Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Wood Hardness

Soft and hardwood - the Janka Hardness scale.

For wood hardness is a measure of resistance to dent and wear.

The Janka test measures the force (N, lbf) required to embed an 11.28 mm steel ball into the wood half the ball's diameter. Larger force - harder wood.

The Janka Hardness Values and Hardness Grades for some common Wood Species

Wood Hardness Grades
WoodJanka Hardness
Hardness Grades
Brazilian Ebony 16420 Exceedingly hard
Ipe 16390
Cumaru 15470
Ebony 14300 Extremely hard
Golden Teak 10400
Merbau 8560 Very hard
Hickory 8100
Rosewood 7900 Hard
White Oak 6000
Ash 5900 Rather hard
Birch 5600
Teak 5140
English Oak 5000 Firm
Burmese Teak 4600
Black Walnut 4500
Cherry 4200
Mahogany 3600
Douglas Fir 2900 Soft
Alder 2600
Chestnut 2400
Poplar 2400
Hemlock 2200
White Pine 1900 Very soft
Balsa 310
  • 1 N = 0.2248 lbf

Related Topics

  • Material Properties

    Properties of gases, fluids and solids. Densities, specific heats, viscosities and more.

Related Documents


Search is the most efficient way to navigate the Engineering ToolBox.

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

Translate this Page

Translate this page to Your Own Language .

About the Engineering ToolBox!

Privacy Policy

We don't collect information from our users. More about

We use a third-party to provide monetization technologies for our site. You can review their privacy and cookie policy here.

You can change your privacy settings by clicking the following button: .


This page can be cited as

  • The Engineering ToolBox (2003). Wood Hardness. [online] Available at: [Accessed Day Month Year].

Modify the access date according your visit.

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Unit Converter