KML Material Characteristics


approx. 7,2 kg/dm³
(71,5 kN/m³ )

Tensile strenght
≥ 150 MPa for fittings
≥ 200 MPa for pipes

Compressive strength
approx. 3 to 4 times the value for tensile strength

Shear strength
approx. 1.1 to 1.6 times the value for tensile strength

Crushing strength
(peak compressive strength) ≥ 350 MPa

Modulus of elasticity
8•104 to 12•104 N/mm²

Poisson’s ratio

Coefficient of thermal conductivity
50-60 W/mK (at 20º C)

Coefficient of linear expansion
only 0.0105 mm/mK (between 0 and 100º C), more or less similar to concrete; can be set in concrete without any difficulty