Tool steel plate grade

P20 Precision Tool Steel Plates

Order P20 tool steel plates and blocks to finished blank dimensions, with two ground reference faces or six milled faces. The P20 designation, material condition and directional tolerances are confirmed before machining.

Select the work to be supplied

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.

P20 Two-Side Ground + Four-Side Milled Plates — model schematic
Model schematic · illustrative geometry
LCD-PL-P20-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.

Full finishing specification →Request this option
P20 Six-Side Precision Milled Plates — model schematic
Model schematic · illustrative geometry
LCD-PL-P20-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

P20 is outside the published E1 grade list. The listed G2 and M6 options retain their own tolerances. Send a different grinding scope or tighter requirement for separate technical 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

  • Identify whether your P20 drawing calls for annealed, pre-hardened or another agreed condition; include the required hardness and supporting report.
  • Separate the finished blank dimensions from cavity features or machining allowance that your toolroom will add later.
  • Use the published P20 G2 or M6 specification as the starting point. A tighter requirement needs its own technical review.

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

Prepare a P20 plate inquiry

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.

P20 Tool Steel Plate Questions

Start with your drawing.

Tell us the material, finish and requirements for your next project.

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