FDA
FDA 21 CFR 1040.10 - Laser Product Performance Standards
Yi-Chun LinPh.D.Taiwan
Laser Materials ProcessingPublished
Dec 10, 2025
Aluminum Bronze Laser Cleaning
Laser cleaning parameters and specifications for Aluminum Bronze
Laser-Material Interaction
Thermal Destruction
1,323
K
256
1,323
3,859
Laser Absorption
0.28
0.02
0.28
4.2e8
Laser Damage Threshold
2.1
J/cm²
0.27
2.1
1.6e4
Ablation Threshold
2.1
J/cm²
0.09
2.1
4.3
Thermal Diffusivity
1.8e-5
m^2/s
2e-6
1.8e-5
0
Thermal Expansion
1.6e-5
10^{-6}/K
4e-6
1.6e-5
31.7
Specific Heat
380
J/kg·K
43.4
380
1,905
Thermal Conductivity
59
W/m·K
7.4
59
450
Laser Reflectivity
0.88
0.4
0.88
73.5
Vapor Pressure
1.2e-8
Pa
0
1.2e-8
1.1e5
Thermal Destruction Point
1,038
°C
133
1,038
3,865
Absorption Coefficient
4.8e7
m^{-1}
5.9e5
4.8e7
9.9e7
Thermal Shock Resistance
210
°C
6.7
210
3.8e5
Reflectivity
0.68
0.35
0.68
1
Absorptivity
0.07
0.02
0.07
0.6
Aluminum Bronze Laser Cleaning Material Characteristics
Density
7.8
g/cm³
1.7
7.8
9,408
Porosity
0
%
0
0
15
Surface Roughness
1.2
μm
0.02
1.2
6.6
Tensile Strength
655
MPa
3
655
3,000
Youngs Modulus
120
GPa
10.4
120
2e11
Hardness
2.5
GPa
0.2
2.5
3,500
Flexural Strength
680
MPa
11.4
680
2,897
Oxidation Resistance
6
μm/year
-554
6
1,762
Corrosion Resistance
0.65
mm/year
-1.1
0.65
1.1e6
Compressive Strength
655
MPa
8
655
2,625
Fracture Toughness
90
MPa m^{1/2}
0.67
90
157
Electrical Resistivity
1.2e-7
Ω·m
0
1.2e-7
2e-6
Electrical Conductivity
4.1e6
S/m
6.6e5
4.1e6
6.6e7
Boiling Point
2,673
K
929
2,673
6,454
Melting Point
1,045
°C
133
1,045
3,865
Regulatory Standards & Compliance
ANSI
ANSI Z136.1 - Safe Use of Lasers
Aluminum Bronze Laser Cleaning Laser Cleaning FAQs
Q: How can I effectively clean oxidation from aluminum bronze using a laser?
A: We've found that oxidation on aluminum bronze builds up stubbornly because of its strong resistance to corrosion, making single passes less effective. You need to use multiple short bursts from the laser to gradually lift the layer without overheating the base material. In our experience, adjusting the beam to a wider focus helps spread the energy and prevents any uneven heating spots.
Q: What settings work best for laser cleaning aluminum bronze parts?
A: When laser cleaning aluminum bronze, the main challenge comes from its high reflectivity, which bounces much of the laser energy away compared to less shiny metals like steel. We typically start with lower power levels and slower scan speeds to build up absorption gradually over the surface. This approach ensures you remove contaminants like grease or scale while keeping the alloy's durable structure intact.
Q: Why does aluminum bronze sometimes warp during laser cleaning?
A: Aluminum bronze can warp if the laser heat isn't managed well, especially since it conducts heat
