Standards

DIN

AISI

JIS

ГОСТ

X40CrMoV51

1.2344

H13

SKD61

4Х5МФ1С

C

Si

Mn

P

S

Cr

Mo

V

0.37-0.42

0.90-1.20

0.30-0.50

≤0.030

≤0.030

4.80-5.50

1.20-1.50

0.80-1.15

Steel properties :

Chrome–molybdenum–vanadium-silicon steel for hardening in oil and in air with very good hardenability (the steel is hardened in the whole cross-section up to the diameter of about 150 mm), high firmness during the heat and resistance to the tempering and the wear (higher than by the steel 1.2343), very good toughness and plastic properties during normal and also higher temperatures. Further the steel has a very good resistance to tearing of thermal fatigue (lower than by the steel 1.2343) and higher sensitivity to quick changes of temperature than by the steel 1.2343. The steel is suitable for the heat treatment also for firmness over 1765 N/mm2 and for tools cooled by water. It is well-workable during the heat and well-workable in the soft-annealed state.

Applications :

Casting dies for aluminum, magnesium and zinc, extrusion dies and adaptor ring, hot stamping and press forge dies, Shear blades for hot work and hot swaging dies. Firm and movable parts meeting the liquid metal, inserts of functional parts of core molds, inlet cases, slide-valves, dividers etc.The steel can also be used for tools for hot cutting, small and middle-sized shear blades, trimming dies and cutting thorns.

Size range :

Diameter (mm)

Thickness (mm)

Width (mm)

6 - 500

6 - 400

Max 810

Delivery condition :

Soft annealed to max. 229 HB

Soft annealing

Temperature(°C)

Cooling

Hardness

750 - 780

furnace

max. 229 HB

Forging

Temperature(°C)

Cooling

900 - 1100

furnace

Hardening

Temperature(°C)

Cooling

Tempering

1010 - 1030

oil or air

see tempering diagram