Properties

This range of Granite® organic coated steels is designed for outdoor applications for the building market and comprises a number of speciality products. These products meet all the requirements of this market in terms of original surface finish and end-use properties.

Advantages

Designed by ArcelorMittal for specific applications, the Granite® products in this range meet rigorous requirements in terms of aesthetic quality, flexibility, surface strength, chemical and UV resistance etc. 

 

Various paints are applied to a metallic substrate as part of a continuous process, which ensures optimum adhesion of the coating and improved corrosion resistance of the steel.

 

A wide range of colours and different original surface finishes are proposed, depending on the end use envisaged.

Applications

Granite® Flex, Granite® Deep Mat, Granite® Storm and Granite® Impression Cloudy & Wood products have an original surface finish and very good flexibility, which is particularly recommended for metal roof tile applications. The surface appearance of these coatings can be smooth or grained (Granite® Flex, Granite® Impression Wood for some colours and patterns), structured and matt (Granite® Deep Mat and Granite® Storm) or bicoloured (Granite® Impression Cloudy).
 
Granite® HFX Cool has been designed for constructing standing seam roofs in low temperatures, in the cold environments encountered in Northern and Eastern Europe.
 
Granite® Rain HDS and HDX, with a double-sided finish, are intended for rainwater systems such as gutters, drainpipes and accessories.
 
Granite® Tex has a strong, textured surface highly suitable for applications such as switch boxes and air conditioning units.
 
Granite® Farm has been specially designed for the internal surfaces of cladding and roofing to be used in ventilated agricultural buildings for cattle, poultry, grain storage etc.
 
Granite® PVDF is dedicated to cladding and roofing applications for architectural buildings or buildings exposed to harsh environments where good coating stability is required.

 

Automatic guarantees can be granted for Granite® range products used in exterior cladding or exterior roofing of buildings located in Europe.

For information on the Automatic Guarantee: industry.arcelormittal.com/construction/buildingguarantees

 

NameMain propertiesSurface appearanceApplications
Granite® FlexVery good flexibility, suitable for deep drawingSmooth or grainedApplications requiring a very high level of steel formability: tiles, HVAC equipment
Granite® Deep Mat 35 m & 40 mAesthetic quality: deep matt, wrinkled appearance, very good formability, good UV resistanceWrinkledTiles, cladding
Granite® Storm Nice aesthetic appearance (matt and wrinkled), very good formability, excellent corrosion resistance
Granite® Impression CloudyAesthetic quality and design (contrasted appearance), very good flexibility, suitable for deep drawing, very good UV resistanceBicoloured, cloudyTiles
Granite® Impression WoodAesthetic quality and design, good colour and stability of appearance, good corrosion resistanceWood pattern. Smooth (grained appearance possible only for some colours and patterns)Cladding. Note: Granite® Impression Wood cannot be used for garage doors
Granite® HFX CoolGood formability at low temperature down to -10C, excellent corrosion resistance, very good UV resistanceGrainedStanding seam roofs, accessories and rainwater
systems
Granite® Rain HDSVery good formability, very good corrosion resistance, very good UV resistanceRainwater systems (gutters, drainpipes, accessories)
Granite® Rain HDXFormable at low temperature, very good formability, excellent corrosion resistance, very good UV resistance
Granite® TexVery good abrasion resistance, very good compromise flexibility/surface hardness, very good formability, good UV resistanceTexturedSwitch boxes, air conditioning units, street furniture
Granite® FarmFor the inner surface: very good chemical resistance in a rural environment (farming). For the outer surface, please select an organic coated steel suited to the environment.SmoothRoofing, cladding for agricultural buildings
Granite® PVDF 25 & 35 mVery good UV resistance (stability of colour and surface appearance) and temperature resistance, excellent chemical resistance, very good corrosion resistanceRoofing, cladding for architectural buildings or buildings exposed to an aggressive environment

Recommendations for use

These Granite® products can be processed by cold forming and deep drawing without damaging the top surface. They can be joined using techniques such as clinching, riveting and adhesive bonding.

Technical properties

These organic coated steel products are used for their wide range of technical properties, which depend on the chemical composition and thickness of the paint, the appearance of the coating and the type of substrate. This range of organic coated steels includes a suitable product for every application. The choice of the paint system depends on the technical requirements during processing and specific end use in terms of flexibility, UV, corrosion, abrasion and chemical resistance. Products used to make tiles are thus designed to enable very deep drawing, without damaging the coating. Being very flexible, they can withstand small profiling or drawing radii.

 

The substrates used for these applications are galvanised steel or galfan. The choice depends on the end use and the required corrosion resistance.

 

A temporary removable protective film can be applied on the top side of some products in this range.

 

The technical properties are summarised in the table below. Please contact us for advice on the choice of the most suitable grade for your application.

Standards

These products are in compliance with standard EN 10169.

Mechanical properties

These products are available with a wide range of mechanical properties, depending on the substrate used and the intended application. See properties of the different substrates.

