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What materials are used to make molds?

2026-01-25 09:57:31 mechanical

What materials are used to make molds?

Mold manufacturing is an important link in industrial production. Choosing appropriate mold materials directly affects the service life, processing accuracy and production efficiency of the mold. This article will combine the hot topics and hot content on the Internet in the past 10 days, introduce the types, characteristics and application scenarios of mold materials in detail, and present key information in structured data.

1. Classification and characteristics of common mold materials

What materials are used to make molds?

The selection of mold materials requires comprehensive consideration of factors such as hardness, wear resistance, corrosion resistance, and thermal stability. The following is a comparative analysis of mainstream mold materials:

Material typeRepresentative brandHardness(HRC)Main featuresTypical applications
tool steelCr12MoV, SKD1158-62High wear resistance and easy to processStamping mold, injection mold
high speed steelW6Mo5Cr4V263-67Red and hardPrecision cutting mold
CarbideYG8, YT1585-92Ultra high hardnessDrawing die, cold heading die
Aluminum alloy7075, 606115-20LightweightLow pressure injection mold

2. Recent hot material technology progress

According to industry trends in the past 10 days, the following new materials and technologies have received widespread attention:

1.3D printing mold steel: The Ultraform® 3D printing special steel powder launched by BASF in Germany can realize the integrated molding of complex cooling water channels and shorten the mold delivery cycle by more than 40%.

2.Nano coating technology: The TiAlN nano-coating developed by Japanese companies can increase the life of the mold by 3-5 times, and is especially suitable for high-strength plate stamping scenarios.

3.Environmentally friendly alternative materials: The green mold steel newly developed by Swedish Uddeholm company reduces carbon emissions by 30% during the production process, making it a new favorite in the supply chain of European car companies.

3. Core considerations in material selection

Consideration dimensionskey indicatorssolution
cost controlMaterial unit price/life ratioMedium carbon steel + surface strengthening
Production efficiencythermal conductivityBeryllium copper alloy inserts
Product accuracythermal expansion coefficientInvar alloy

4. Industry application cases

1.Automobile panel mold: Tesla’s Shanghai factory uses SKD61 hot work die steel and cooperates with an intelligent temperature control system to achieve a production cycle of 6 pieces per minute.

2.Precision mold for electronic products: Apple supply chain companies use S136 stainless steel mirror steel with a surface roughness of up to Ra0.01μm, which meets the high-gloss requirements of mobile phone casings.

3.Medical consumable mold: Johnson & Johnson Medical uses cobalt-chromium alloy to manufacture minimally invasive surgical instrument molds to ensure dimensional stability after millions of injection moldings.

5. Future development trends

1. Intelligent materials: "Self-sensing" mold steel embedded with sensors can monitor wear status in real time

2. Composite design: gradient materials (such as steel-copper composite) to achieve customized performance of different parts

3. Sustainable materials: Biodegradable mold materials have begun pilot applications in the packaging industry

In summary, mold material selection requires comprehensive judgment based on specific application scenarios, cost budgets and technical requirements. With the rapid development of new material technology, mold manufacturing is continuing to evolve towards high performance, intelligence, and environmental protection.

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