Step Tempered Glass

• Core Technical Parameters

Dimensions and Tolerances

Item Specification Range Typical Tolerance
Overall Dimensions Customizable (L × W) ±0.1 mm / ±0.05 mm (high-precision grade)
Glass Thickness 3–20 mm ±0.1 mm
Step Height 0.5–5 mm ±0.05 mm
Step Width 1–20 mm ±0.1 mm
Chamfer/Radius 0.3–5 mm ±0.05 mm
Flatness ≤0.05 mm/100 mm ≤0.02 mm/100 mm for optical grade
Parallelism ≤0.03 mm/100 mm ≤0.01 mm/100 mm for optical grade

• Tempering Performance Parameters

Item Specification Description
Bending Strength ≥200 MPa 3–5 times that of ordinary glass
Impact Resistance Compliant with GB 15763.2, EN 13036-1, etc. Resists high-speed impacts without forming sharp fragments
Thermal Stability Withstands rapid temperature changes of >250°C Suitable for harsh environments with extreme temperature fluctuations
Fracture Pattern Granular, non-sharp fragments Meets safety glass standards to reduce injury risks
Surface Stress ≥90 MPa (standard) / ≥120 MPa (high-strength) Uniform stress distribution with no significant stress concentration

• Optical Indicators

Item Specification Application Scenario
Visible Light Transmittance ≥90% (thickness ≤6 mm) Optical instruments, aerospace windows
Optical Distortion ≤0.1% Precision imaging equipment
Refractive Index 1.516–1.520 (float glass) Optical components
Abbe Number 64–65 Reduces chromatic aberration for improved image quality
Surface Roughness Ra ≤0.02 μm (optical polishing) Optical-grade applications
Coating Options Anti-reflective, reflective, conductive, anti-fog coatings, etc. Enhances optical performance and environmental adaptability

Product Structure and Process Advantages

•  Precision Step Structure: CNC-machined stepped edges enable precise fitting with equipment frames and seals, improving assembly stability and sealing performance.

• Machining Before Tempering: All cutting, drilling, stepping, and chamfering operations are completed prior to tempering to ensure structural accuracy and avoid stress fractures from post-tempering secondary processing.

•  High Strength and Safety: Tempering creates a compressive stress layer on the glass surface and tensile stress inside, significantly enhancing impact, bending, and thermal shock resistance. When broken, it forms small, non-sharp particles in compliance with safety standards.

• Excellent Optical Performance: Optical polishing and coating treatments can be applied to meet stringent requirements for transmittance, distortion, and dispersion in precision optical instruments

Typical Application Areas

• Aerospace: Aircraft windows, onboard instrument display panels, and aerospace equipment protective windows, adapting to extreme conditions such as high-altitude low pressure and rapid temperature changes.

• Optical Instruments: Microscopes, spectrometers, laser equipment, industrial cameras, and other precision optical components to ensure clear imaging and measurement accuracy.

• Medical Equipment: Surgical device windows, medical testing instrument panels, and monitor protective glass, meeting sterile, safe, and high-precision requirements.
  

  
  

• Industrial Instruments: Observation windows for pressure gauges, flow meters, level gauges, and other industrial equipment, withstanding high pressure and corrosive environments.

Customization Services

• Customizable dimensions, thicknesses, step structures, optical coatings, and other parameters to meet specific customer needs.

• One-stop solutions from design, machining, and tempering to testing, ensuring compliance with industry standards and application requirements.

• Third-party testing support with complete quality reports and technical documentation provided.