By visiting this site, you accept the use of cookies. More about our cookie policy.

Steel 4Х5МФ1С

4X5MF1S steel

4X5MF1S steel: steel and alloys classifier. Below is systematized information on the purpose, chemical composition, types of supply, substitutes, critical point temperatures, physical, mechanical, technological and foundry properties for the grade — Steel 4X5MF1S.

General information about 4X5MF1S steel

Delivery type
Sections, including shaped: GOST 5950−73, GOST 2590−71, GOST 2591−71. Calibrated bar GOST 5950−73, GOST 7417−75, GOST 8559−75, GOST 8560−78. Grinded rod and silversilver GOST 5950−73, GOST 14955−77. Strip GOST 4405−75. Forgings and forged blanks GOST 5950−74, GOST 1133−71, GOST 7831−78.
Application
Molds of die casting of zinc, aluminum and magnesium alloys, hammer and press inserts (up to 200−250 mm) for hot deformation of structural steel, tools for upsetting blanks of alloyed structural and heat-resistant materials on the horizontal forging machines.

Chemical composition of steel 4Х5МФ1С

Chemical element %
Vanadium (V) 0.80−1.10
Silicon (Si) 0.90−1.20
Manganese (Mn) 0.20−0.50
Copper (Cu), not more than 0.30
Molybdenum (Mo) 1.20−1.50
Nickel (Ni), not more than 0.35
Sulfur (S), max. 0.030
Carbon (C) 0.37−0.44
Phosphorus (P), not more than 0.030
Chrome (Cr) 4.50−5.50

Mechanical properties of 4X5MF1S steel

Mechanical properties depending on tempering temperature

t tempering temperature, °C σ0, 2, MPa σB, MPa δ5, % ψ, % KCU, J/m2 HRCe
Hardening at 1020 °C in oil. Tempering temperature 2 h.
300 1490 1860 9 28 49 52
400     8 24 41 54
500 1490   8 25 20 55
600 1470 1620 10 46 44 50

Mechanical properties depending on test temperature

t test temperature,°C σ0, 2, MPa σB, MPa δ5, % ψ, % KCU, J/m2
1020 °C, Malso. Tempering 580 °C, 2h.
20 1470 1670 10 40 39
200 1340 1620 11 48 54
300 1320 1490 11 46 51
400 1270 1420 11 46 49
500 1170 1320 11 46 41

Technological properties of steel 4Х5МФ1С

Forging temperature
Beginning 1180, the end 850. Slow cooling in the wells.

Steel 4Х5МФ1С critical point temperature

Critical point °С
Ac1 875
Ac3 935
Ar3 815
Ar1 760
Mn 305

Steel hardness 4Х5МФ1С

Delivery condition, heat treatment regime HRCэ surface HB
Ruts and strips annealed or high-temperatured   241
Sample. Hardening 1020−1040 C, oil. Tempering at 550 C. St. 48  
Isothermal annealing. Heating at a rate of no more than 100 deg/h to a temperature of 860−880 С, holding for 2.5 hours + (1.0−1.5) min at 1 mm of the largest cross section, cooling withHeating at a speed of 40−50 deg/h to 720−730°С, isothermal holding for 3−4 hours, cooling at a speed of 30−50 deg/h to 400 °C.   241
High tempering. Heating at a rate of no more than 100 deg/h to a temperature of 750−780 C, holding for 2.5 h + (1.0−1.5) min at 1 mm of the largest cross-section. Cooling at a rate of 30−50 deg/h to 400 C.   269
Heating at a rate of 700−750 C. Tempering at 1020−1040 С, oil. Tempering 560−580 C. Tempering 520−540 C. 49−50  

Physical properties of 4X5MF1S steel

Temperature of test, °C 20 100 200 300 400 500 600 700 800 900
Modulus of normal elasticity, E, GPa 207     187     160      
Steel density, pn, kg/m3 7716 7692 7660 7627 7593 7559 7523 7490 7459 7438
Thermal conductivity coefficient W/(m — °C) 22 25 27 29 30 31 31 31 31 32
Electrical resistivity (p, nominal value — m) 553 591 649 715 798 879 970 1077 1189 1229

Heat resistance, red resistance of steel 4Х5МФ1С

Heat resistance

Temperature, °C Time, h Hardness, HRCэ
600 2 47