A beta titanium alloy comprising: from 15% to 40% by weight of tungsten; and the balance amount of titanium; or alternatively, from 15% to 40% by equivalent weight of tungsten; at least one metal element selected from the group consisting of iridium, tantalum, platinum, gold, iron, niobium, zirconium, tin and molybdenum; and the balance amount of titanium; wherein: the amount of tungsten and each one of the metal elements is calculated by the following formula: Ti − Weq % W = Ti − x % W − y 1 / F 1 % M 1 − y 2 / F 2 % M 2 − y 3 / F 3 % M 3 − y 4 / F 4 % M 4 − y 5 / F 5 % M 5 − y 6 / F 6 % M 6 − y 7 / F 7 % M 7 − y 8 / F 8 % M 8 − y 9 / F 9 % M 9 being: Weq weight% the amount of the metal element calculated by the following equation: Weq weight % = substituted amount of tungsten wt. % / equivalence factor F Ti the amount of Titanium; x the amount of tungsten and being higher than 0; each M 1-9 is different and corresponds to the metal element selected from iridium, tantalum, platinum, gold, iron, niobium, zirconium, tin and molybdenum; y 1-9 is the amount of each metal element M 1-9 and each y 1-9 is independently selected from 0 and higher than 0; F 1-9 is the equivalence factor of each M 1-9 as defined as follows: Element Equivalence factor M 1 Ir F 1 1.8 M 2 Ta F 2 0.37 M 3 Pt F 3 0.68 M 4 Au F 4 0.81 M 5 Nb F 5 0.47 M 6 Fe F 6 3.3 M 7 Zr F 7 0.8 M 8 Sn F 8 0.05 M 9 Mo F 9 1.75 [Weq = x+ ∑(y 1 /F 1 +y 2 /F 2 + y 3 /F 3 +y 4 /F 4 +y 5 /F 5 +y 6 /F 6 +y 7 /F 7 +y 8 /F 8 +y 9 /F 9)] is from 15 to 40; x+ ∑(y 1 +y 2 +y 3 +y 4 +y 5 +y 6 +y 7 +y 8 +y 9) is from 4.5 and 49.9; wherein: the alloy comprises from 70% to 100% by volume of an equiaxed beta grain structure. from 15% to 40% by weight of tungsten; and the balance amount of titanium; or alternatively, from 15% to 40% by equivalent weight of tungsten; at least one metal element selected from the group consisting of iridium, tantalum, platinum, gold, iron, niobium, zirconium, tin and molybdenum; and the balance amount of titanium; wherein: the amount of tungsten and each one of the metal elements is calculated by the following formula: Ti − Weq % W = Ti − x % W − y 1 / F 1 % M 1 − y 2 / F 2 % M 2 − y 3 / F 3 % M 3 − y 4 / F 4 % M 4 − y 5 / F 5 % M 5 − y 6 / F 6 % M 6 − y 7 / F 7 % M 7 − y 8 / F 8 % M 8 − y 9 / F 9 % M 9 being: Weq weight% the amount of the metal element calculated by the following equation: Weq weight % = substituted amount of tungsten wt. % / equivalence factor F Ti the amount of Titanium; x the amount of tungsten and being higher than 0; each M 1-9 is different and corresponds to the metal element selected from iridium, tantalum, platinum, gold, iron, niobium, zirconium, tin and molybdenum; y 1-9 is the amount of each metal element M 1-9 and each y 1-9 is independently selected from 0 and higher than 0; F 1-9 is the equivalence