XPS200 GR (/)
Additive grade
GB GB/T 10801.2 XPS200
Choose the graphite-modified grey board when the insulation layer must stay thin: infrared absorbers reduce radiant heat transfer, giving 0.027 W/m·K at the same thickness.
Values for the GR condition
Other XPS200 grades and fills
XPS200 is listed in 4 conditions; see the grade overview at XPS200.
Compare all 4 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
CO₂-blown, HFC-free grade | Use the CO₂/HFO-blown board to meet environmental and green building material requirements in place of HCFC/HFC blowing agents, accepting slightly higher long-term conductivity of 0.032 W/m·K. | — | 0.4 | 2.5 | — |
GRThis page / | Choose the graphite-modified grey board when the insulation layer must stay thin: infrared absorbers reduce radiant heat transfer, giving 0.027 W/m·K at the same thickness. | — | 0.42 | 2.2 | — |
GB 8624 B1B-s1,d0 | Use where fire acceptance applies, such as external wall insulation systems; the flame-retardant formulation meets GB 8624 B1 (B-s1,d0) at a density of 32 kg/m³. | — | 0.43 | 2.5 | — |
/ | Choose the underfloor-heating board with foil facing or moulded studs for radiant floor screed layers, prioritising compressive load capacity and long-term dimensional stability up to 70 °C. | — | 0.45 | 2.5 | — |
What is XPS200 GR?
XPS200 GR is XPS200 in the GR grade — choose the graphite-modified grey board when the insulation layer must stay thin: infrared absorbers reduce radiant heat transfer, giving 0.027 W/m·K at the same thickness. XPS200 GR has a tensile strength of 0.42 MPa (0.0609 ksi), weaker than 91% of polymer grades. The elastic modulus is 0.01 GPa (0.0017 Msi). XPS200 GR has a density of 0.03 g/cm³ (0.0011 lb/in³), lighter than 94% of polymer grades. Its glass-transition temperature is 100°C (212 °F).
Advantages
- Lightweight — 0.03 g/cm³ (0.0011 lb/in³), better than 94% of polymer grades
- Easy to machine — 85/100, better than 88% of polymer grades
Limitations
- Poor heat conductor — 0.03 W/m·K (0.0156 BTU/hr·ft·°F), worse than 99% of polymer grades
- Degrades in UV without stabilisers — 15/100, worse than 95% of polymer grades
- Limited formability — 10/100, worse than 87% of polymer grades
- Low stiffness — 0.01 GPa (0.0017 Msi), worse than 79% of polymer grades
XPS200 GR properties
Typical room-temperature values for XPS200 GR; 18 are specific to this condition. Other listed values are XPS200 reference data and may not represent this condition. Bars are the position among polymer grades.
Physical4
XPS200 GR has a density of 0.03 g/cm³ (0.0011 lb/in³), lighter than 94% of polymer grades. Its glass-transition temperature is 100°C (212 °F).
Mechanical8
XPS200 GR has a tensile strength of 0.42 MPa (0.0609 ksi), weaker than 91% of polymer grades. The elastic modulus is 0.01 GPa (0.0017 Msi).
Thermal8
XPS200 GR is rated for continuous service to 75°C (167 °F). It conducts heat at 0.03 W/m·K (0.0156 BTU/hr·ft·°F), worse than 99% of polymer grades. Thermal expansion is 70 µm/m·K (38.9 µin/in·°F).
Electrical4
XPS200 GR has an electrical resistivity of 1×10¹² Ω·m.
Chemical & Environmental2
UV resistance is poor.
Sustainability3
Producing a kilogram of XPS200 GR takes about 100 MJ of energy and emits 4.5 kg of CO₂ — less than 61% of polymer grades. Typical recycled content is 15%.
Manufacturability2
XPS200 GR's machinability is excellent (85/100, better than 88% of polymer grades); formability not recommended (10/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with XPS200 GR
Is XPS200 easy to machine?
Hot-wire cutting or a fine-tooth band saw or circular saw is sufficient; keep feed fast to avoid melted edges. CNC routing can produce profiles but needs dust extraction, as the static-charged chips scatter easily.
Can XPS200 be welded?
Not fusion welded. Close board joints with dedicated polyurethane foam adhesive or water-based adhesive, or lap and stagger the joints; solvent-based adhesives must not be used.
Can XPS200 be formed, bent or molded?
Produced by extrusion foaming (extruder with blowing-agent injection and sizing rolls) as rigid board. On site it can only be cut — no cold bending or thermoforming.
What surface finishes work on XPS200?
The extrusion skin must be planed off and the surface grooved, scratched or treated with a bonding primer before plaster or adhesive is applied. The finished surface must be covered with render mortar, cement board or a coating to prevent UV aging and flame contact.
XPS200 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 |
|---|---|---|
| blowing agent residue (CO2 / HFO / HFC)gas in closed cells, partly replaced by air over time | 1 – 4 | 2.5 |
| flame retardant (polymeric brominated / upper end of range for fire class B1 | 0.5 – 3 | 1.5 |
| talc (nucleating agent) | 0.2 – 1 | 0.5 |
| pigment / IR absorber (graphite, carbon up to 1-2% in graphite-modified grades | 0 – 2 | 0.3 |
| polystyrene (styrene homopolymer)GPPS matrix, often contains recycled PS | ≥ 90 (balance) | — |
XPS200 GR — frequently asked
What is XPS200 GR used for?
XPS200 GR is typically used for exterior wall insulation boards, inverted (protected membrane) roof insulation, underfloor heating and floor screed insulation, foundation and below-grade wall insulation, cold storage floor insulation and road and railway frost protection layers. In short: 200 kPa XPS board; load-bearing XPS grade; lower conductivity than EPS.
What is the tensile strength of XPS200 GR?
XPS200 GR has a typical tensile strength of 0.42 MPa (0.0609 ksi) — weaker than 91% of polymer grades. Strength varies by condition: see the 4 listed tempers.
Is XPS200 GR easy to machine?
Yes — machinability is rated excellent (85/100, better than 88% of polymer grades). Hot-wire cutting or a fine-tooth band saw or circular saw is sufficient; keep feed fast to avoid melted edges. CNC routing can produce profiles but needs dust extraction, as the static-charged chips scatter easily.
Can XPS200 GR be welded?
Not fusion welded. Close board joints with dedicated polyurethane foam adhesive or water-based adhesive, or lap and stagger the joints; solvent-based adhesives must not be used.
What surface finishes work on XPS200 GR?
The extrusion skin must be planed off and the surface grooved, scratched or treated with a bonding primer before plaster or adhesive is applied. The finished surface must be covered with render mortar, cement board or a coating to prevent UV aging and flame contact.
Can XPS200 GR be formed, bent or molded?
Produced by extrusion foaming (extruder with blowing-agent injection and sizing rolls) as rigid board. On site it can only be cut — no cold bending or thermoforming.
What is the maximum service temperature of XPS200 GR?
XPS200 GR is rated for continuous use to about 75°C (167 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- EN 13164 Thermal insulation products — Factory made XPS products — CEN (2015)
- Materials and the Environment (embodied energy of polymer foams) — Ashby / Butterworth-Heinemann (2013)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.