1.2631 is a German Cold work tool alloy steel material grade.it is shock resisting steel. it belong to DIN 17350 standard. Digital Grade material number 1.2631. Metal Steel Grade W-Nr X50CrMoW9-1-1 It is a die steel, use in extrusion moulds, Hot Cast moulds. like aluminium production, Aluminium cutting mold. Our Tool Steel material 100 % ultrasonic tested with good price. Small size steel products make by hot rolled, large size steel products make by forging. 1.2631 with X50CrMoW9-1-1 is equivalent Belong to W-Nr and DIN.