Compression strength of concrete according to EN 1992-1-2 3.2.2.1 Table 3.1 is

f_cd(θ_M) = k_c(θ_M) f_cd

f_ck ≤ 50 MPa

For concrete with Siliceous aggregate:

For concrete with Calcareous aggregate:

For concrete according to DS 2426 (Danish Siliceous and Danish Calcareous)

50 MPa < f_ck ≤ 60 MPa

60 MPa < f_ck ≤ 80 MPa

80 MPa < f_ck ≤ 90 MPa

Concrete modulus of elasticity

E_cd(θ_M) = k_c(θ_M)² E_cd(θ_M)

For cross-sections with flanges f_cd and E_cd are determined for both the body and the flange(s). We use θ_M respectively for body and flange(s).

Norwegian annex

 50 MPa < f_ck ≤ 60 MPa

60 MPa < f_ck ≤ 80 MPa

80 MPa < f_ck ≤ 90 MPa

Finnish annex

50 MPa < f_ck ≤ 90 MPa

Strain parameters ε_c1 and ε_cu1 for concrete exposed to fire, according to EN 1992-1-2, Table 3.1, are

Danish annex

ε_cu3(θ_M) = ε_cu3 / k_c(θ_M)