Moldsteells – Premium Mold Steel Custom Manufacturer

Engineered for Excellence

Moldsteells is a leading manufacturer and supplier of high-precision mold steel materials, serving industries ranging from automotive and electronics to medical devices and consumer goods. With decades of experience, we specialize in delivering consistent, high-quality steel tailored to your exact specifications.

Our commitment to innovation and quality control ensures every product meets international standards. Whether you need standard grades or custom solutions, we provide reliable materials that enhance mold longevity, surface finish, and production efficiency.

ISO-Certified Manufacturing
100% Ultrasonic Testing Available
Custom Cutting & Machining
Global Shipping & Support

Our Premium Mold Steel Grades

Explore our comprehensive range of high-performance mold steels, each engineered for specific applications and manufacturing demands.

NAK80 Mold Steel

Pre-hardened mirror-grade steel ideal for plastic injection molds requiring high polishability and dimensional stability.

Hardness: 37-41 HRC
Excellent machinability
Low distortion after EDM
High resistance to aging

718H Mold Steel

High-hardness pre-hardened steel with excellent toughness and polishability for large mold bases and cores.

Hardness: 33-38 HRC
Good through-hardening
High wear resistance
Uniform structure

S136H Mold Steel

Stainless mold steel with superior corrosion resistance for molds exposed to corrosive plastics or moisture.

Hardness: 48-52 HRC
Excellent polishability
High resistance to rust
Good thermal conductivity

H13 Mold Steel

Hot work tool steel designed for die casting molds subjected to high thermal fatigue and mechanical stress.

Hardness: 48-52 HRC
Excellent heat resistance
High toughness
Good thermal fatigue resistance

P20 Mold Steel

General-purpose pre-hardened steel widely used in plastic injection molds for cost-effective performance.

Hardness: 28-32 HRC
Good machinability
Uniform hardness
Weldable and polishable

8407 Mold Steel

High-performance hot work steel with excellent thermal fatigue resistance for aluminum and zinc die casting.

Hardness: 48-52 HRC
High toughness
Good dimensional stability
Superior surface finish

DC53 Mold Steel

Advanced cold work steel offering higher toughness and wear resistance than SKD11 for stamping and forming dies.

Hardness: 58-62 HRC
Excellent wear resistance
High compressive strength
Good dimensional stability

SKD11 Mold Steel

High-carbon, high-chromium cold work steel ideal for blanking, forming, and trimming dies.

Hardness: 58-60 HRC
Excellent wear resistance
Good hardenability
Stable during heat treatment

Cr12MoV Mold Steel

High-carbon, high-chromium tool steel with excellent wear resistance for cold forming and stamping dies.

Hardness: 58-60 HRC
High compressive strength
Good dimensional stability
Deep hardening

SKH-51 High-Speed Steel

Tungsten-molybdenum high-speed steel for cutting tools requiring high red hardness and wear resistance.

Hardness: 63-66 HRC
Excellent heat resistance
High wear resistance
Good toughness

1.2311 Mold Steel

German standard pre-hardened steel with excellent machinability and polishability for plastic molds.

Hardness: 29-33 HRC
Good dimensional stability
High purity
Uniform structure

S50C Mold Steel

Medium carbon steel used for low-cost mold bases, fixtures, and general engineering applications.

Hardness: 20-25 HRC
Good weldability
Easy to machine
Cost-effective solution

Advanced Manufacturing Capabilities

From raw material sourcing to final inspection, our integrated production system ensures consistent quality and on-time delivery.

Massive Inventory

Extensive stock of all major grades in various sizes and thicknesses for fast delivery.

Custom Cutting

Precision sawing and CNC cutting to your exact dimensions and tolerances.

100% Quality Testing

Ultrasonic testing, hardness verification, and chemical analysis available.

Global Shipping

Reliable logistics network with fast turnaround and full documentation.

Frequently Asked Questions

What is the difference between NAK80 and S136H mold steel?

NAK80 is a pre-hardened, non-stainless steel with excellent polishability and dimensional stability, ideal for high-gloss plastic molds. S136H is a stainless steel with superior corrosion resistance, making it suitable for molds exposed to corrosive plastics or moisture.

Do you offer custom cutting services?

Yes, we provide precision cutting to your exact specifications using advanced sawing and CNC equipment. We can cut plates, blocks, and rounds to your required dimensions with tight tolerances.

Is ultrasonic testing available for mold steel?

Yes, we offer 100% ultrasonic testing upon request to detect internal defects such as porosity, inclusions, or cracks, ensuring the highest material integrity for critical applications.

What certifications do you provide?

We provide material test certificates (MTC) with every shipment, including chemical composition and mechanical properties. Additional certifications can be provided based on customer requirements.

How do I verify genuine NAK80 steel?

Genuine NAK80 should have consistent hardness (37-41 HRC), proper chemical composition (Ni, Al, Cu), and be free of internal defects. Always request a mill test certificate and consider third-party verification for critical projects.

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Precision Mold Steel for Demanding Applications