Barauna is an excellent specie at and around the water level. Since the ancient Jesuit’ churches, barauna is used as the construction supporting posts under the churches. After a couple of hundred years, the barauna supports are still in excellent condition. Nowadays, in Bolivia barauna is most commonly used as a railway sleeper, highly resistant to weather changes. Therefore, That’s why ROQUE VALENTE recommends barauna as great economic option for use in and around water shores, such as boarding, decking, bridges, posts and of course sleepers. For more information; please ask! The USDA Forest Service Laboratory says: “schinopsis performed almost as well as teak”!!. Test is based on cracking, wrapping, erosion and swelling. See here for the complete research (15 pages)

 

Massaranduba is better known, barauna are yet unknown species, which definitely is a great opportunity to buy due its accessible price (at least for the moment). Also, barauna tend to crack to a great lesser extend than the better-known massaranduba. The color might be the same apart from the typical tiger-design, however, a red Mercedes is also not to be compared with a red Mazda:

 

Janka

Massaranduba

14200

Aroeira

14170

Baraúna

21770!

 

Other alternatives would be the Brazilian Itauba, Ipe, the African Azobe, Yellow Balau (bankirai) and to some extent Bankirai, Basralocus and of course Angelim Vermelho. The latter however, is due to its penetrate odor definitely not appropriate to be used as a fine outdoor decking. Barauna is extremely hard (21770 Janka hardness at 12%) but that’s not the main reason for its resistance. The natural sapwood resins are the main reason for its resistance against downgrading. Looking at its value for money compared to its competitors, Barauna definitely is your best option!

 

BARAUNA IN COMPARISON WITH OTHER SPECIES

 

Massar

anduba

ipe

barauna

cumaru

balau/ bankirai

merbau

Density 12%inkg/m³

900

950

1030

850

700

730

Density (kg/m3)AD

1360

1150

1280

1200

1150

1000

Radial shrinkage(R%)

6.3

3.3

5.3

5.0

4.6

3.2

Tangential shrinkage(T%)

9.4

5.6

10.3

7.6

10.4

5.4

Modulus of Elasticity at 12%(N/mm2)

24700

22000

16000

20800

15900

15300

Janka hardness at12%(kgf)

14200

16700

21770

15700

7300

6700

Durability class

II

I

I

I

I – II

I – II

For more comparison please check the technical data sheet for most common species.

 

For more information about Barauna or click here for civil and marine applications.

irresistible super hard barauna deck

 

More information on technical details and much more about the Barauna tree (in Portuguese only)

 

barauna close-up (click on the picture)

(two weeks of sun)