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AISI 347 Stainless Steel Foil (Light Tight)

Available Configurations

Properties common to all products in this list

Commodity: Alloys Material: Stainless Steel Form: Foil (Light Tight) Grade: AISI 347 Composition: Fe/Cr 18/Ni10/Nb UNS Number: S34700 Temper: Annealed Coating: Uncoated Opacity: Light Tight Surface Finish: Standard
AISI 347 Stainless Steel Foil (Light Tight) is a niobium-stabilized austenitic alloy designed to deliver exceptional resistance to intergranular corrosion, oxidation, and creep, while ensuring a completely opaque structure free from pinholes, preventing any light transmission. Its fine-grained, uniform microstructure maintains high mechanical integrity even under extreme thermal cycling, making it indispensable for applications demanding absolute barrier performance and precision thin-gauge engineering. Industries such as aerospace, electronics, and optics employ this foil for uses including hermetic shielding in high-sensitivity instruments, substrates for OLED display backplanes, and heat-resistant barriers in optical sensing systems. Research applications focus on creep rupture behavior, fracture toughness in ultra-thin configurations, and surface treatments that preserve opacity under prolonged high-temperature exposure. The combination of total light-blocking capability, corrosion resilience, and high-temperature strength establishes its value in both advanced industrial manufacturing and experimental scientific setups.
Starting at $266.00 each
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Material Properties

Mechanical Properties
Element Value
Hardness - Brinell 160-190
Elongation at break( % ) <60
Modulus of elasticity( GPa ) 190-210
Izod impact strength( J m⁻¹ ) 20-136
Tensile strength( MPa ) 520-1100
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 70-73
Thermal Properties
Element Value
Maximum use temperature in air( C ) 800
Melting point( C ) 1400-1425
Thermal conductivity( W m⁻¹ K⁻¹ ) 16.3@100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 16-18@20-100°C
Physical Properties
Element Value
Density( gcm⁻³ ) 7.93
each

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Available Configurations

Properties common to all products in this list

Commodity: Alloys Material: Stainless Steel Form: Foil (Light Tight) Grade: AISI 347 Composition: Fe/Cr 18/Ni10/Nb UNS Number: S34700 Temper: Annealed Coating: Uncoated Opacity: Light Tight Surface Finish: Standard

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Tolerances

Foil (Light Tight)
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%