Introduction to DC53 | Cr8Mn2SiV | K340
DC53 equivalents: AISI A2 (US), JIS SKD11 – improved (Japan), GB Cr8Mo2SiV (China), BS BD2 – enhanced (UK), NF Z200CrMoV5 – 1 (France), UNI X100CrMoV5 – 1 (Italy), ISO 4957/X100CrMoV5.
Differences from 1.2601: DC53 has better toughness and higher impact strength after quenching and tempering. 1.2601 offers good wear – resistance and is air – hardening. DC53 is more suitable for applications with high – impact loads, while 1.2601 fits well for general cold – work tooling.
- Wear Resistance: Very high due to fine carbides from high chromium and vanadium content.
- Toughness: Significantly improved compared to standard SKD11 (due to reduced carbon and optimized heat treatment), making it suitable for impact-loaded applications.
- Red Hardness: Moderate (suitable for room-temperature to low-heat applications).
- Machinability: Better than high-carbon grades when annealed; requires careful heat treatment.
- Corrosion Resistance: Good for a non-stainless tool steel (high chromium content).
- Wear Resistance: Moderate (adequate for non-abrasive materials due to chromium and vanadium carbides).
- Toughness: Higher than high-chromium steels like D2, thanks to lower carbon and manganese for improved hardenability.
- Red Hardness: Low (not suitable for high-temperature use).
- Machinability: Relatively easy to machine in the annealed state.
- Heat Treatment: Oil-hardening, offering good dimensional stability.
- Wear Resistance: Exceptional (one of the highest among cold-work steels due to dense carbide distribution).
- Toughness: Moderate (higher than traditional D2 grades due to optimized carbide size and distribution).
- Red Hardness: Low to moderate (best suited for room-temperature applications).
- Machinability: Difficult when hardened; requires EDM or grinding for finish machining.
- Corrosion Resistance: High due to high chromium content (similar to D2).
It is widely used in manufacturing dies and tools for demanding cold-forming processes. It excels in applications like blanking, cold forging, and deep drawing due to its high hardness and wear resistance. Common uses include punches, forming rolls, and precision stamping dies for wire cutting. This steel also works well in cold extrusion and rolling operations, where it withstands heavy loads and maintains dimensional stability. Its toughness makes it ideal for cutting tools in high-speed punching and forming difficult materials like stainless steel or titanium.
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