1050 aluminum plate for PS/CTP board base

Both the PS version and the CTP version use a pure aluminum plate as the base, and then coat the surface with photosensitive materials. CTP version is the product of computer direct plate making technology and is a high-end product of PS version. Its specifications are usually (0.14-0.38)*(400-1500)mm. The use of CTP technology can improve the efficiency and quality of product plate making and printing production.

The CTP plate base is directly plate-made by computer. This high-end product is widely used in offset printing plates such as positive PS plates, thermal CTP plates, photosensitive CTP plates, and UV-CTP plates.

The base material of the PS/CTP version is usually 1 series pure aluminum plate, of which 1050 aluminum plate and 1060 aluminum plate are the most common choices. These aluminum plates show excellent quality during the printing process and have the advantages of high print durability, environmental friendliness, hygiene and cleanliness, and reasonable cost. They also perform well in terms of resolution, writing clarity, printing speed and reproducibility.

The commonly used base material of PS/CTP plate is 1050A aluminum plate, which has certain requirements in terms of surface quality, flatness, thickness tolerance and performance.

PS CTP plate base aluminum material specifications

Typical alloys: 1050A, 1050, 1060
Material status: H18
Thickness (mm): 0.13-0.40
Width (mm): 650-1420
Length (mm): C (according to customer requirements)

The aluminum substrates produced by Haomei Aluminum are 1050 aluminum plates, 1060 aluminum plates, and 1070 aluminum plate alloys, with aluminum contents of ≥99.50%, ≥99.60%, and ≥99.70% respectively. It has the advantages of low density, high strength, moderate wear resistance, good formability, good hydrophilicity, high stability, and good surface treatment, making it an indisputable high-quality PS/CTP plate base material.

PS CTP base performance parameters

Alloy	1050A	1060
Tensile strength (normal temperature)	185~215MPA	200~230MPA
Tensile strength (baking plate)	125~140MPA	125~140MPA
Elongation after break	>1%	>1%

1050 aluminum plate for PS CTP board base appearance requirements

The appearance requirements of PS/CTP base are very strict.
The aluminum plate base material must be kept clean and flat.
Defects such as cracks, corrosion pits, dots or vents, scratches, creases, marks, peeling, pine branches, oil marks and other defects are not allowed.
The surface shall not have defects such as non-metallic intrusion, adhesion, horizontal skin, or horizontal lines.
There should be no slight color differences or bright stripes.
There should be no bulging or ruffles on the aluminum plate.

CTP plate base has very strict quality requirements for plate surface and plate shape. Therefore, during the hot rolling process, product quality needs to be controlled by controlling processing parameters, optimizing processes, and manual inspection. Haomei Aluminum has dedicated melting furnaces, static furnaces, casting machines, professional three-stage filtration systems, and experienced foundry workers when producing CTP base plates. A series of standardized processes ensure that there are no quality problems in the products.

PS CTP Aluminum Substrate

Chemical composition of PS CTP Substrate

Alloy	1050		1060		1070
	Min	Max	Min	Max	Min	Max
Al	99.5		99.6		99.7
Si	0.05	0.2		0.25		0.2
Fe	0.2	0.4		0.35		0.25
Cu		0.03		0.03		0.03
Mn		0.03		0.03		0.03
Mg		0.03		0.03		0.03
Cr		0.05
Zn		0.02		0.05		0.07
Ti		0.03		0.03		0.03
The others		0.03		0.03		0.03

Physical and mechanical properties of PS CTP Aluminum Substrate

Alloy		1A25 H18		1060 H18		1050 H18
Direction		Horizontal	longitudinal	Horizontal	longitudinal	Horizontal	longitudinal
Room Temperature	Yield Strength Rp 0.2 (Mpa)	150-190	155-205	160-190	170-195	170-190	170-180
	Tention Strength	170-205	170-205	170-200	180-200	180-205	180-190
	Elongation A50%	2.0-2.5	1.5-5.5	2.5-3.0	2.5-3.0	2.0-2.5	2.0-2.5
Baking Temperature (280℃, 4min)	Yield Strength Rp 0.2 (Mpa)	130-178	140-170	130-135	130-145	165-180	145-165
	Tention Strength Rp 0.2 (Mpa)	140-190	160-180	140-150	145-150	170-190	150-180
	Elongation A50%	2.0-3.0	2.0-4.0	2.0-2.5	2.5-3.0	3.0-3.5	3.0-3.5
Baking Temperature (280℃, 10min)	Yield Strength Rp 0.2 (Mpa)	154	148	150	145	166	162
	Tention Strength Rp 0.2 (Mpa)	163	1544	164	162	185	170
	Elongation A50%	2.7	2.7	2.2	2.7	2.7	3.2

Geometric properties of 1050 aluminum plate for PS/CTP board base

Params	Size	Tolerance
Width/mm	400-1030	±0.3
Width/mm	1031-1650	±0.5
Thickness/mm	≤0.35	±0.005
Thickness/mm	>0.35	±0.007
Roughness	Frant	±0.2±0.1
Roughness	Both sides	≤20

Haomei Aluminum is a large-scale aluminum plate manufacturer in China. It has long-term supplied 1-series aluminum alloy plates for PS plate bases/CTP plate bases. It has a history of more than ten years. As one of the company's advantageous products, the product quality is excellent, printing aluminum plate bases, etc. The products occupy more than 50% of the domestic market share and are well received by customers!

Haomei Aluminum selects high-quality raw materials when casting the CTP base. During the production process, it has advanced equipment and professional casting workers, and strictly follows the standards to ensure excellent product quality.