Cirrus GIIIx (G3)
Cirrus GIIIx (G3)
Steel based with aluminium coating and ceramic in-layer, G3 is not malleable in the same way as the G2 material,
requiring a certain amount of industrial tooling where shaping is required, supplied in a basic size of 520 x 700mm
or cut to order from that maximum size.
Construction: 2 x aluminised steel sheet with synthetic fibre insert, double formed
Materials: 2 x 0.15 Feran steel, BS6536 AS05, 1mm synthetic fibre
Product Thickness: 4.45mm
Area Density: 3.51kg/m2
Thermal: conductivity @ 150C based on BS874 pt. 2 (guarded hot plate method) 0.11 W/mK
SAE J1361 hot plate test, temperature drop @ 150C- 54C
Internal Exhaust Test: (source/receiver distance 25mm, source/shield hot face distance 12.5mm
receiver: black painted 2.6mm steel, sample size: 25 x 8cm, receiver size: 15 x 10cm,
source running at constant power) horizontal flat sample.
no shield:
source 300C receiver 144C
source 500C receiver 274C
G3 new:
source 350C receiver 52C
source 566C receiver 85C
G3 accelerated salt spray test to ASTM G85 ‘salt water acetic acid test’
source 352C receiver 58C
source 565C receiver 94C
G3 dirt impinged, hot face coated with ‘standard’ dirt mixture at approximately 60gsm
source 349C receiver 64C
source 552C receiver 112C
surface emissivity @ 150C
new: 0.14
heat aged @ 300C 0.18
accelerated salt spray 0.47
Acoustic: noise generated from supported 30 x 21cm flat sample by 0.9g steel ball dropped from 50mm
Impact Noise: 0.6 embossed aluminium: 101 dB(A)
Cirrus G3: 86.5 dB(A)
Attenuation as per Iveco 18-8304 pt 4.15: 10.2 dB(A)
Mechanical: stone impingement as per SAE J4004B (50 chips, 1-3mm diameter)
180 degree peel strength 1.4 N mm
tensile strength parallel to primary corrugations (x) 83 MPa
tensile strength parallel to secondary corrugations (y) 85 MPa
tensile modulus (x) direction 72 MPa