Tin Powder-Ren Yi Ju | Professional Metal Powder

Our high-purity tin powder (Sn powder) is specially formulated for diamond tool manufacturing as a critical matrix additive. As a low-melting-point metal binder, tin plays an essential role in diamond tool formulations — enabling liquid-phase sintering, reducing processing temperatures, improving diamond wettability, and enhancing overall tool performance. Suitable for both hot pressing and free sintering processes, our tin powder is widely used in diamond saw blades, grinding wheels, drill bits, and various diamond-impregnated tools.

Parameter	Value
Chemical Symbol	Sn (Stannum)
Purity	≥ 99.5% - 99.9%
Appearance	Dark gray metallic powder
Melting Point	231.9°C
Particle Size	Various mesh sizes available (200-600 mesh)
Particle Morphology	Spherical / Irregular
Oxygen Content	Low
Apparent Density	2.0 - 3.5 g/cm³ (varies by grade)

Core Functions & Benefits in Diamond Tools

✅ Lowers Sintering Temperature — With a melting point of only 231.9°C, tin melts early during sintering to create a liquid phase, significantly reducing overall sintering temperature to 700-800°C. This protects diamonds from thermal damage and reduces energy costs.

✅ Enables Liquid-Phase Sintering — Liquid tin facilitates particle rearrangement and densification of matrix powders (copper, cobalt, iron, etc.), resulting in a denser, more uniform matrix structure.

✅ Improves Diamond Wettability — Molten tin effectively wets diamond surfaces and forms alloys with other matrix elements through diffusion, enhancing diamond encapsulation and significantly improving diamond holding power.

✅ Enhances Matrix Densification — Capillary action during sintering promotes matrix shrinkage and densification, resulting in higher mechanical strength and better wear resistance.

✅ Boosts Tool Sharpness — Tin improves self-sharpening characteristics of the matrix, enabling faster exposure of fresh diamond cutting edges for improved cutting efficiency and sharpness.

✅ Improves Press Formability — Tin enhances the compressibility and green strength of powder mixtures, improving cold pressing performance and reducing molding defects.

✅ Enhances Weldability — Improves the welding strength and stability when brazing diamond segments onto saw blade cores.

✅ High Purity, Low Impurities — Ensures consistent sintering behavior and reliable batch-to-batch performance.

Our tin powder is widely used in the manufacturing of various diamond tools:

💎 Diamond Saw Blades

Stone cutting saw blades (granite, marble, sandstone)
Concrete and asphalt saw blades
Ceramic tile cutting blades
Small and large diameter saw blades
Diamond segments

⚙️ Diamond Grinding Tools

Diamond grinding wheels
Edge grinding wheels
Diamond grinding blocks
Calibrating rollers
Honing stones

🔧 Diamond Drilling Tools

Diamond core drills
Hole saws
Engineering drill bits
Glass and ceramic drills

✨ Other Applications

Powder metallurgy structural parts
Brazing materials
Solder pastes
Friction materials
Bearing materials
Electrical carbon products

Keywords: Tin Powder

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