SC673 Cryogenic −255 °C Epoxy — High-Strength, Anti-Aging, Insulating, Thermal-Cycling Resistant
Cryogenic epoxy. −255 °C no interfacial cracking, 180 °C high-temp. Thermally conductive, vibration/flex resistant, passes multiple aging tests. Medium viscosity, wide substrate compatibility, chemical/thermal-cycling resistant. LN2 soak 1000 h at −196 °C: 95% shear retention; solvent/damp-heat soak 720 h: 22 MPa retained.
Quantum computers, quantum chips, superconducting magnets and low-temperature sensors — bonding, sealing and filling.
- Shear Strength
- 17 MPa (−255 °C)
- Temperature Range
- −255 °C–180 °C
- Aging Resistance
- 100% RH / 70 °C / 720 h
- Viscosity @ 25 °C
- 40000 mPa·s
SCITEO Rigorous Standards: Qualified under GJB 150 environmental reliability testing by Zhenhua, CETC, and CAC, delivering mission-critical reliability.
Engineered as high-reliability domestic qualified alternatives for semiconductor and defense manufacturing clusters across Shanghai Zhangjiang, Xi'an, Chengdu, and Wuxi.
Specifications Don't Match Your Operating Conditions?
Only the baseline series is shown here. SCITEO's undisclosed archive holds formulations engineered for extreme environments. Contact us — our application engineers will match you precisely.
High Reliability Scenarios
Core positioning and partial application demonstration of this product under complex operating conditions.
Cryogenic Sensor Sealing
Cryogenic Sensor Bonding
Quantum Computer Bonding
Application Engineer FAQ
A structured brief from SCITEO covering physical properties, application standards, and related specifications.
High-temp performance?
SC673 is verified by long-term heat aging: 32 MPa initial shear strength at room temperature, retaining 3.5 MPa after 1000 h at 180 °C on etched aluminum — well above the reworkable threshold for a flexible system.
How does SC673 maintain bond at cryogenic temps?
Its very low modulus avoids the cryogenic stiffening typical of rigid epoxies: near liquid-nitrogen temperatures it stays close to the ambient modulus of a standard epoxy, and 5 N/mm peel toughness suppresses cold micro-cracking.
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