GB/T 10801.1 Type II
GB/T 10801.1 Type II is a moulded EPS insulation board one class above Type I, at 0.021 g/cm³ density and 0.038 W/m·K thermal conductivity.
Reference datasheet — GB/T 10801.1 Type II is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
GB/T 10801.1 Type II grades and fills
GB/T 10801.1 Type II is supplied in 6 conditions, soft to hard.
Compare all 6 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Nominal 20 kg/m³ | Use the 20 kg/m³ economy density that just meets the class limit for wall insulation and lightly loaded fill; strength and stiffness are the lowest in the range. | 0.22 | 6.5 | ||
Flame retardant, GB 8624 B1(B) grade | Choose this flame-retardant grade with oxygen index of at least 30% when a thin-render external wall insulation system requires the GB 8624 B1(B) class; service limit is 75 °C. | 0.24 | 6 | ||
Graphite-enhanced EPS (grey SEPS) | Choose the grey graphite-filled foam when ultra-low-energy buildings demand 10-15% lower thermal conductivity at the same 21 kg/m³ density, at added material cost. | 0.24 | 5.5 | ||
Flame retardant, GB 8624 B2(C/D) grade | Pick the low-cost flame-retardant tier for locations with lower fire-class requirements, for packaging and for roof sandwich cores. | 0.25 | 6 | ||
Packaging / shape-moulded grade | Choose shape-moulded packaging parts when resilience and repeated impact energy absorption drive the design rather than long-term insulation performance. | 0.25 | 7 | ||
Nominal 25 kg/m³ | Pick the 25 kg/m³ upper density when load capacity and dimensional stability matter, as in floor levelling layers, roof slope forming and heavy packaging. | 0.3 | 6 |
Supply forms, finishes and certifications
Ways GB/T 10801.1 Type II is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
STDDefault | Standard white EPS board, Type II | Standard supply |
What is GB/T 10801.1 Type II?
GB/T 10801.1 Type II is a moulded EPS insulation board one class above Type I, at 0.021 g/cm³ density and 0.038 W/m·K thermal conductivity. It is the common external-wall-insulation and roof board where higher compressive strength and better dimensional stability than Type I are needed, supplied as block-cut boards in B1 and B2 flame-retardant grades, graphite-loaded (grey) versions and D20/D25 density variants, plus a packaging grade. Limits are solvent and UV attack, low service temperature and the need for a mortar or panel facing; Type III is the next step for cold-store and panel cores. GB/T 10801.1 Type II has a density of 0.02 g/cm³ (7.59×10⁻⁴ lb/in³), lighter than 97% of polymer grades. Its glass-transition temperature is 100°C (212 °F). GB/T 10801.1 Type II has a tensile strength of 0.25 MPa (0.0363 ksi), weaker than 95% of polymer grades. Elongation at break is 6% and the elastic modulus is 0 GPa (6.53×10⁻⁴ Msi).
What is GB/T 10801.1 Type II used for?
- EIFS wall insulation
- Roof insulation
- Cold storage insulation
Advantages
- Lightweight — 0.02 g/cm³ (7.59×10⁻⁴ lb/in³), better than 97% of polymer grades
- Easy to machine — 90/100, better than 95% of polymer grades
- Low, predictable mold shrinkage — 0.45%, better than 77% of polymer grades
- Low embodied carbon — 3.4 kg CO₂/kg, better than 76% of polymer grades
Limitations
- Low stiffness — 0 GPa (6.53×10⁻⁴ Msi), worse than 90% of polymer grades
- Poor heat conductor — 0.04 W/m·K (0.022 BTU/hr·ft·°F), worse than 90% of polymer grades
- Degrades in UV without stabilisers — 20/100, worse than 88% of polymer grades
GB/T 10801.1 Type II properties
Typical room-temperature values; bars are the position among polymer grades.
Physical3
GB/T 10801.1 Type II has a density of 0.02 g/cm³ (7.59×10⁻⁴ lb/in³), lighter than 97% of polymer grades. Its glass-transition temperature is 100°C (212 °F).
Mechanical8
GB/T 10801.1 Type II has a tensile strength of 0.25 MPa (0.0363 ksi), weaker than 95% of polymer grades. Elongation at break is 6% and the elastic modulus is 0 GPa (6.53×10⁻⁴ Msi).
Thermal9
GB/T 10801.1 Type II is rated for continuous service to 75°C (167 °F). It conducts heat at 0.04 W/m·K (0.022 BTU/hr·ft·°F), worse than 90% of polymer grades. Thermal expansion is 65 µm/m·K (36.1 µin/in·°F).
