Wood Species - purple heart
Color: Heartwood is brown when freshly cut, turning deep purple to purplish
brown over time. Sapwood is a lighter cream color.
Grain: Usually straight; medium to fine texture.
Variations within species and grades: Moderate to high color variation.
Hardness (Janka): 1860; 44% harder than Northern red oak.
Dimensional Stability: Excellent (change coefficient .00212; 43% more
stable than red oak).
Durability: Very strong and dense.
Sawing/Machining: Moderately difficult due to hardness; frequent sharpening
of tools required; slow feed rate and carbide tooling recommended.
Nailing: Good holding ability.
Sanding: Sands satisfactorily.
Finishing: Takes finishes well; some have found that water-based finishes
hold color better. Tendency to bleed with some finishes.
Comments: Heartwood is very resistant to dry-wood termites. Presence
of minerals in some boards may cause uneven coloration.
From The National Wood Flooring
Association's "Wood Species Used in Wood Flooring" information booklet.
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