Product Code: 7007

SW Grade Tin

Lead-freeControlled Particle Size Distribution High Sintering Efficiency Aerospace PM Grade Friction Material Additive

High-purity SW grade tin powder. Melting point 449.5°F (231.9°C). Used for sintered components, friction materials, tin compound synthesis, and aerospace/electronics powder metallurgy.

Solidus

449°F (232°C)

Liquidus

450°F (232°C)

Density

0.264 lbs/in³ (7.31 g/cm³)

Primary Elements

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Product Overview

SW Grade Tin Powder is a high-purity, finely atomized tin powder with a melting point of 449.5°F (231.9°C) and a density of 0.264 lbs/in³ (7.31 g/cm³), featuring a controlled particle size distribution and fine greyish-white appearance. The SW grade designation indicates a specific particle size and purity specification suited to demanding powder metallurgy and chemical synthesis applications. SW Grade is used in high-density sintered component production where tight dimensional tolerances and consistent density are required, including powder metallurgy parts for aerospace, automotive, and electronics applications. It is a critical additive in friction material sintering for high-performance braking systems and as a component in tin-based chemical compounds used as catalysts, stabilizers, and specialty reagents. The controlled particle size distribution ensures uniform blending and reliable reactivity across production runs, making it suitable for precision manufacturing in sectors requiring certified material traceability. Also Forms: oxide form. Supplied as fine powder.

Available Forms

Oxide

Product Code

7007

Technical Info

Thermal Properties

Melting Point (Solidus)449°F (232°C)

Melting Point (Liquidus)450°F (232°C)

Physical Properties

Density (imperial)0.264 lbs/in³

Density (metric)7.31 g/cm³

Primary ElementsSn

Lead FreeYes

Key Features

Controlled Particle Size DistributionHigh Sintering EfficiencyAerospace PM GradeFriction Material Additive

Frequently Asked Questions

Common technical inquiries regarding SW Grade Tin

SW Grade and Grade M represent different particle size specifications and production quality levels for tin powder. SW Grade typically specifies a tighter particle size distribution and may require additional quality certifications suitable for aerospace and electronics powder metallurgy where batch-to-batch consistency and material traceability are required. Grade M is the standard industrial grade for bearing production and general friction material use. Buyers should request the specific particle size distribution and quality certificates for each grade to confirm suitability for their application.

Tin metal powder reacts with organic halides and other reagents to produce organotin compounds including dibutyltin dilaurate, tributyltin oxide, and stannous octoate. These compounds are used as PVC heat stabilizers (preventing thermal degradation during processing), catalysts for polyurethane foam production and silicone curing, and biocides in antifouling coatings and wood preservatives. High-purity tin powder is specified for organotin synthesis to minimize byproduct formation from metallic impurities.

Aerospace powder metallurgy applications typically require material certification to AMS (Aerospace Material Specifications) or equivalent standards, with full chemical analysis per heat/lot, particle size distribution report, apparent density and flow rate data, and certificate of conformance. Some applications require first article inspection (FAI) test data correlating powder properties to final sintered part properties. Material traceability from powder lot to finished part is required for most aerospace applications. Buyers should specify their applicable AMS or OEM material specification when ordering SW Grade for aerospace use.