For your information

You are being redirected to one of our divisional subsites which contains more detailed information on the required division. To navigate back to the main Invicta Group site, please click the link found in the footer at the bottom of the page.

Board Composition

A 9.5mm thick mechanically-bonded composite panel fire protection system

Quick Quote

Contact Benn Larkin Sarun Vysakham Ben Tan Azim Rizvi Anand Raghavan Our USA Office

Home Durasteel Board Composition

Board Composition

Durasteel Exploded Diagram

Durasteel is a mechanically-bonded 9.5mm thick composite panel of fibre-reinforced cement core (A) and punched steel sheets on both sides (B). The steel sheets are pre-punched and pressed into the core during the manufacturing process, creating a unique, durable and high strength composite panel that provides high-performance fire, blast, impact and moisture resistance properties. Durasteel is classed as ‘noncombustible’ to BS 476: Part 4: 1970 and to Clause 10 of EN 13501-1: 2002.

Durasteel is available in both galvanised and stainless steel finishes.


CHARACTERISTICS OVERVIEW

Weight 22.0 kg/m²

STRENGTH

Flexural Strength (425mm span) 65 N/mm²
Apparent Modules of Elasticity (425mm span) 30.9 kN/mm²
Impact Strength (BS 5669: Part 1) 44.15 J
Impact (Withstand) 4000 J
Impact Resistant (Projectile) 2793 J

MOISTURE

Natural Moisture Content by Weight 7-8%

THERMAL

Thermal Conductivity at 20 degrees Celsius (BS 874) 0.55 W/Mk
Radiant Heat Reduction through Panels 9.30 to 2.53 Km/m²

ACOUSTIC

Sound Reduction Index 7-8%

FIRE

Non-Combustible to BS 476 parts 4 & 11 Non-Combustible
Building Regulation Classification Class 0

GENERAL TECHNICAL DATA

Material class Non-Combustible
Surface spread of flame Class 1
Building Regulations classification Class 0
Alkalinity (approximately) pH (core) 10-13
Thermal conductance (approximately) at 20°C W/m²K
60
Coefficient of expansion (20-100°C) m/mK 15 x 10-6
Nominal moisture content (air-dried) % 6
Moisture movement (ambient to saturated) %
Thickness tolerance of standard boards +1.0 to -1.0
Length x Width tolerance of standard boards mm ±2.0
 

Share/Like this page

Accreditations & Affiliations

SpecUp - System Specification Wizard

Answer the 5 short questions below to receive your recommended Durasteel system specifications. Hover over the ? icons for a brief explanation.

Question 1/5

Type of system required?

Question 2/5

Fire rating required?

Question 3/5

Fire integrity-only or integrity and insulation?

Question 4/5

Fire attack risk from one side or both sides of the system?

Question 5/5

Blast rating required in addition to fire rating?

Creating your results page

Thanks for completing the SpecUp, you’ll be redirected to your results shortly.

Click here if you aren't redirected after a few seconds

Start your project

Tell us about your project. Please complete this form. One of our sales team will come back to you with more details. If you prefer, you can drop us an email.





    Project details




    Attach any files that may assist us with your enquiry (specs, drawings, bill of quantities, etc.)

    Acceptable file types are .pdf, .jpg, .dwg, .xls, .xlsx, .doc, .docx, .zip and .rar up to a maximum of 15mb. For files larger than this, please use the external file upload link below.