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Materials / Plantation and tropical hardwood

Acacia Wood: Species, Properties and How to Specify It

A plantation hardwood with warm golden to dark brown color and strong contrast. Popular for dining furniture, outdoor sets and cutting boards. "Acacia" covers many species, so name the one you want.

Send an RFQHow to specify it
Acacia-style hardwood with strong contrast between dark heartwood and pale sapwood
AcaciaPlantation and tropical hardwood
Species
Acacia mangium, Acacia auriculiformis and their hybrids (plantation acacia)
Janka
About 1,100 lbf
Density
About 650 kg/m³
Stability
Medium
Relative cost
Low
Target moisture
8 to 12 percent for interior products, 12 to 15 percent for outdoor furniture, set by destination climate
Typical valuesConfirm on the quote

Acacia is a trade name, not one wood. The genus has hundreds of species, and timber sold as acacia ranges from light plantation stock to dense, dark tropical wood. For manufactured products, most acacia comes from fast-growing plantations in Southeast Asia and other tropical regions, mainly Acacia mangium, Acacia auriculiformis and hybrids of the two. These trees are harvested young, often for pulp, and the larger logs go to sawmills.

Buyers like acacia for its color. Heartwood runs from golden brown to deep chocolate, with pale sapwood and visible streaks, so a finished top shows strong contrast at a low wood cost. It is used for dining tables, benches, outdoor sets, cutting boards, serving boards and bowls.

The same variety that sells the product is the main risk in an order. Two shipments called acacia can differ in species, density, color and sapwood content. Logs are small, so most parts are edge-glued or finger-jointed. A clear written spec, a species name and an approved color range protect you more than the word acacia on a quote.

Properties

Janka hardnessVaries widely by species: roughly 1,100 lbf for plantation mangium and hybrid stock, over 2,000 lbf for some denser species sold as acacia. Typical, check per species.
Density at 12 percent moistureAbout 600 to 700 kg/m³ for plantation mangium and hybrid stock, typical. Denser species run higher.
Shrinkage and movementModerate. Plantation acacia is usually reported as fairly stable once dried, but values vary by species and log age.
Grain and textureStraight to interlocked grain, medium texture. Interlocked grain can tear out on planing.
ColorGolden to dark brown heartwood with streaks, pale yellow sapwood. Strong board to board variation.
Natural durabilityModerate for plantation heartwood. Outdoor use needs heartwood, an oil or coating and regular care.
Why the Janka figure shown is lowThe 1,100 lbf figure is a conservative value for plantation stock. Ask the factory which species it supplies and test samples if hardness matters.

Typical published values for wood at about 12 percent moisture. Individual boards and panels vary.

Grades you will see on a quote

The grade decides how much clear wood you pay for. Name it on the RFQ and ask for photos of what the factory calls that grade.

  • Clear or select (trade grade)No knots on show faces, limited sapwood. Used for visible tops and premium boards.
  • Natural or character (trade grade)Sapwood streaks, color contrast and small sound knots allowed. The usual grade for rustic dining and cutting boards.
  • Edge-glued, finger-jointed (FJ)Short clear pieces joined end to end and edge-glued. Lower cost, joints visible.
  • Edge-glued, full staveStaves run the full length with no finger joints. A cleaner look at a higher price.
  • Live edge and slabSingle or book-matched slabs from larger logs. Limited sizes, priced per piece.
  • Grade names vary by millThere is no common published grading rule for plantation acacia. Agree on photos, a sapwood limit and a knot limit in writing.

Where acacia works

Products and parts where it earns its price, and where another material is the better buy.

Dining tables and benches

Edge-glued tops with strong color contrast, often with a natural oil or lacquer finish.

Outdoor furniture

Chairs, tables and loungers in heartwood with an oil or exterior coating. Needs maintenance outdoors.

Cutting boards and serving boards

Edge grain and end grain boards. Confirm the glue and finish are suitable for food contact.

Bowls and kitchenware

Turned bowls, trays and utensils in solid or laminated stock.

Flooring and decking tiles

Click decking tiles and interior flooring, where heartwood content matters.

Furniture components

Legs, frames and drawer fronts for natural finish furniture lines.

