Sandvik 9RU10 is a precipitation-hardenable steel of type 17Cr/7Ni PH. Compared with the other Sandvik spring wire grades Sandvik 9RU10 has:Excellent mechanical properties; very high tensile strength and hardness levels can be achievedCorrosion resistance comparable to ASTM 304L or ASTM 316L depending on conditionRetained mechanical properties at temperatures up to at least 400°C (750°F)Very good relaxation propertiesGood weldability Springs coiled from Sandvik 9RU10 wire virtually retain their original form after tempering - for example, as loops and hooks, whereas springs made from conventional 18/8 steels generally suffer deformation, which has to be allowed for when coiling. Service temperature: -200 to 350°C (-330 to 660°F) Information provided by Sandvik ASTM 631; EN 1.4568 |