples

The Red Sea Hotel

Jeddah/SAUDI ARABIA

Corten Steel edging

Sculpture

QATAR

Corten Steel leaf

sculpture

Istanbul Finance

Center/TURKEY

Corten Steel planters

Fire Pits

ISRAEL

Corten Steel fire pits

Budin Chemistry

Izmir/TURKEY

Building facade and

window jamb made of

Corten Steel

Mint Kagithane

Istanbul/TURKEY

Counter made of Corten

Steel

Kandilli/Villa

Istanbul/TURKEY

Corten Steel retaining

wall

Göcek/Villa

Mugla/TURKEY

Corten Steel door

Asbos W ine Factory

Çanakkale/TURKEY

Corten Steel pivot door

Sculpture

Paris/FRANCE

Istanbul Finance

Center/TURKEY

Corten Steel sculpture

Corten Steel railing

Marin Tobacco Shop

Istanbul/TURKEY

Building facade made of

Corten Steel

Mint Kağıthane

Istanbul/TURKEY

Building facade made of

Corten Steel

Şişecam Headquarters

Istanbul /TURKEY

Perforated Corten Steel

panel

Lord’s Palas Hotel

CYPRUS

Corten Steel planter

Corten Steel fire pit

Park project

Erbil/IRAQ

Corten Steel edging

Yeşilyaka Koru/Villa

Istanbul/TURKEY

Corten Steel edging

Istanbul Finance

Center/TURKEY

Corten Steel bicycle

racks

IMM Halic Regional

Chief Istanbul/TURKEY

Corten Steel steps

IMM

Izmir/TURKEY

Corten Steel 100th anni-

versary monument

Hasankeyf Archeopark

Batman/TURKEY

Corten Steel door

Corten Steel lighting pole

Corten Steel railing

Corten Steel edging

Corten Steel dome

Kandilli /Villa

Istanbul/TURKEY

Corten Steel staircase

Corten Steel railing

Corten Steel bridge

Lord’s Palace Hotel

CYPRUS

Corten Steel planter

Beylikduzu Park

Istanbul/TURKEY

Corten Steel 3D peg

sculpture

Fair

Istanbul/TURKEY

Corten Steel bench

Kandilli /Villa

Istanbul/TURKEY

Corten Steel railing

Kingdom of Commagene

Adiyaman/TURKEY

Expanded Corten Steel

Mint Kagithane

Istanbul/TURKEY

Corten Steel letter box

Beykoz/Villa

Istanbul/TURKEY

Corten Steel bollard

Bodrum/Villa

Mugla/TURKEY

Building facade and door

eave made of Corten

Steel

Istanbul Finance

Center/TURKEY

Corten Steel trash can

Kandilli/Villa

Istanbul/TURKEY

Corten Steel 3D love

sculpture

Kandilli/Villa

Istanbul/TURKEY

Corten Steel crocodile

sculpture

Uzunyol

Trabzon/TURKEY

Rainwater grate made of

Corten Steel

Fair

Sapanca/TURKEY

Corten Steel decorative

panel

Kandilli/Villa

Istanbul/TURKEY

Corten Steel wine cellar

National Garden

Malatya/TURKEY

Corten Steel notice

boards

Artuklu/YeniYol Street

Mardin/TURKEY

Corten Steel wall

cladding

Cekmekoy Office

Istanbul/TURKEY

Corten Steel watering

planters

Hasankeyf Archeopark

Batman/TURKEY

Corten Steel lighting pole

Merkez Mahallesi,

Efnan Sokak, Aydın Eksi Is

Merkezi, No:12 Flat:2, 34782

Cekmekoy - ISTANBUL / TURKEY

Tel: +90 216 519 52 16

info@cortencelik.com.tr

www.cortencelik.com.tr

SO Mühendislik