Round bars (dia 150mm-1500mm) Flat and square on request. Alloy Steel (Quenched and tempered or annealed, with certificate EN 10204/3.1 or 3.2. US tested): 25CrMo4, 42CrMo(S)4, AISI 4130, AISI 4140, AISI 4150, 34CrNiMo6, 30CrNiMo8, 31CrMoV9, 18CrNiMo7-6, 16MnCr(S)5, 20MnCr(S)5, etc.