Structural Core Materials

GURIT® CORECELL™ A

STRUCTURAL CORE MATERIAL
  • Ultra tough foam suited for slamming applications
  • Exceptional impact tolerance
  • Suitable for dynamically-loaded structures
  • Superior styrene and temperature resistance to linear PVC
  • Highly thermoformable
  • Ideal for resin infusion

Introduction

Gurit® Corecell™ A is the original Corecell material, developed because of frustrations with inadequate PVC core technology in marine sandwich structures. Gurit® Corecell™ A is well known for it’s incredible toughness and resistance to cracking, which comes from its high ductility. Gurit® Corecell™ A can elongate up to 65% in shear before failure, making core shear failure in a laminate almost impossible.

Tests and experience show that Gurit® Corecell™ A is the most reliable core material for dynamic loading situations where PVC and balsa may fail due to poor shear elongation properties.

For the manufacturer, Gurit® Corecell™ A offers the benefit of high resistance to styrene and other chemicals and better thermal stability than linear-PVC foam. Gurit® Corecell™ A is also highly thermoformable, which is useful in many applications where cutting the core material is undesirable.

Gurit® Corecell™ A is available in every resin infusion format and is compatible with polyester, vinylester and epoxy resin systems. The low resin absorption characteristics of Gurit® Corecell™ and it’s unique knife-cut formats deliver higher performing infusions, low resin cost and low weight. This combination makes Gurit® Corecell™ a key part of a reliable package.

Technical Data

​Sheet Sizes
DENSITY
HALF SHEET SIZE NOMINAL SHEET SIZE
mm inches mm inches
A400 1220 x 1220 48 x 48 1220 x 2440 48 x 96
A450 1220 x 1220 48 x 48 1220 x 2440 48 x 96
A500 1220 x 1220 48 x 48 1220 x 2440 48 x 96
A550 1180 x 1180 46.5 x 46.5 1180 x 2375 46.5 x 93.5
A600 1120 x 1130 44.5 x 44.5 1130 x 2250 44.5 x 88.5
A800 1015 x 1015 40 x 40 1015 x 2045 40 x 80.5
A1200 915 x 915 36 x 36 915 x 1830 36 x 72
​​Unbonded Thickness
DENSITY
UNBONDED THICKNESS
mm inches
A400 3-40 1/8 - 1 9/16
A450 3-34 1/8 - 1 5/16
A500 3-50 1/8 - 2
A550 3-38 1/8 - 1 1/2
A600 3-35 1/8 - 1 3/8
A800 3-32 1/8 - 1 3/8
A1200 3-30 1/8 - 1 1/4
​Mechanical Properties
TYPE
UNITS A400 A450 A500 A550 A600 A800 A1200
Nominal Density kg/m³ 69 81 92 103 117 150 210
lb/ft³ 4.3 5.0 5.7 6.4 7.3 9.3 13.0
Density Range kg/m³ 64-74 75-86 87-97 98-108 109-124 140-160 200-220
lb/ft³ 4.0-4.6 4.7-5.3 5.4-6.0 6.1-6.7 6.8-7.7 8.7-9.9 12.4-13.6
Compression Strength
MPa 0.62 0.80 1.01 1.23 1.52 2.36 4.23
psi 90 116 146 178 220 342 614
Compressive Modulus
ASTM D1621 (2010)
MPa 28 37 46 55 67 102 178
psi 4061 5366 6672 7977 9718 14794 25817
ASTM D-1621 (1937b) MPa 37 48 61 74 91 141 251
psi 5366 6962 8847 10733 13198 20450 36404
Shear Strength MPa 0.83 0.99 1.14 1.29 1.48 1.95 2.82
psi 120 144 165 187 215 283 409
Shear Modulus
MPa 22 27 32 37 43 60 93
psi 3191 3916 4641 5366 6237 8702 13489
Shear Elongation % 71 69 67 66 64 58 49
Tensile Strength MPa 1.18 1.38 1.58 1.77 2.01 2.60 3.67
psi 171 200 229 257 292 377 532
Tensile Modulus MPa 56 70 84 98 117 166 265
psi 8122 10153 12183 14214 16969 24076 38435
Thermal Conductivity W/mK 0.03 0.03 0.04 0.04 0.04 0.04 0.05
Dimensional Stability HDT °C 63 63 63 63 63 63 63
°F 145 145 145 145 145 145 145
​Third Party Certifications
CERTIFICATE ISSUER CERTIFICATE
American Bureau of Shipping 01-NO218766-2-PDA
Det Norske Veritas K-5904
Germanischer Lloyd WP 1410003 HH