Brand correspondence

 
Granite® Flex
Granite® Deep Mat 35 m
Granite® Deep Mat 40 m
Granite® Storm
Granite® Impression Cloudy
Granite® Impression Wood
Granite® HFX Cool
Granite® Rain HDS
Granite® Rain HDX
Granite® Tex
Granite® Farm
Granite® PVDF 25 m
Granite® PVDF 35 m

Dimensions

Thickness (mm)Min widthGranite® Flex, Granite® Deep Mat 35 m, Granite® Deep Mat 40 m, Granite® Storm, Granite® Impression Cloudy, Granite® Impression Wood, Granite® HFX Cool, Granite® Rain HDS, Granite® Rain HDX, Granite® Tex, Granite® Farm, Granite® PVDF 25 m, Granite® PVDF 35 m
Max width
0.20 ≤ th < 2.007001850

Coating properties

The following table lists the guaranteed properties of the coating applied to a galvanised steel substrate with a zinc coating of minimum 225 g/m2 or 275 g/m2 depending on the product (or an equivalent weight for other substrates).


  Granite® Flex Granite® Deep Mat 35 m Granite® Deep Mat 40 m Granite® Storm Granite® Impression Cloudy Granite® Impression Wood Granite® HFX Cool Granite® Rain HDS Granite® Rain HDX Granite® Tex Granite® Farm Granite® PVDF 25 m Granite® PVDF 35 m
Thickness
25 m35 m40 m50 m35 m35 m55 m35 m55 m35 m35 m25 m35 m
Minimum zinc coating
225 g/m225 g/m225 g/m275 g/m225 g/m225 g/m275 g/m275 g/m275 g/m225 g/m275 g/m225 g/m225 g/m
Gloss (Gardner 60)
10 - 80 GUMaximum 5 GUMaximum 5 GUMaximum 5 GU5 GU: Anticato Dark, Anticato Light, green, red; 20 GU: Terracotta5, 20 or 30 GU depending on the colour40 GU30 or 40 GU depending on the colour30 or 40 GU depending on the colour30 - 50 GU30 GU30 GU30 GU
Surface appearance
Smooth or grainedWrinkledWrinkledWrinkledCloudy effectSmooth (grained appearance possible only for some colours and patterns)GrainedGrainedGrainedTexturedSmoothSmoothSmooth
Adhesion of the coating (T-bend)
≤ 0.5 T≤ 1 T≤ 1 T≤ 1 T≤ 0.5 T≤ 1 T≤ 1 T at 20C, ≤ 1 T at 10C, ≤ 1.5 T at 0C≤ 1 T≤ 1 T≤ 0.5 T≤ 1 T≤ 1 T≤ 1 T
Resistance to cracking on bending (T-bend)
≤ 1 T≤ 2 T≤ 2 T≤ 2 T≤ 1 T≤ 2 T≤ 1 T at 20C, ≤ 3.5 T at 10C, ≤ 3.5 T at 0C≤ 2 T≤ 0.5 T≤ 1 T≤ 2 T≤ 2 T≤ 2 T
Scratch resistance (Clemen)
≥ 2 kg≥ 1.5 kg≥ 1.5 kg≥ 2.5 kg≥ 2 kg≥ 2 kg≥ 2 kg≥ 2 kg≥ 2 kg≥ 3 kg ≥ 2 kg≥ 2 kg
Condensation resistance (QCT)
1000 hours1000 hours1500 hours1500 hours1000 hours1000 hours1500 hours1500 hours1500 hours1000 hours1500 hours1000 hours1500 hours
UV resistance (QUV (UVA + H2O) test (2000 hours))
Gloss retention ≥ 30%; ∆ E ≤ 5Gloss retention ≥ 60%; ∆ E ≤ 3Gloss retention ≥ 60%; ∆ E ≤ 3Gloss retention ≥ 80%; ∆ E ≤ 2  Gloss retention ≥ 60%; ∆ E ≤ 3Gloss retention ≥ 80%; ∆ E ≤ 2Gloss retention ≥ 80%; ∆ E ≤ 2Gloss retention ≥ 60%; ∆ E ≤ 3 Gloss retention ≥ 80%; ∆ E ≤ 2Gloss retention ≥ 80%; ∆ E ≤ 2
UV resistance category
RUV2RUV3RUV3RUV4RUV4RUV4RUV3RUV4RUV4RUV3 RUV4RUV4
Corrosion resistance (salt spray test)
360 hours360 hours500 hours700 hours360 hours360 hours700 hours500 hours700 hours360 hours360 hours360 hours500 hours
Corrosion resistance category
RC3RC3RC4RC5RC3RC3RC5RC4RC5RC3CPI4RC3RC4
Resistance to acids and bases
Good to very goodGoodGoodGoodGood to very goodGood to very goodGood to very goodGood to very goodGood to very goodGood to very goodGood to very goodGood to very goodVery good
Resistance to aliphatic and alcoholic solvents
Very goodVery goodVery goodVery goodVery goodVery goodVery goodVery goodVery goodVery goodVery goodVery goodExcellent
Resistance to ketone solvents
LowLowLowLowLowLowLowLowLowLowVery goodGoodVery good
Resistance to aromatic solvents
GoodGood to very goodGood to very goodGood to very goodGood to very goodGood to very goodGood to very goodGood to very goodGood to very goodGoodVery goodGood to very goodVery good
Resistance to mineral oils
Very goodGood to very goodGood to very goodGood to very goodVery goodVery goodVery goodVery goodVery goodVery goodVery goodVery goodExcellent
 


For commercial information (quotations, deliveries, product availability):

For technical questions about these products: flateurope.technical.assistance@arcelormittal.com


All details provided in the ArcelorMittal Flat Carbon Europe S.A. catalogue are for information purposes only. ArcelorMittal Flat Carbon Europe S.A. reserves the right to change its product range at any time without prior notice.