Hard wood board with density >700kg/m³ (IEC 61010-1)

[Benjamin Weber]

Dear experts,

I am struggling with a requirement in IEC 61010-1 (sorry, did not know whoch forum would be the best). For the drop test for hand-held equipment in cl. 8.3.2 a "hard wood board having a density of more than 700kg/m³" isr required.

So far we used beech, which fulfills IEC 60601-1 requiring the wood density for the drop test to be more than 600kg/m³. Now we tried massive oak which reached 645kg/m³ and oak multiplex which also reached only 648 kg/m³.

Do you have an idea, whoch kind of wood could be used for that?

 

[Jaydub]

Hard Maple was my first thought for something readily available. Lignum Vitae would get you there.

Take a look at this: Wood Species - Densities

 

[optomist1]

yes try "Ipe", aka Brazilian Walnut...https://www.wood-database.com/ipe/

 

[optomist1]

Screenshot from the above link:

Common Name(s): Ipe, Brazilian Walnut, Lapacho

Scientific Name: Handroanthus spp. (formerly placed in the Tabebuia genus)

Distribution: Tropical Americas (Central and South America); also farmed commercially

Tree Size: 100-130 ft (30-40 m) tall, 2-4 ft (.6-1.2 m) trunk diameter

Average Dried Weight: 69 lbs/ft3 (1,100 kg/m3)

Specific Gravity (Basic, 12% MC): .91, 1.10

Janka Hardness: 3,510 lbf (15,620 N)

Modulus of Rupture: 25,660 lbf/in2 (177.0 MPa)

Elastic Modulus: 3,200,000 lbf/in2 (22.07 GPa)

Crushing Strength: 13,600 lbf/in2 (93.8 MPa)

Shrinkage: Radial: 5.9%, Tangential: 7.2%, Volumetric: 12.4%, T/R Ratio: 1.2