Corning 7980 Glass Substrate

Data sheet

Density	2.201 g/cm3

More info

Corning 7980 Glass Substrate is a high-purity synthetic fused silica made by flame deposition, known for its excellent optical and thermal properties. It offers over 90% transmittance from 200 nm to 2500 nm, low thermal expansion, and strong resistance to thermal shock and chemical degradation. Available in different grades like 7980 ArF and 7980 KrF, it performs better than standard JGS1 and JGS2 substrates. It is commonly available in sizes from 4 to 8 inches and is widely used in optical windows, laser components, and photolithography. Heeger Materials provides high-quality Corning 7980 Glass Substrate for various applications.

Corning 7980 Glass Substrate

Corning 7980 Glass Substrate Standard Grade

The quality of HPFS glass is defined and certified by two key standards: inclusion class and homogeneity grade.

Inclusion Class			Homogeneity (ppm)
Inclusion Class			Grade
Class	Total Inclusion Cross Section (mm²)	Maximum Size (mm)	AA (≤ 0.5)	A (≤ 1)	B (≤ 1.5)	C (≤ 2)	D (≤ 3)	E (≤ 4)	F (≤ 5)	G (NS)
0	≤ 0.03	0.10	√	√	√	√	√	√	√	√
1	≤ 0.10	0.28		√	√	√	√	√	√	√
2	≤ 0.25	0.50			√	√	√	√	√	√
3	≤ 0.50	0.76				√	√	√	√	√
4	≤ 1.00	1.00				√	√	√	√	√
5	≤ 2.00	1.27				√	√	√	√	√

Corning 7980 Glass Substrate Mechanical and Thermal Properties

Young's Modulus	72.7 GPa
Shear Modulus	31.4 GPa
Modulus of Rupture	52.4 MPa
Bulk Modulus	35.4 GPa
Poisson's Ratio	0.16
Density	2.201 g/cm³
Knoop Hardness (100 g)	522 kg/mm²
Softening Point	1585°C (10⁷·⁶ poises)
Annealing Point	1042°C (10¹³ poises)
Strain Point	893°C (10¹⁴·⁵ poises)
Thermal Conductivity	1.30 W/m·K
Thermal Diffusivity	0.0075 cm²/s
Average Thermal Expansion	5°C-35°C	0.52 ppm/K
	0°C-200°C	0.57 ppm/K
	-100°C-200°C	0.48 ppm/K

Corning 7980 Glass Substrate Chemical Durability and Impurities

Solution	Test Conditions	Weight Loss (mg/cm²)
5% HCl	@ 95°C, 24 hours	<0.010
5% NaOH	@ 95°C, 6 hours	0.453
0.02N Na₂CO₃	@ 95°C, 6 hours	0.065
0.02N H₂SO₄	@ 95°C, 24 hours	<0.010
Deionized Water (H₂O)	@ 95°C, 24 hours	0.015
10% HF	@ 25°C, 20 minutes	0.230
10% NH₄F·HF	@ 25°C, 20 minutes	0.220
Impurities	OH Content	800–1000 ppm
Impurities	Other Impurities	≤ 1000 ppb

Corning 7980 Glass Substrate Specifications

Specification (Unit)	4"	6"	8"	10"	12"
Diameter (mm)/Size(or square)	100	150	200	250	300
Tolerance (mm)	±0.2	±0.2	±0.2	±0.2	±0.2
Thickness (mm)	≥0.10	≥0.30	≥0.40	≥0.50	≥0.50
Primary Flat (mm)	32.5	57.5	Semi-notch	Semi-notch	Semi-notch
Local Thickness Variation (LTV, 5mm×5mm, µm)	<0.5	<0.5	<0.5	<0.5	<0.5
Total Thickness Variation (TTV, µm)	<2	<3	<3	<5	<5
Bow (µm)	±20	±30	±40	±40	±40
Warp (µm)	≤30	≤40	≤50	≤50	≤50
PLTV (5mm×5mm, <0.4µm, %)	≥95%	≥95%	≥95%	≥95%	≥95%
Edge Rounding (mm)	Complies with SEMI M1.2 standard or IEC62276 reference
Surface Type	Single-side polished or double-side polished
Polished Surface Roughness (Ra, nm)	≤1
Backside Standard (µm)	Typically 0.2-0.7, or customizable as needed

Note: In addition to our Stock Modes, Heeger Materials provides customized services to meet your needs.

Corning 7980 Glass Substrate Internal Transmittance Curve

HPFS Standard Grade ensures an external transmittance (T external) of ≥80%/cm and an internal transmittance (T internal) of ≥88%/cm at 185 nm. These values are derived from precise testing on polished, uncoated samples under controlled laboratory conditions. Below is a typical internal transmittance curve for HPFS Standard Grade fused silica.

Corning 7980 Glass Substrate Internal Transmittance Curve

Corning 7980 Glass Substrate Applications

Optical Components: Used in high-precision lenses, windows, and mirrors for laser systems and scientific instruments.
Semiconductor Lithography: Essential for photomask substrates and stepper optics in advanced semiconductor manufacturing.
UV and IR Transmission: Ideal for applications requiring high transparency across a broad spectral range, including UV and IR optics.
Laser Systems: Supports high-power laser applications due to its low absorption, high damage threshold, and thermal stability.
Aerospace and Defense: Utilized in space optics, sensors, and high-performance optical coatings for extreme environments.

Corning 7980 Glass Substrate Packing And Shipping

Corning 7980 Glass Substrate will be securely packaged in sturdy containers with cushioning materials to prevent movement or damage during shipping. This careful packaging ensures that the product arrives in perfect condition, maintaining its high-quality standards throughout the delivery process.

Where to Buy Corning 7980 Glass Substrate in Bulk?

Heeger Materials Inc., a professional supplier and manufacturer of high-quality Conductive Glass Substrates products including Corning 7980 Glass Substrate, leverages extensive expertise in supply and export to offer competitive prices. We provide customized solutions to meet specific requirements, ensuring exceptional quality and customer satisfaction.

Heeger Materials Inc. was established in 2016 in Colorado, USA. We specialize in premium-grade metals, alloys, ceramics, powders, and other materials catering to research, development, and large-scale industrial production in scientific and industrial sectors.

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