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GMTex®

Polyamide or Polypropylene

Based on GMT, the composite GMTex® has been further developed for applications demanding even greater impact resistance, strength, and durability. These moldable panels are favored as lightweight, high-performance replacements for steel, aluminum, magnesium, and other industrial materials, or alternatively as additional reinforcement for GMT panels.

GMTex® high-performance thermoplastic composites consist of a polypropylene or polyamide resin matrix that is reinforced with both woven and randomly laid fibers. This multi-layer glass fiber weave technology makes the composite material a great candidate for use in structural vehicle components, such as front ends and bumper brackets, among other applications.

General properties of GMTex® panels
Criteria
Thickness availability (in panel form)
GMTex® Composites
2.5 - 5.0 mm (0.098 - 0.198 in.)
Criteria
Thickness tolerance (In 8-ft panel form)
GMTex® Composites
'+/- 0.2 mm (0.008 in.)
Criteria
Width tolerance (In 8-ft panel form)
GMTex® Composites
'+/- 1.0 mm (0.04 in.)
Criteria
Length tolerance (In 8-ft panel form)
GMTex® Composites
'+/- 5.0 mm (0.197 in.)
Criteria
Standard & custom sizes available
GMTex® Composites
Max. width 1.0 m (3.28 ft)
Criteria
Forming process (if molded part desired)
GMTex® Composites
Compression molding
Criteria
Custom colors
GMTex® Composites
Yes
Criteria
Translucent possible
GMTex® Composites
Yes
Criteria
Water resistant
GMTex® Composites
Yes
Criteria
Impact resistance (failure mode)
GMTex® Composites
Very good (ductile; will not crack or splinter)
Criteria
Resistance to rot, corrosion, mildew
GMTex® Composites
Excellent
Criteria GMTex® Composites
Thickness availability (in panel form) 2.5 - 5.0 mm (0.098 - 0.198 in.)
Thickness tolerance (In 8-ft panel form) '+/- 0.2 mm (0.008 in.)
Width tolerance (In 8-ft panel form) '+/- 1.0 mm (0.04 in.)
Length tolerance (In 8-ft panel form) '+/- 5.0 mm (0.197 in.)
Standard & custom sizes available Max. width 1.0 m (3.28 ft)
Forming process (if molded part desired) Compression molding
Custom colors Yes
Translucent possible Yes
Water resistant Yes
Impact resistance (failure mode) Very good (ductile; will not crack or splinter)
Resistance to rot, corrosion, mildew Excellent
Mechanical properties of GMTex® Panels
Criteria
Tensile strength MD*
Test Methods
ISO 527 / PA_098
Values
70 - 390 MPa
Criteria
Tensile modulus MD*
Test Methods
ISO 527 / PA_098
Values
5,200 - 18,200 MPa
Criteria
Elongation at break MD*
Test Methods
ISO 527 / PA_098
Values
1.8 - 2.5%
Criteria
Impact strength MD* (Charpy 4.0 mm)
Test Methods
ISO 179-12fn / PA_097
Values
75 - 260 kJ/m2
Criteria Test Methods Values
Tensile strength MD* ISO 527 / PA_098 70 - 390 MPa
Tensile modulus MD* ISO 527 / PA_098 5,200 - 18,200 MPa
Elongation at break MD* ISO 527 / PA_098 1.8 - 2.5%
Impact strength MD* (Charpy 4.0 mm) ISO 179-12fn / PA_097 75 - 260 kJ/m2
*MD = Machine direction
GMTex® options
  • Fabric position (middle or outside layers)
  • Fiber content (non-wovens and fabrics)
  • Resin matrix (polypropylene or polyamide)