Given high rigidity by advanced heat treatment, stainless steel hard plates will resist warping even after repeated use. They're used in the manufacture of multilayer printed circuit boards.
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| Intermediate plate | Jig plate |
Special features
Two types are available (high strength and high thermal expansion) depending on the intended use.
Minimal warping even when cooled and heated repeatedly.
Thicknesses of up to 10 mm available.
Uniform material with no grain.
Resists deterioration under maintenance polishing.
Standard specifications
| Item | Thickness 1 mm | Thickness 1.5 mm | Thickness 8 mm | |
|---|---|---|---|---|
| Tolerance, mm |
Thickness | +0.1, -0.1 | +0.1, -0.1 | +0.5, -0 |
| Width | +0.5, -0.5 | +0.5, -0.5 | +0.5, -0.5 | |
| Length | +0.5, -0.5 | +0.5, -0.5 | +0.5, -0.5 | |
| Flatness | 0.03 or less | 0.03 or less | 0.03 or less | |
| Warping | 0.5 or less | 0.5 or less | 0.2 or less | |
| Difference between diagonal lines | 1 or less | 1 or less | 1 or less | |
| Pin hole diameter | +0.1, -0 | +0.1, -0 | +0.015, -0.010 | |
| Pin hole interval | +0.03, -0.03 | +0.03, -0.03 | +0.03, -0.03 | |
| Chamfer | Light chamfering | Light chamfering | 0.5C | |
| Corner | 2R | 2R | 2R | |
| Hardness (HRC) | 46 or more | 46 or more | 46 or more | |
Surface finishing
| Finish | RZJIS (μm) ten-point average roughness |
|---|---|
| No.6 No.8 #600 buff |
1 - 2 Up to 1 Up to 1 |
Available manufacturing range
| Type | High strength | High thermal expansion | |||
|---|---|---|---|---|---|
| Steel grade | SUS420J2 | TPP 16 | TPP 18 | TPP SH | |
| Hardness (HRC) | 46 or more | 46 or more | 46 or more | 49 or more | |
| Thermal expansion coefficient (1/°C) | 11 x 10-6 | 15 x 10-6 | 17 x 10-6 | 15 x 10-6 | |
| Thermal conductivity (Kcal/mh°C) | 21 | 14 | 14 | 14 | |
| Available manufacturing range |
Thickness, mm | 5 - 10 | 1 - 2.0 | 1 - 2.0 | 1 - 2.0 |
| Width, mm | 680 or less | 1,100 or less | 1,100 or less | 1,100 or less | |
| Length, mm | 720 or less | 1,500 or less | 1,500 or less | 1,500 or less | |
Special features
A leading multilayer plate manufacturer
Takasago's original flattening heat treatment furnace makes the most of these superb features.
Intermediate plates
Good shape
High quality (shape and thickness) plates are given further flattening heat treatment to produce this unrivaled geometry.
Minimal warping after long use
The plates have already been treated at higher temperatures than normal use and are highly resistant to warping, even after repeated use.
Scratch resistant hardness
Heat treatment achieves hardness of HRC460 (HV460) or more. We've also developed TPP-SH (super hard) with a hardness of HRC 49 (HV 500).
| Manufacturer | Takasago | Company A | Company B | Company C | ||||
|---|---|---|---|---|---|---|---|---|
| Steel grade | TPP16 TPP18 |
TPP-SH | T301 | T630 | T301 | PH steel | 2 phase steel | T301 |
| Hardness (HV) | 460< | 500< | 330< | 430< | 300< | 430< | 380< | 400< |
We offer products for applications sensitive to thermal expansion.
| Product | TPP16 | TPP18 | 420J2 |
|---|---|---|---|
| Thermal expansion coefficient (1/°C) | 15 x 10-6 | 17 x 10-6 | 11 x 10-6 |
*The figures given above are not guaranteed values.
TPP18 features the same thermal expansion coefficient as copper foil and is widely used to prevent wrinkling and tearing in copper foils.
Jig plates
Deformation resistant jig plates
SUS420J2 is tempered and quenched to produce high strength jig plates.
Superior wear resistance
Wear resistance of HRC46 (HV460) or greater.
Exceptional dimensional accuracy
We use a special jig borer to enable dimensional control in the 10 μ range for hole size and hole pitch.
Related products
Carrier plates
Racks
Guide pins
Bushes
Used in high volumes, these products enjoy an excellent reputation among large printed circuit board manufacturers.