PCB/CCL专用层压上盖板/承载盘-无锡伟一超合金有限公司

PCB/CCL special laminated steel plate

Our laminated steel plate is one of our high-tech products, manufactured using advanced heat treatment and grinding processes. We exercise strict control over steel selection, heat treatment, and surface finish, ensuring that our steel plates offer high hardness, high temperature and pressure resistance, and flatness without deformation after pressing. They are widely used in PCB, CCL, and other high-temperature lamination industries.

Steel type / Composition	SUS304	SUS301	SUS420	SUS630
C	≤0.08	0.05-0.15	0.16-0.25	≤0.07
Si	≤1.00	≤2.00	≤1.00	≤1.00
Mn	≤2.00	≤2.00	≤1.00	≤1.00
P	≤0.045	≤0.045	≤0.04	≤0.04
S	≤0.03	≤0.015	≤0.04	≤0.03
Cr	18.00-20.00	16.00-19.00	12.00-14.00	15.00-17.00
Ni	8.00-10.50	6.00-9.50	-	3.00-5.00
Cu	-	-	-	3.00-5.00
Nb	-	-	-	0.15-0.45
Mo	-	≤0.08	-	-

Material		Cold-rolled hardened	Cold-rolled hardened	Quenching process	Aging process
Material		SUS304 (China)	SUS301 (China)	SUS420 (China)	SUS630 (China)
Manufacturing dimensions	Thickness (mm)	1-2.0	1-2.0	1-2.0	0.5-3.2
	Width (mm)	Max.1500	Max.1300	Max.1300	Max.1500
	Length (mm)	Unlimited	Unlimited	Unlimited	Unlimited
Hardness (HRC)		≤43	≤43	50±2	48±2
Thermal expansion coefficient (10-⁶/℃)		16-17	16-17	10-12	10-12
Thermal conductivity (W/mK)		15-17	15-17	17-25	17-25
Magnetism		Weak	Weak	Strong	Strong
Yield strength (Mpa)		≥1000	≥1300	≥1300	≥1400
Tensile strength (Mpa)		≥1100	≥1400	≥1500	≥1500
Elongation (%)		≥5	≥5	≥5	≥5

Project	Metrics
Length & Width tolerance	±1mm
Diagonal tolerance	≤2mm
Thickness tolerance	±0.05mm
Flatness	≤3-5mm/m (Depending on size and thickness)
Parallelism	≤0.03-0.05mm (Depending on size and thickness)
Surface roughness	CCL: Ra≤0.07µm, Rz≤1.0µm/PCB: Ra≤0.15µm, Rz≤1.5µm

• Plate Thickness Parallelism: Difference in thickness between the two ends of the steel plate. For example, for a 1.5 mm thick plate with a thickness tolerance of ±0.05 mm, the thickness difference between the two ends of the plate should not exceed 0.03 mm.
• Plate Flatness: Place the steel plate on an inspection platform; the gap between the plate and the platform should be ≤3–5 mm/m (depending on size and thickness, see Figure 1).
• Diagonal Tolerance: The difference between the measured diagonals (lines a and b) across the four corners of the steel plate should not exceed 2 mm (see Figure 2).
• Thickness Tolerance: Measure thickness at nine points on the surface of the steel plate.


○	Made from fully hardened steel, featuring high hardness, high strength, and excellent homogeneity, providing wear-resistant and heat-resistant performance.	○	Stable quality, high cost-performance ratio, and long service life.
○	Strong heat and deformation resistance, ensuring no new thermal stress is released during press entry and exit, preventing warping or bending.	○	No rebound after repeated use.
○	High toughness, resisting deformation or scratches caused by thermal expansion/contraction or collisions during handling.	○	Accessories available, including spring clips, bushings, and pins.

Composition / Steel type	C	Si	Mn	P	S	Ni	Cr	Mo	B
Hardo×450	≤0.15	≤0.70	≤1.60	≤0.025	≤0.01	≤0.25	≤0.50	≤0.25	≤0.004
NM450	≤0.20	≤0.60	≤1.50	≤0.025	≤0.01	≤0.10	≤0.40	≤0.20	≤0.004

Project	Metrics (Depending on size and thickness)
Length & Width tolerance	±1.0-2.0mm
Thickness tolerance	±0.5-1.0mm
Flatness	≤3-5mm/m
Parallelism	≤0.1mm
Surface roughness	Ra≤1.2µm-2.5μm

Material		Sweden	China
Material		Hardo×450	NM450
Manufacturing dimensions	Thickness (mm)	6、8、10、12	5、6、8、10、12
	Width (mm)	Max.1300	Max.1300
	Length (mm)	Max.6000	Max.6000
Hardness (HRC)		40-45	40-45
Thermal conductivity (W/mK)		25-44	38.34
Thermal expansion coefficient (10-⁶/℃)		12	13
Density (AVE)		7.85	7.85
Yield strength (Mpa)		≥1200	1100
Tensile strength (Mpa)		≥1400	1400
Elongation (%)		10	8