H12MF (H6VF, H12F1, H12VM)

Steel is not used for welded structures, prone to temper embrittlement. Temperature of critical points: Ac1 = 810, Ac3 (Acm) = 860, Ar3 (Arcm) = 780, Ar1 = 760, Mn = 225. Hardness after annealing (GOST 5950−2000): HB 10 -1 = 255 MPa. Substitutes: H6VF, H12F1, X12VM .

profiling rollers of complex shapes, sections of body punches complex shapes, intricate dyroproshivnye matrix for forming the sheet metal, the reference gear, rolling dies, dies, dies and punches punching perforated stamps with a complex configuration of the working parts, forming an active part of the electrical machine.

Classification

Country Section Category
CIS, Russia, Ukraine Tool steel Die tool steel

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Cu, % Ni, % V, % P, % C, % S, % Mo, %
GOST 5950-73 83.34–86.75 0.1–0.4 0.15–0.45 11–12.5 < 0.3 < 0.4 0.15–0.3 < 0.03 1.45–1.65 < 0.03 0.4–0.6

Information on suppliers

Technological Properties

Weldability Propensity to temper brittleness
Not applicable for welded structures inclined

Critical point temperatures

Ac1, K Ac3(Acm), K Ar3(Arcm), K Ar1, K Mn, K
810 860 780 760 225

Analogues

USA Germany Japan France United Kingdom European Union Italy Spain Sweden Bulgaria Hungary Poland Czech Republic
T30402 1.2601 (X165CrMoV12) SKD11 X160CrMoV12 BD2 X160CrMoV12-1 X160CrMoV12-1 X160CrMoV12 2310 Ch12MF K8 NC11LV 19572

Standards

Standard Description
GOST 5950-73

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Cu % Copper
Ni % Nickel
V % Vanadium
P % Phosphorus
C % Carbon
S % Sulfur
Mo % Molybdenum

Designation of types of weldability

Parameter Units of measurement Description
no limits Welding is performed without heating and without subsequent heat treatment
Boundedly welded Welding is possible with heating up to 100–120 °C and subsequent heat treatment
Difficult to weld For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing
Not applicable for welded structures

Description of temperatures of critical points

Parameter Units of measurement Description
Ac1 K
Ac3(Acm) K
Ar3(Arcm) K
Ar1 K
Mn K