Tool steel X12MF

X12MF

tool steel

X12F1, X12VM, X6VF

Instrumental stamping steel X12MF is used for the manufacture of products of complex shapes with high toughness and mechanical strength - for the manufacture of profiling rollers of complex shapes, sections of body dies of complex shapes, complex piercing dies in sheet metal moulding, reference gears, rolling dies, rollers, dies and punches of punching dies with a complex configuration of working parts, stamping of the active part of electrical machines.

Steel is widely used for the production of various components of automotive engines, such as pistons, valves, etc.

The performance of the material ensures reliability and durability of these parts and in turn extends the overhaul-free period of the power unit.

Steel is used for the production of critical parts and components for aircraft, missiles and other flying machines. This is due to its corrosion resistance, heat resistance and strength.

Steel is also used to manufacture tools and equipment that work in the oil and gas industry such as drill rigs, pumps, valves and other components.

The ability to be used in this industry is determined by its corrosion resistance as well as its stability under high temperature and pressure conditions.

Long products and chemical composition: GOST 2590-2006,GOST 5950-75,

Sheets and strips: GOST 103-2006, GOST 4405-75.

Forgings, forged steel: TU 14-1-1530-75, 1133-71

Supplied: any rolled products, bars - calibrated and ground, circles, strips, sheets and plates, billets, slabs, forged billets and forgings.

Mass fraction of elements, %:

Carbon (C) - 1.45-1.65 ; Silicon (Si) - 0.1-0.4 ; Manganese (Mn) - 0.15-0.45 ; Nickel (Ni) - ≤ 0.35 ; Sulphur (S) - ≤0.03 ; Phosphorus (P) - ≤0. 03 ; Molybdenum (Mo) - 0.04-0.6 ; Copper (Cu) - ≤0.03 ; Tungsten (W) - ≤0.197 ; Vannadium (V) - 0.15-0.3 ; Chromium (Cr) - 11-12.5 ; Iron (Fe)- the rest.

X12MF steel is characterised by a high degree of processability.

It can be processed by various technologies.

Steel can be processed by cutting under certain conditions.

Forging is carried out at temperatures from 1140 ° C to 850 ° C.

Cooling is necessary in thermostats or in wells.

Satisfactory degree of grinding.

To improve mechanical properties and corrosion resistance, steels are subjected to hardening heat treatment. Corrosion resistance of steels is also improved after grinding and polishing.

Beginning 1140 °C, ending 850 °C.

Cooling in wells or thermostats

Critical point temperature: Ac1 = 810 , Ac3(Acm) = 860 , Ar3(Arcm) = 780 , Ar1 = 760 , Mn = 225

Machinability by cutting: In hot rolled condition at HB 217-228 and σv=710 MPa, K υ t.c.spl=0.8 and Kυ b.st=0.3

Weldability: Not applicable for welded structures.

To obtain hardness 58-59 NRCe - Heating at 650-700 °C. Hardening at 1000-1030 °C, saltpeter. Tempering at 320-350 °C, 1.5 h, air (final heat treatment mode). To obtain hardness 61-63 NRCe - Heating at 650-700 °С. Hardening at 1000-1030 °C, oil. Tempering at 190-210 °C, 1.5 h, air (final heat treatment mode).

To obtain hardness 255 NV - Isothermal annealing: heating at 850-870 °С, cooling at a rate of 40 deg/h to 700-720 °С, holding 3-4 h, cooling at a rate of 50 deg/h to 550 °С, air.

Delivery condition - not more than 255 NV

Hardening (Tempering) - up to 63 HRCe units