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Foamed iron powder, also known as sponge iron powder, is produced by adding a foaming agent to iron powder in a high-temperature furnace above 1500°C, transforming the iron powder into a porous, sponge-like material. When used in friction materials, it helps regulate friction performance by stabilizing the friction coefficient. Compared to reduced iron powder, it has a lower specific gravity, and its porous structure helps reduce braking noise in semi-metallic friction material products during use.
Project | Unit | Technical Indicators |
Density | g/cm3 | 4.8-5.3 |
bulk density | g/cm3 | 1.8-2.0 |
moisture content | % | ＜1 |
granularity size | mesh | 40-120 |
Fe content | % | ＞95 |
Daye Duxin Friction Powder Co., Ltd.
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