Where it is a poor fit

  • Products that need an even, uniform color across a set. Acacia varies strongly from board to board.
  • Painted parts. The cost advantage is in the natural color, and cheaper woods paint just as well.
  • Orders where the species cannot be named or traced. Hardness, color and legality checks all depend on knowing what was supplied.

In the factory

How acacia behaves in machining, gluing, finishing and drying. These points explain most price and quality differences between quotes.

  • MachiningMachines well with sharp tooling. Interlocked grain can tear out, so shallow cuts and a high cutter speed help.
  • GluingGlues well with PVAc and polyurethane adhesives. For outdoor and wet use, specify a water resistant adhesive class.
  • FinishingTakes oil, lacquer and exterior coatings well. Dark heartwood and pale sapwood stay different under clear finish.
  • DryingFast-grown wood can carry growth stress and warp if dried fast. Ask for kiln dried and conditioned stock, not air dried only.

At each process step

  • 03Finger jointing and edge gluingGlues well but varies strongly in color between pieces. Color sorting before gluing decides how a top looks.
  • 04Planing and mouldingInterlocked and irregular grain tears out easily. A lower cutting angle and slower feed help on show faces.
  • 11Inspection and packingColor and grain vary widely, so color sorting against limit samples is part of every final inspection.

Hardness compared

Acacia against the other solid woods buyers ask about. Hardness matters for tops, floors and parts that take knocks. For legs, frames and hidden parts, stability and price usually matter more.

Janka hardness, typical published values in lbf. Higher resists dents better. It is one property among several.

How to specify acacia

Example RFQ lines you can adapt.

  • Acacia mangium or hybrid, plantation grown, heartwood only on show faces, kiln dried to 8 to 12 percent.
  • Acacia edge-glued table top, full stave, staves 50 to 70 mm wide, natural color variation accepted per approved photo range.
  • Acacia end grain cutting board, food safe adhesive and mineral oil finish, no sapwood cracks or open checks.

What to check on samples

Approve one sample in writing and keep it as the reference for every shipment.

  1. Species name on the quote, the packing list and the legality documents
  2. Color range across a stack of samples against the approved photo set
  3. Sapwood and knot limits on show faces
  4. Moisture readings on finished parts, especially for cool dry destinations
  5. Glue lines and finger joints on tops after a few weeks indoors
  6. Hardness or dent behavior on samples if the product takes wear

Alternatives to acacia

When price, supply or the use case points elsewhere.

  • TeakHigher durability and natural oils for outdoor use, at a much higher price.
  • Black walnutDark, even color with a premium look. Much higher cost and longer clear lengths.
  • RubberwoodSimilar price and pale even color. Chosen for stained or painted parts rather than natural contrast.

Products often made in acacia: table tops and countertops, panels and veneer, kitchenware and small wood goods, wood packaging and boxes, pallets and crates.

Product lines in acacia: RTA furniture kits, desk tops, edge glued panels, cutting boards.

Questions about acacia

Related guides:

  • Wooden Kitchenware and Toys: Food Safety and Child Safety Specs
  • Custom Wood Table Tops: Specifications That Get an Accurate Quote
  • Compliance Rules That Apply to Manufactured Wood Products

Reference: Wikipedia: Acacia mangium

Is acacia a hardwood?

Yes. All acacia species are broadleaf trees and are classed as hardwoods. How hard a given product is depends on the species, which can range from about 1,100 lbf to over 2,000 lbf on the Janka scale.

Which acacia species is used for furniture?

For manufactured products, most acacia is plantation Acacia mangium, Acacia auriculiformis or hybrids of the two. Other species are also sold as acacia, so ask the factory to name the species in writing.

Can acacia be used outdoors?

Heartwood can, with an oil or exterior coating and regular care. It is less durable than teak. Sapwood should not be used outdoors.

Why do acacia samples look different from the shipment?

Color varies by log, species and sapwood content. Approve a range of samples or photos, not a single board, and write the accepted range into the order.

Is acacia good for cutting boards?

It is widely used for them. Ask for a food safe adhesive and finish, and check the board for open checks and loose glue lines before shipment.

Other plantation and tropical hardwoods

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