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Definition

Low iron glass or low-iron glass, also known as extra clear glass, ultra clear glass, super clear glass, or super white glass. It is a type of high-clarity glass that is made from silica with very low iron content. This low level of iron removes the greenish-blue tint that can be seen especially on larger & thicker sizes of glass.

 

Manufacturers & Different Names

 

Saint Gobain

DIAMANT extra clear glass, low-iron glass

AGC

Clearvision ultra low-iron glass

Vitro former PPG

Starphire ultra-clear & Acuity low-iron glass

Guardian

UltraClear low-iron glass

Pilkington

Optiwhite low iron glass.

Jinjing Group

Ultra clear glass, UL TRANS solar ultra clear glass, ZHICHUN ultra clear glass

 

Features & Benefits

stair tread

Aesthetics

High level color conformity suitable for big area unobstructed view.

Safety

Less than 120PPM iron content, very low spontaneous breakage rate.

High Transmittance

Over 91% visible light transmission, to reveal the real appearance of the things.

UV Filtration

Low iron glass has lower absorption in UV light compared with clear float glass.

Flexibility

3mm~25mm thickness, up to 3300mm*18000mm size.

 

Optical Parameters

Thickness Visible Light Solar Light
(mm)TransmittanceReflectanceTransmittanceReflectance
391.5%8%91%8%
3.291.5%8%91%8%
491.4%8%91%8%
591%8%90%8%
691%8%90%8%
891%8%89%8%
1091%8%89%8%
1291%8%88%8%
1590%8%87%8%
1990%8%86%8%
2289.6%8%85%8%
2589%8%84%8%
     
Thickness U valueSound InsulationUV Penetration
(mm)(W/m2K)Rm (dB)Rw (dB)
35.8263076%
3.25.8263075%
45.8273073%
55.8293271%
65.7293270%
85.7313468%
105.6333666%
125.5343764%
155.5353861%
195.5374059%
225.5384358%
255.5394556%

 

Physical Parameters

Elasticity Modulus73.1Gpa
Rupture Modulus(Tensile Strength-ultimate)41.4 Mpa
Knoop Hardness456kgf/mm2
Density2.5076 g/cm3
Linear Coefficient of Expansion 20-300 ℃9.28×10-6/℃
Linear Coefficient of Expansion 20-450 ℃9.75×10-6/℃
Transformation Temperature556℃
Intenerate Temperature or Yield Point606℃
Softening Point710℃
Annealing Point547℃
Strain Point513℃
High Temperature Viscosity log21392℃
High Temperature Viscosity log31152℃
High Temperature Viscosity log4996℃
Liquid Phase Temperature1008℃

 

Deep Processing

Low iron glass can be processed to high-quality toughened glass, heat-strengthened glass, heat bend glass, glass mirror, online CVD coating, offline MSVD coating, painted glass, silk screen glass, digital printing glass, laminated glass, double glazing, etc.

 

Applications

 

Appliances

Aquarium

Backsplash

Balustrade

Curtain Wall

Doors

Furniture

Handrail

Matrix

Partition

Pool Fencing

Shelf 

Shopfront

Showcase

Shower Door

Skylight

Stair-treads

Tabletop

Windows

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