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NAK80 Pre-Hardened Mirror Polishing Mold Steel Plate | 6-Face Milled 40 HRC Precision Stock – KUTU

Steel Grade / Brand

NAK80 (Daido Standard Precipitation Hardened Steel)

Primary Applications

Precision plastic molds, clear electronic housing molds, high-gloss finish parts

Stock Status

In Stock (Pre-hardened Plates & Blocks)

Thickness / Size Range

10mm – 300mm+ (Custom block sawing)

Machining Capabilities

Sawing, 6-side milling, precision grinding, EDM prep

Min. Order Quantity (MOQ)

1 Custom Cut Block (Standard Rate), 500 kg+ (Wholesale Rate)

Lead Time

Stock Cut: 1–2 Days; Precision Machined: 3–4 Days

Delivery Condition & Hardness

Age-Hardened / Pre-hardened (37–41 HRC, no heat treat needed)

Tolerance & Finish

Sawing: -0/+1mm; Milling/Grinding: ±0.01mm

Key Composition

Ni-Al-Cu precipitation hardening alloy (C: ~0.15%, Ni: ~3.0%, Cu: ~1.0%, Al: ~1.0%)

Age-Hardened NAK80 (37–43 HRC) Precision Machined Plastic Mold Steel Plate Pre-hardened high-performance plastic mold steel supplied ready for direct CNC machining without additional heat treatment. Delivered 6-face pre-milled with uniform hardness. Key Advantages & Capabilities

  • No Heat Treatment Needed: Eliminates risk of quench distortion.

  • 6-Face Milled Stock: Squared and cleaned for immediate CNC setups.

  • Uniform Hardness: Consistent 37–43 HRC from surface to core. 💡 Optional On-Demand Machining & Wire-EDM Services

  • 5-Axis Milling: High-speed pre-milling for electronic component cavities.

  • EDM Electrode Machining: Precision spark-erosion preparation.

  • Custom Slicing: Saw cutting to exact target block dimensions. Technical Specifications

  • Grades: NAK80 (Pre-Hardened Plastic Steel)

  • Condition: Pre-Hardened (37–43 HRC) | 6-Face Milled

  • Applications: Electronic component molds, clear plastic housings, automotive interiors.

  • 📩 Upload your CAD drawings or dimensional requirements for a 2-hour quote.

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A:Absolutely. Beyond supplying raw materials, we provide full custom precision machining services. This includes CNC milling, grinding, surface flattening, and custom vacuum heat treatment tailored to your exact blueprints. We deliver near-net-shape blocks to save your production time.

A:Yes, our facility is equipped with heavy-duty CNC milling machines, high-precision grinding machines, and automated sawing systems. We supply not only raw tool steel plates but also fully machined mold bases and custom-sized steel blocks according to your industrial specifications.

A: Our comprehensive service covers everything from steel grade selection consulting to custom cutting, precision machining, and full internal ultrasonic testing (SEP 1921-84). This ensures global toolmakers receive ready-to-use materials with guaranteed quality.

A: Yes, absolutely. We understand that tool and mold steel reliability is critical to your tooling life and production stability. We provide free material samples (standard test blocks or small discs) for metallurgical analysis, chemical composition testing, and hardness verification. You can place a sample request via our chat or contact forms.

A: While the steel material itself is 100% free, international express freight (via DHL, FedEx, or UPS) is typically covered by the buyer. You can provide your courier account number for freight collect. Our Premium Policy: The exact shipping cost you paid for the sample will be 100% credited back and deducted from your first bulk trial order invoice, making the entire sample process completely risk-free for you.

Steel Grade / Brand

NAK80 (Daido Standard Precipitation Hardened Steel)

Primary Applications

Precision plastic molds, clear electronic housing molds, high-gloss finish parts

Stock Status

In Stock (Pre-hardened Plates & Blocks)

Thickness / Size Range

10mm – 300mm+ (Custom block sawing)

Machining Capabilities

Sawing, 6-side milling, precision grinding, EDM prep

Min. Order Quantity (MOQ)

1 Custom Cut Block (Standard Rate), 500 kg+ (Wholesale Rate)

Lead Time

Stock Cut: 1–2 Days; Precision Machined: 3–4 Days

Delivery Condition & Hardness

Age-Hardened / Pre-hardened (37–41 HRC, no heat treat needed)

Tolerance & Finish

Sawing: -0/+1mm; Milling/Grinding: ±0.01mm

Key Composition

Ni-Al-Cu precipitation hardening alloy (C: ~0.15%, Ni: ~3.0%, Cu: ~1.0%, Al: ~1.0%)

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