When Should You Use Hardened Steel for Your Injection Mold?

Choosing the right mold material is critical for long-term production success. At Dongxinda, we guide clients through material selection based on their project’s volume, part design, and resin type.

When Hardened Steel Is Recommended:

• You expect over 500,000 or 1,000,000 cycles

• You’re using abrasive materials like glass-filled nylon

• Tight tolerances or high pressures are required

• Minimal maintenance and long service life are essential

We commonly use H13, S136, and 1.2344 hardened tool steels for durable, high-output molds that operate with stability over years.

FAQs:

• Can hardened steel molds be repaired?
  Yes, though repairs must be done carefully with compatible materials.

• Is steel better than aluminum for long-term use?
  Yes—steel is more durable but also takes longer and costs more upfront.

• Do you offer surface treatments for extended steel mold life?
  Absolutely. Nitriding, polishing, and PVD coatings are available as needed.