Low heat hot work die steel with high toughness

Low heat high toughness is mainly used for hot work die steel to withstand great impact on the processing load of hot forging die, requiring good impact toughness, high hardenability, good thermal conductivity, higher thermal fatigue resistance, so the mold can The work of about 400 ℃ under thermal shock conditions of the poor working conditions, the mass fraction of carbon steel, 0.30% to 0.50%, which is sub-eutectoid steel.

High toughness and low heat-resistant low-alloy steel elements in the total mass fraction of 5% or less, containing mainly Cr, Ni, Mn, Mo, Si, V and other alloying elements, including Cr-Mn, Cr-Ni can increase the hardenability for joining the Of, and strengthen the role of tempering resistance can be improved by adding Mo to prevent temper brittleness; adding V to grain refinement; adding Mo, V can form carbides, improve wear resistance.

In performance, low-heat hot work die steel with high toughness, hardenability high, a certain resistance to tempering and high temperature strength, to heat in the 400 ~ 500 ℃, but compared to other hot work die steel, heat Performance is low. Low heat hot work die steel with high toughness, high impact toughness and fatigue strength, a high-toughness steel, and also has good heat resistance, oxidation resistance, and processing technology.

Die forging generally use low-heat-resistant steel with high toughness.

Low heat high toughness steel hot die steel grades: 3Cr2MoWVNi, 5Cr2NiMoVSi), 45Cr2NiMoVSi), 5SiMnMoV, 4CrMnSiMoV, 5CrNiMo, 5CrMnMo and so on.

Imports of the same series of hot work die steel grades:
Japan DAIDO STEEL: GFA, GF4, GF78, DH76, DH31-S, DH31-EX, DHA-WORLD, etc.;
Sweden Uddeholm Tooling: ALVAR 14, ORVAR 2M, VIDAR SUPERIOR, DIEVAR, etc.;
HITACHI METALS Tool Steel: DM (JIS SKT4), YHD28, YHD3, etc.;
Germany Groditz die steel: 1.2714 (56NiCrMoV), W.1.2343 and so on.