Steel 76F
Designation
Description
Steel 76 °F used: for the manufacture of rails types of RP50, RP65 and РП75 broad gauge for the tracks of industrial railway transport for railway tracks and turnouts of industrial enterprises; types of rails R50, R65, R65K and R75 designed for ribbon and continuous Railways and for the production of turnouts.
Note
M76 °F — hearth rail steel with vanadium.
K76 °F — Converter rail steel with vanadium.
EH76 °F — rail electric furnace steel with vanadium.
Standards
Chemical composition
Fe is the basis.
According to GOST R 51685-2000, the mass fraction of residual elements - chromium, nickel and copper, is not more than 0.15% of each, with a total mass fraction of these elements not exceeding 0.40%. The mass fraction of sulfur and phosphorus is indicated for steel M76F. In the steel grade K76F phosphorus ≤ 0.030%, sulfur ≤ 0.035%. In steel grade E76F phosphorus ≤ 0.025%, sulfur ≤ 0.030%.
For a rail type P65K, the mass fraction of carbon should be 0.83-0.87%. At the same time, the numbers in the steel brand were replaced by 85.
According to GOST R 51685-2000, the mass fraction of residual elements - chromium, nickel and copper, is not more than 0.15% of each, with a total mass fraction of these elements not exceeding 0.40%. The mass fraction of sulfur and phosphorus is indicated for steel M76F. In the steel grade K76F phosphorus ≤ 0.030%, sulfur ≤ 0.035%. In steel grade E76F phosphorus ≤ 0.025%, sulfur ≤ 0.030%.
For a rail type P65K, the mass fraction of carbon should be 0.83-0.87%. At the same time, the numbers in the steel brand were replaced by 85.