Two-layer multi-strand metallic cord (60; 61; 62; 63; 64; 65; 66) comprising: - an internal layer of the cord made up of J>1 internal strands wound in a helix, each internal strand having two layers (C1, C2) and comprising: • an internal layer made up of Q≥1 internal threads of diameter D1, and • an external layer made up of N>1 external threads of diameter D2 wound around the internal layer, - an external layer of the cord made up of L>1 external strands wound around the internal layer of the cord, each external strand having two layers (C1', C2') and comprising: • an internal layer (C1') made up of Q'≥1 internal threads (F1') of diameter D1', and • an external layer (C2') made up of N'>1 external threads (F2') of diameter D2' wound around the internal layer (C1'), characterized in that the cord satisfies the following relationship: 100 ≤ MC ≤ 175 where MC = J × MI + L × ME / J + L where MI = 200 × cos 4 α × Q × D 1 / 2 2 × cos 4 β + N × D 2 / 2 2 × cos 4 γ / Q × D 1 / 2 2 + N × D 2 / 2 2 where: - D1 and D2 are expressed in mm, - α is the helix angle of each internal strand in the internal layer of the cord, - β is the helix angle of each internal thread in the internal layer within each internal strand, and - γ is the helix angle of each external thread in the external layer within each internal strand, and ME = 200 × cos 4 α ′ × Q ′ × D 1 / 2 2 × cos 4 β ′ + N ′ × D 2 ′ / 2 2 × cos 4 γ ′ / Q ′ × D 1 ′ / 2 2 + N ′ × D 2 ′ / 2 2 where: - D1' and D2' are expressed in mm - α' is the helix angle of each external strand in the external layer of the cord, - β' is the helix angle of each internal thread (F1') in the internal layer (C1') within each external strand, and - γ' is the helix angle of each external thread (F2') in the external layer (C2') within each external strand. - an internal layer of the cord made up of J>1 internal strands wound in a helix, each internal strand having two layers (C1, C2) and comprising: • an internal layer made up of Q≥1 internal threads of diameter D1, and • an external layer made up of N>1 external threads of diameter D2 wound around the internal layer, • an internal layer made up of Q≥1 internal threads of diameter D1, and • an external layer made up of N>1 external threads of diameter D2 wound around the internal layer, - an external layer of the cord made up of L>1 external strands wound around the internal layer of the cord, each external strand having two layers (C1', C2') and comprising: • an internal layer (C1') made up of Q'≥1 internal threads (F1') of diameter D1', and • an external layer (C2') made up of N'>1 external threads (F2') of diameter D2' wound around the internal layer (C1'), • an internal layer (C1') made up of Q'≥1 internal threads (F1') of diameter D1', and • an external layer (C2') made up of N'>1 external threads (F2') of diameter D2' wound around the internal layer (C1'), - D1 and D2 are expressed in mm, - α is the helix angle of each internal strand in the internal layer of the cord, - β is the helix angle of each internal thread in the internal layer within each internal strand, and - γ is the helix angle of each external thread in the external layer within each internal strand, and ME = 200 × cos 4 α ′ × Q ′ × D 1 / 2 2 × cos 4 β ′ + N ′ × D 2 ′ / 2 2 × cos 4 γ ′ / Q ′ × D 1 ′ / 2 2 + N ′ × D 2 ′ / 2 2 where: - D1' and D2' are expressed in mm - α' is the helix angle of each external strand in the external layer of the cord, - β' is the helix angle of each internal thread (F1') in the internal layer (C1') within each external strand, and - γ' is the helix angle of each external thread (F2') in the external layer (C2') within each external strand.