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Plate materials and the gasket materials mainly depend on the corrosive properties and temperatures of the cold exchange medium and the heat exchange medium. The plate heat exchanger's plate materials and corresponding applicable places are given in Table 1 and its gasket materials and corresponding applicable places in Table 2 for your reference.

Table 1 Plate Materials

Material name	Thickness (mm)	Material grade	Applicable place
Stainless steel	0.5-0.8	304,321,316,316L	Places with serious corrosion caused by acid or base mediums and places not suitable for chloride ions
Commercial pure titanium	0.5-0.8	Ti	Alkali or salt making places, sea water desalination places, low-temperature places, freezing places or places with chloride-ion corrosion
Nickel	0.5-0.8	Ni	Places resistant to corrosion, hot alkali liquor corrosion, neutral solutions or subacid solutions
Acid-resistant steel	0.5-0.8	RS-2, SM0254, HC-276	Sulfuric acid field and the fields with acid corrosion

Table 2 Gasket Materials

Sealing gasket is inserted and fixed to the slot in heat-exchanging sheet, featuring easy insertion and replacement of sealing gasket, which can substantially reduce stoppage time. Sealing function is separated from fixing function. Even if some "clamps" with fixing function fail, the gasket can still have sealing function in the slot.

Material name	Code	Applicable temperature	Applicable place
NBR	N	-20~110ºC	Water, non-polar oil, mineral oil, lubricating oil, silicon oil, etc.
EPDM	E	-50~150ºC	Steam, water, ozone, polar chemical mediums, alcohol, weak acids, weak bases, salt solutions, etc.
Fluorine Rubber	F	0~180ºC	Inorganic acids, bases, mineral oil, halohydrocarbon and oxidant
Silicon rubber	Q	-65~230ºC	Food field, etc.

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