Electrical2
Chemical & Environmental3
Corrosion resistance is very good (75/100), worse than 66% of polymer grades. UV resistance is poor.
Sustainability4
Producing a kilogram of GB/T 10801.1 Type II takes about 100 MJ of energy and emits 3.4 kg of CO₂ — less than 61% of polymer grades. Typical recycled content is 5%.
Manufacturability5
GB/T 10801.1 Type II's machinability is excellent (90/100, better than 95% of polymer grades); weldability poor (25/100); formability fair (40/100).
Common Calculations4
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the polymer family
Yield strength against density for every polymer grade FabDigit runs. GB/T 10801.1 Type II is highlighted; hover a dot for its name, or open the interactive family chart.
Working with GB/T 10801.1 Type II
Is GB/T 10801.1 Type II easy to machine?
Hot-wire cutting is best — smooth faces and no dust; band saws and utility knives also work. Avoid high-speed tooling that melts the cut face through friction.
Can GB/T 10801.1 Type II be welded?
Not fusion welded. Join sheets with a hot-air rod or dedicated EPS adhesives (polyurethane adhesive, cement-based bonding mortar); solvent-based adhesives dissolve the foam.
Can GB/T 10801.1 Type II be formed, bent or molded?
Pre-expansion, aging, then steam moulding at 0.05–0.12 MPa steam into large blocks, followed by hot-wire cutting into board. Moulding shrinkage is about 0.3–0.6%, so age blocks fully before cutting to stabilise dimensions.
GB/T 10801.1 Type II chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| pentane (blowing agent, residual)residual pentane after curing, decreases with ageing | 0.3 – 5 | 2 |
| brominated flame retardant (polymeric FRpresent only in flame-retardant B1/B2 types | 0.3 – 1.2 | 0.7 |
| nucleating agent / lubricant / antistati | 0.1 – 1 | 0.3 |
| graphiteonly graphite-modified grey board contains 1–4% | 0 – 4 | 0 |
| polystyrene (PS)expandable polystyrene bead matrix | ≥ 90 (balance) |
What surface finishes work on GB/T 10801.1 Type II?
Face with crack-resistant mortar plus mesh cloth, or with a cement-based or coated finish. Do not leave exposed to UV and do not use solvent-based coatings.
How much does GB/T 10801.1 Type II cost?
GB/T 10801.1 Type II is a standard-cost polymer ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
GB/T 10801.1 Type II — frequently asked
What is GB/T 10801.1 Type II used for?
GB/T 10801.1 Type II is typically used for EIFS wall insulation, roof insulation and cold storage insulation. In short: standard EIFS-grade EPS; graphite (grey) option available; stronger than Type I.
What is the tensile strength of GB/T 10801.1 Type II?
GB/T 10801.1 Type II has a typical tensile strength of 0.25 MPa (0.0363 ksi) — weaker than 95% of polymer grades. Strength varies by condition: see the 6 listed tempers.
Is GB/T 10801.1 Type II easy to machine?
Yes — machinability is rated excellent (90/100, better than 95% of polymer grades). Hot-wire cutting is best — smooth faces and no dust; band saws and utility knives also work. Avoid high-speed tooling that melts the cut face through friction.
Can GB/T 10801.1 Type II be welded?
Not readily — weldability is rated poor (25/100). Not fusion welded. Join sheets with a hot-air rod or dedicated EPS adhesives (polyurethane adhesive, cement-based bonding mortar); solvent-based adhesives dissolve the foam.
What surface finishes work on GB/T 10801.1 Type II?
Face with crack-resistant mortar plus mesh cloth, or with a cement-based or coated finish. Do not leave exposed to UV and do not use solvent-based coatings.
Can GB/T 10801.1 Type II be formed, bent or molded?
Pre-expansion, aging, then steam moulding at 0.05–0.12 MPa steam into large blocks, followed by hot-wire cutting into board. Moulding shrinkage is about 0.3–0.6%, so age blocks fully before cutting to stabilise dimensions.
What is the maximum service temperature of GB/T 10801.1 Type II?
GB/T 10801.1 Type II is rated for continuous use to about 75°C (167 °F), and briefly to 85°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does GB/T 10801.1 Type II cost?
GB/T 10801.1 Type II is a standard-cost polymer ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- Handbook of Polymeric Foams and Foam Technology — Hanser (2004)
- CES/ICE embodied energy & carbon data for EPS — Granta / University of Bath (2019)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.