Clutch Pressure Plate Material
Clutch Pressure Plate Material
(OP)
Anyone know what materials are used for automotive clutch pressure plates? Are they mostly cast iron, or are some steel alloys used?
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Clutch Pressure Plate Material
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RE: Clutch Pressure Plate Material
G11H20b (formerly G3500b)
Brake drums and clutch plates for heavy-duty service where high carbon and high hardness are both required to minimize heat checking and provide higher strength.
RE: Clutch Pressure Plate Material
RE: Clutch Pressure Plate Material
Sorry about that, I was just trying to be precise with the specific grade of gray cast iron typically used. I realize you are extremely knowledgeable on automotive materials, etc. It is my understanding that essentially all high volume automotive applications use cast iron pressure plates, but I am not completely familiar with what our competitors do.
RE: Clutch Pressure Plate Material
I should have been more specific in my question,referenced the SAE spec and should have asked about other potential materials.
RE: Clutch Pressure Plate Material
RE: Clutch Pressure Plate Material
RE: Clutch Pressure Plate Material
I think your idea of using T-1 material has merit.
RE: Clutch Pressure Plate Material
Is the clutch assy for an automatic or manual transmission? AT clutch plates are usually wrought steel, not cast iron.
Since clutches are usually sized based on heat loads, your particular pressure plate material selection will need to take into account the surface temperatures that the pressure plate will experience during operation. The material and heat treatment should have adequate margins for safe operation at those temps combined with any mechanical loads.
Before you select a material, I'd suggest a quick thermal analysis. Estimating the input heat loads at the friction interface is fairly straightforward. The more difficult part is the heat transfer rate away from that surface, through the pressure plate structure, and into whatever local atmosphere it's operating in.
Good luck.
Terry
RE: Clutch Pressure Plate Material