55NiCrMoV 7 /AISI: 6 F 3
Chemical Composition (%) | C | Mn | Cr | Mo | Ni | V |
% Average | 0,55 | 0,75 | 1,00 | 0,45 | 1,65 | 0,10 |
DIN Analysis | 0,50-0,60 | 0,65-0,95 | 1,00-1,20 | 0,45-0,55 | 1,50-1,80 | 0,05-0,15 |
Thermal Conductivity ( W/ m.K ) | 20°C | 350°C | 700°C |
36,0 | 38,0 | 35,0 |
HEAT TREATMENT | |||
Tempature(°C) | Time (Hour) | Cooling Environment | |
Soft Annealing | 680-710 | 2-5* | Furnace |
Stress Relief Annealing | 600-650 | 2* | Furnace |
Hardening | 840-900 | - | Air, Oil, Hot bath 500-550°C |
Tempering | 300-600 | 1 hour for every 20 mm | Air |
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