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Tool steel plate grade

NAK80 Precision Tool Steel Plates

NAK80 plates and blocks are prepared to an agreed grade, condition and face-finishing specification. Pre-hardened NAK80 is included in the eligible E1 range; milling and two-side grinding remain separate finishing choices.

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Machined tool steel blocks in different sizes on a worktable
Machined blocks in different sizes

Product-form example. Grade, material condition and supplied configuration follow the approved order.

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Grinding and Milling Options

Each catalog reference carries its selected scope into the quotation form. Finished dimensions, material records and acceptance follow the approved order.

NAK80 Two-Side Ground + Four-Side Milled Plates — model schematic
Model schematic · illustrative geometry
LCD-PL-NAK80-G2

Two-side ground + four-side milled

Precision grinding on two reference faces, with the four remaining faces milled. Thickness and length/width have separate tolerances.

Length / width
±0.10 mm
Thickness
±0.05 mm
Parallelism
0.04 mm / 100 mm between the ground reference faces
Material condition
Confirm the material condition for the order
Size scope
Maximum processing: 1200×800×400 mm; process review required

Finish dimensions and material condition are agreed for the selected grade. Large plates and additional geometric requirements need drawing-specific review.

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NAK80 E1 Six-Side Precision Ground Plates — model schematic
Model schematic · illustrative geometry
LCD-PL-NAK80-E1

E1 six-side precision ground

All six faces precision ground under the published E1 grade, condition and size limits.

Length / width
±0.02 mm
Thickness
±0.02 mm
Parallelism
0.02 mm / 100 mm
Material condition
Pre-hardened
Size scope
L and W each ≤600 mm; T 10–200 mm

Pre-hardened NAK80 blocks within the E1 envelope: length and width each ≤600 mm; thickness 10–200 mm.

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NAK80 Six-Side Precision Milled Plates — model schematic
Model schematic · illustrative geometry
LCD-PL-NAK80-M6

Six-side precision milled

All six faces precision milled to the agreed finished dimensions. Use the drawing to identify any additional grinding requirements.

Length / width
±0.10 mm
Thickness
±0.10 mm
Parallelism
0.08 mm / 100 mm
Material condition
Confirm the material condition for the order
Size scope
Maximum processing: 1200×800×400 mm; process review required

Finish dimensions and material condition are agreed for the selected grade. Large plates and additional geometric requirements need drawing-specific review.

Full finishing specification →Request this option
Grade and condition limits

E1 for NAK80 requires pre-hardened condition, length and width each ≤600 mm, and thickness 10–200 mm. The three dimensional tolerances are ±0.02 mm; parallelism is 0.02 mm per 100 mm. Larger sizes, annealed material or additional requirements need separate review.

Grade designations are listed separately; no automatic equivalence or substitution is assumed. Per-100-mm parallelism does not define whole-plate flatness or surface roughness.

Drawing and Quotation Checklist

  • Confirm pre-hardened condition and finished dimensions when asking for an E1 NAK80 block.
  • Put any surface-roughness requirement on the drawing; a dimensional tolerance does not define Ra or a polished cavity surface.
  • Define any remaining cavity/core machining so the quotation covers the required blank preparation.

Include quantity, drawing revision, required inspection documents and delivery destination. Single-piece and small-batch inquiries are accepted.

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Inspection and Production Planning

MTC material documentation, hardness and dimensional inspection reports can be requested. UT reports are available on request with an agreed scope. Regular plate sizes range from 100×100×20 to 800×600×300 mm; maximum processing size is 1200×800×400 mm, subject to grade, condition and finish review. This maximum does not carry the E1 tolerance.

Typical production: 3–7 working days. Working days exclude weekends and statutory public holidays in China. The clock starts on the next working day after formal PO receipt, final drawing/specification approval and applicable deposit receipt are all completed. Transport time is separate.

Inspection and documentation →Compare plate finishing routes →View product photographs →

NAK80 Tool Steel Plate Questions

Does a precision-ground NAK80 block include cavity polishing?

The plate finishing specification concerns the agreed blank faces and dimensions. Cavity machining, polishing and any surface requirement must be identified separately; grinding does not automatically define a polished cavity.

Can pre-hardened NAK80 use E1 six-side grinding?

Yes, within the published scope: length/width each ≤600 mm and thickness 10–200 mm. E1 dimensional tolerance is ±0.02 mm in all three directions, with parallelism 0.02 mm per 100 mm.

How do I specify NAK80 plates for further machining?

State finished blank dimensions, the faces to be ground, material condition and remaining machining allowance. Identify additional geometric or roughness requirements separately.

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