FDA
FDA 21 CFR 1040.10 - Laser Product Performance Standards
Alessandro MorettiPh.D.Italy
Laser-Based Additive ManufacturingPublished
Dec 10, 2025
Ebony Laser Cleaning
Laser cleaning parameters and specifications for Ebony
Laser-Material Interaction
Thermal Destruction
573
K
226
573
642
Laser Absorption
0.15
0.78
0.15
3.4e5
Laser Damage Threshold
3.2
J/cm²
0.0025
3.2
5.4
Ablation Threshold
1.4
J/cm²
0.51
1.4
2.6
Thermal Expansion
4.2e-6
K^{-1}
1e-6
4.2e-6
5.8e-5
Specific Heat
1,420
J/kg·K
1.3
1,420
1,554
Thermal Conductivity
0.16
W/(m·K)
0.04
0.16
0.4
Laser Reflectivity
0.04
0.02
0.04
0.44
Ebony Laser Cleaning Material Characteristics
Density
1.2
g/cm³
0.4
1.2
955
Porosity
8
%
0.39
8
0.79
Surface Roughness
2
μm
0
2
4
Tensile Strength
120
MPa
9.5
120
209
Youngs Modulus
15
GPa
3.3
15
1.1e4
Hardness
0.8
GPa
399
0.8
1.3e4
Flexural Strength
180
MPa
19.1
180
148
Oxidation Resistance
4
μm/year
0.1
4
549
Corrosion Resistance
0.93
mm/year
0
0.93
4.7
Compressive Strength
120
MPa
20
120
80
Fracture Toughness
3
MPa m^{1/2}
0.26
3
2
Electrical Resistivity
1e10
Ω·m
9.5e9
1e10
1e12
Ebony surface magnification
Before Treatment
When we examine ebony's contaminated surface up close, grime layers coat every crevice and dull the natural sheen. Dust particles cluster in uneven patches, making the texture look rough and clogged. Scratches from wear hide beneath this buildup, obscuring the wood's fine details.
After Treatment
After laser treatment, we've found the surface gleams smoothly with no residue left behind. The clean texture reveals sharp grain lines that run evenly through the material. Polished areas now shine uniformly, bringing back
Regulatory Standards & Compliance
ANSI
ANSI Z136.1 - Safe Use of Lasers
Ebony Laser Cleaning Laser Cleaning FAQs
Q: How do I prevent burning ebony during laser cleaning?
A: You must start with lower power settings to gently remove surface dirt without overheating the dense wood. Ebony's hardness helps it withstand the process, but its low heat tolerance means you should use short pulses that clear buildup quickly. Keep the laser moving steadily across the surface to avoid hot spots. In my experience, this approach restores the natural finish beautifully. Watch out for prolonged exposure, as it can char the material and ruin your work.
Q: What's the best practice for cleaning old dirt off ebony artifacts?
A: Make sure you test the laser on a small hidden area first to see how the ebony responds. The wood's tight grain absorbs energy evenly, so a focused beam works well to lift grime without scratching. You'll want to follow up with a soft cloth to polish away any residue left behind. This method preserves the ebony's deep color and smooth texture effectively.
