Steel slag, such as electric arc furnace slag (EAFS) or steel furnace slag (SFS), results from steelmaking processes. Steel slag consists mainly of calcium silicate and calcium aluminum ferrites with varying amounts of aluminum oxide, magnesium oxide, iron oxide, and sulfur.

Olive & Branch M&D’s SAF Slag consists mainly of silicates and aluminum silicates of lime (calcium oxide) and other bases. SAF Slag is water cooled (granulated). The water cooling or quenching process produces a glassy, granulated slag composed of sand-sized particles max about 0.75 in. and finer in size.

SAF Slag Applications
The durability, hardness, and low-cost of slag materials results in a variety of end uses such as soil stabilizer, lightweight concrete aggregate, road base construction material, roofing granules, and abrasive blast media.

• Back fill and construction fill – Slags are used as fills in construction sites or between masonry walls.
• Blast media – SAF slag can be used as an abrasive grit or blast cleaning medium to remove rust, dirt, and various forms of surface contamination from a broad spectrum of steel or foundry products. The sharp angular and dense crushed slag particles are ideal for abrading a textured surface on metal, which enhances bond with paint, enamel, rubber, or other coatings.
• Chip and seal - Chip and seal is a low-cost method for resurfacing rural or low traffic roadways or driveways. A single or double application of bituminous surface treatment with one or more layers of fine aggregate (slag, sand, gravel) applied to existing pavement surfaces achieves skid resistance and improves driving safety.
• Concrete aggregate – SAF Slag can be an aggregate material for additions to concrete mixes.
• Glass – SAF Slag can be used as a raw material for glass manufacture.
• Roofing aggregate – SAF Slag particles are useful as roofing aggregate particles on asphalt shingles. The inertness and high durability of SAF slag make the material an ideal weather resistant aggregate for shingle applications. Slags are highly resistant to deterioration from freezing and thawing cycles.
• Soil stabilizer/road base – The angularity and interlocking nature of slag particles make the material an ideal soil stabilizer and road base material. Slag stabilizers have a high angle of shearing resistance. The free lime content in slags also provides a weak cementing action.

Check out our SAF Slag product page below to learn more about this unique product.