factor of each M 1-9 as defined as follows: Element Equivalence factor M 1 Ir F 1 1.8 M 2 Ta F 2 0.37 M 3 Pt F 3 0.68 M 4 Au F 4 0.81 M 5 Nb F 5 0.47 M 6 Fe F 6 3.3 M 7 Zr F 7 0.8 M 8 Sn F 8 0.05 M 9 Mo F 9 1.75 [Weq = x+ ∑(y 1 /F 1 +y 2 /F 2 + y 3 /F 3 +y 4 /F 4 +y 5 /F 5 +y 6 /F 6 +y 7 /F 7 +y 8 /F 8 +y 9 /F 9)] is from 15 to 40; x+ ∑(y 1 +y 2 +y 3 +y 4 +y 5 +y 6 +y 7 +y 8 +y 9) is from 4.5 and 49.9; wherein: the alloy comprises from 70% to 100% by volume of an equiaxed beta grain structure. the amount of tungsten and each one of the metal elements is calculated by the following formula: Ti − Weq % W = Ti − x % W − y 1 / F 1 % M 1 − y 2 / F 2 % M 2 − y 3 / F 3 % M 3 − y 4 / F 4 % M 4 − y 5 / F 5 % M 5 − y 6 / F 6 % M 6 − y 7 / F 7 % M 7 − y 8 / F 8 % M 8 − y 9 / F 9 % M 9 being: Weq weight% the amount of the metal element calculated by the following equation: Weq weight % = substituted amount of tungsten wt. % / equivalence factor F Ti the amount of Titanium; x the amount of tungsten and being higher than 0; each M 1-9 is different and corresponds to the metal element selected from iridium, tantalum, platinum, gold, iron, niobium, zirconium, tin and molybdenum; y 1-9 is the amount of each metal element M 1-9 and each y 1-9 is independently selected from 0 and higher than 0; F 1-9 is the equivalence factor of each M 1-9 as defined as follows: Element Equivalence factor M 1 Ir F 1 1.8 M 2 Ta F 2 0.37 M 3 Pt F 3 0.68 M 4 Au F 4 0.81 M 5 Nb F 5 0.47 M 6 Fe F 6 3.3 M 7 Zr F 7 0.8 M 8 Sn F 8 0.05 M 9 Mo F 9 1.75 [Weq = x+ ∑(y 1 /F 1 +y 2 /F 2 + y 3 /F 3 +y 4 /F 4 +y 5 /F 5 +y 6 /F 6 +y 7 /F 7 +y 8 /F 8 +y 9 /F 9)] is from 15 to 40; x+ ∑(y 1 +y 2 +y 3 +y 4 +y 5 +y 6 +y 7 +y 8 +y 9) is from 4.5 and 49.9; wherein: the alloy comprises from 70% to 100% by volume of an equiaxed beta grain structure. Weq weight% the amount of the metal element calculated by the following equation: Weq weight % = substituted amount of tungsten wt. % / equivalence factor F Ti the amount of Titanium; x the amount of tungsten and being higher than 0; each M 1-9 is different and corresponds to the metal element selected from iridium, tantalum, platinum, gold, iron, niobium, zirconium, tin and molybdenum; y 1-9 is the amount of each metal element M 1-9 and each y 1-9 is independently selected from 0 and higher than 0; F 1-9 is the equivalence factor of each M 1-9 as defined as follows: Element Equivalence factor M 1 Ir F 1 1.8 M 2 Ta F 2 0.37 M 3 Pt F 3 0.68 M 4 Au F 4 0.81 M 5 Nb F 5 0.47 M 6 Fe F 6 3.3 M 7 Zr F 7 0.8 M 8 Sn F 8 0.05 M 9 Mo F 9 1.75 [Weq = x+ ∑(y 1 /F 1 +y 2 /F 2 + y 3 /F 3 +y 4 /F 4 +y 5 /F 5 +y 6 /F 6 +y 7 /F 7 +y 8 /F 8 +y 9 /F 9)] is from 15 to 40; x+ ∑(y 1 +y 2 +y 3 +y 4 +y 5 +y 6 +y 7 +y 8 +y 9) is from 4.5 and 49.9; wherein: the alloy comprises from 70% to 100% by volume of an equiaxed beta grain structure.