Foam glass

Product Overview

Yahong foam glass thermal insulation material, with excellent performance of high temperature resistance, corrosion resistance, low water absorption, has passed many international certifications. By relying on advanced formulas and processes, we meet the stringent insulation requirements of petrochemical storage tanks, building exterior walls, etc., and build a solid energy-saving barrier for the project.


YH foam glass is a new environment-friendly inorganic thermal insulation material with uniform and independent closed air gap structure, which is made of glass as the main raw material, mixed with a proper amount of foaming agent, and cooled by furnace high-temperature foaming and annealing. Due to its complete retention of the chemical stability of inorganic glass, it has low bulk density, low thermal conductivity, no moisture permeability, no water absorption, no combustion, no mold, no rodent bite, high mechanical strength but easy processing, and can withstand all chemical attacks except hydrogen fluoride.

YH foam glass is not only non-toxic and chemically stable, but also has good thermal insulation performance that will not deteriorate in a wide range of temperatures from ultra-low to high temperatures. It also plays a role in moisture-proof, fireproof and anti-corrosion. It is not only safe and reliable, but also durable when used in harsh environments such as low temperature, deep freezing, underground, outdoor, flammable, humid, and chemical erosion. It is known as a "permanent insulation material that does not need to be replaced" and is widely used in the petrochemical and coal chemical industries LNG、 Thermal insulation and flue lining anti-corrosion engineering for pharmaceuticals, underground engineering, shipbuilding, national defense and military industry, as well as sound insulation, fire prevention, thermal insulation, anti-corrosion and moisture-proof facilities for theaters, film and television halls, subways, tunnels, conference halls, shopping malls, exhibition halls, waiting rooms, waiting rooms, basements and other places. It is a new material for external wall insulation and energy conservation that ensures the use of insulation, sound insulation, fire prevention, moisture prevention, corrosion prevention, and rodent infestation prevention in buildings, while also being harmless to human health. It is a green, environmentally friendly, and energy-saving new material actively promoted by the Ministry of Construction throughout the country.

Foam glass
Foam glass
Foam glass

Key Features

(1) Fire prevention, environmental protection, and thermal insulation

A1 Class non-combustible material, categorized as fire-resistant material, eco-friendly material and thermal insulation material.

(2) Long service life

Inorganic glass-based thermal insulation material featuring excellent durability, weather resistance, corrosion resistance, rodent resistance and chemical stability. It will not soften, rust, decay, mildew or age. It boasts a long service life and stable energy-saving performance, known as "permanent thermal insulation material free from replacement".

(3) Excellent dimensional stability

Formed by high-temperature foaming, it achieves outstanding dimensional stability with low linear expansion coefficient, free from deformation and cracking.

(4) Superior thermal insulation performance, durability and stability

With glass as substrate, it features extremely low water absorption (volumetric water absorption <0.5%). Closed internal cells eliminate capillary action, making it nearly non-hygroscopic (water vapor permeability coefficient close to zero). It maintains lasting reliable thermal insulation effect together with optimum waterproof and moisture-proof properties; thermal insulation performance will not degrade over time.

(5) High strength with low bulk density

At an apparent density of 140~180kg/m3, the average compressive strength and flexural strength reaches 0.5~1.5MPa. Among thermal insulation materials with average thermal conductivity around 0.056W/(m·K), foam glass delivers the highest strength, making it the optimal energy-saving and eco-friendly material with low thermal conductivity and high mechanical strength.

(6) Wide operating temperature range

Applicable within temperature range from -268 ℃ to +480 ℃, resistant to both high temperature and extreme freezing. Suitable for harsh working conditions such as high temperature, deep cryogenic cooling, constant temperature & constant humidity environments.

(7) Easy installation & construction

Easy to cut and machine for convenient construction; non-toxic, harmless, safe and environmentally friendly.


Table 1 (YH Foam Glass Technical Standard Grades)

Acceptance Limits for Thermal Insulation Products


Density and compressive strength shall be tested in accordance with standard JC/T647-2014

Foam Glass Thermal Insulation Product Grade

Average Nominal Density of Specimen

Compressive Strength

Average Value

Specified Minimum Value

kg/m3 kPa kg/m3 kPa Remarks
YH120 120 ± 10 650 125 ≥500 Class I
YH160 150 ± 10 900 150 ≥500 Class II
YH-180 170 ± 10 1200 170 ≥600 Class III
YH-200 ≥181 1500 190 ≥800 Class IV


Thermal Conductivity

25℃ (W/m·K). Tested according to standard JC/T647-2014

Foam Glass Thermal Insulation Product Grade Maximum Specified Thermal Conductivity of Product Re-test Thermal Conductivity (Single Specimen Measurement Value) Average Thermal Conductivity Remarks
YH120 ≤0.045 0.043 0.044 Class I
YH160 ≤0.058 0.051 0.055 Class II
YH180 ≤0.062 0.058 0.060 Class III
YH200 ≤0.068 0.060 0.065 Class IV


Effective Thickness

All Grades of Foam Glass Thermal Insulation Products 40mm 50mm 60mm 70mm 80mm 90mm
100mm 110mm 120mm 130mm 140mm 180mm

Note:1000kPa=1.0N/mm2


Table 2 (YH Foam Glass Technical Standard Grades)

Acceptance Limits for Thermal Insulation Products


Density and compressive strength are tested according to ASTM C552 standard

Foam Glass Thermal Insulation Product Grade

Average Nominal Density of Specimen

Compressive Strength

Average Value

Specified Minimum Value

kg/m3 kPa kg/m3 kPa Remarks
YH60A ≥98 500 100 ≥414 ASTM
YH80A ≥102 600 107 ≥552 ASTM
YH100A ≥110 700 115 ≥689 ASTM
YH120A ≥119 900 125 ≥827 ASTM
YH140A ≥128 1000 133 ≥965 ASTM
YH160A ≥136 1200 150 ≥1103 ASTM
YH240A ≥170 1700 185 ≥1655 ASTM


Thermal Conductivity

-46℃ (W/m·K). Tested according to ASTM C552 standard

Foam Glass Thermal Insulation Product Grade Maximum Specified Thermal Conductivity of Product Re-test Thermal Conductivity (Single Specimen Measurement Value) Average Thermal Conductivity Remarks
YH60A ≤0.035 0.033 0.034 ASTM
YH80A ≤0.036 0.035 0.035 ASTM
YH100A ≤0.037 0.037 0.037 ASTM
YH120A ≤0.040 0.039 0.039 ASTM
YH140A ≤0.040 0.040 0.040 ASTM
YH160A ≤0.042 0.041 0.042 ASTM
YH240A ≤0.050 0.049 0.050 ASTM


Effective Thickness

All Grades of Foam Glass Thermal Insulation Products 40mm 50mm 60mm 70mm 80mm 90mm
100mm 110mm 120mm 130mm 140mm 180mm

© 2026 Zhejiang Yahong Industrial Co., Ltd    

WeChat QR