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Tool Steel SKD11/SLD/ DC11 Chemical Properties

Cold Work Tool Steel
JIS SKD 11 or Equivalent

Characteristic

SKD11 are called die steels, trade name SLD (the latest improved version called SLD-MAGIC). SKD11 also called DC11 or SLD high wear-resistant chromium cold work tool steel or JIS SKD11 G4404 / AISI D2.
SKD11 obtained by adding Cr, Mo, and V to SK materials. The material SKD11 is used very frequently in press molds. These materials can also be said to be the mainstream materials for punches and dies. These materials are used in the molds for medium to large production volumes. The deformation due to heat treatment is still smaller than the SKS materials. The deformation is small during wire cutting electric discharge machining, and ease of machining is also a reason why these materials have become the mainstream materials for molds. Since the deformation during wire cutting electric discharge machining is still smaller when high temperature tempering is done (at about 500 to 550 ℃) rather than the normal tempering (about 180 to 200 ℃), high temperature tempering has come to be used more often. However, since the hardness decreases (to about 58HRC), there was also the drawback that the tool life becomes poor. Manufacturers of steel materials are developing materials in which a hardness of 60HRC can be maintained even after high temperature tempering. However, since the heat treatment conditions of these materials have changed finely, unless care is taken, the expected heat treatment characteristics may not be obtained.

Equivalent
Thyssenkrupp 2379, AISI D2, DIN X155CrVMo121, ASSAB XW41/42, Bohler K110 KNL extra, Daido DC11, Buderus 2379, Hitachi SLD, Koshuha KD11V, Rochling RCC SUPRA

Availability
Roundbar: 10mm - 205mm
Aquare: 10mm - 100mm


Chemical Composition
CSiMnPSMoCrV
1.500.250.450.0250.011.0012.000.35


Hardness
Soft annealing to about HB210 (Soft Annealed Approximately HB210)

Advantages:
  • Was vacuum degassing refining, so the quality is very clean inside
  • Machining of good
  • Hardenability, good air cooling can be hardened without fear of quenching crack
  • Heat treatment deformation is very small, very small quenching deviation, the most suitable for precision mold
  • Very good wear resistance, the most suitable for stainless steel or high Die Hard Materials
  • Good toughness.

Applications
This steel is easy turning, and should be made sharp knife, scissors, saw, cold or hot for repair mode, the drum side, the screw pattern, line mode, cutters, impact mode, circular cylinder, the system of power transformers heart dies, cutting steel Paper mill knives, steel forming rollers, special molding roller, precision rules, shape complexity of the cold tools, mandrels, metallurgy, tin for mold, plastic mold, the screw head molds.

Related Steel:

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