EVA Foam Sheet (Footwear Grade) C65
Hardness band
GB QB/T 2199
C65 = firm high-density foam
Pick for stability blocks, support bars, safety-shoe midsoles and outsole pads where Asker C 60–70 gives stiff, wear-resistant support; cushioning drops and weight rises to 0.26 g/cm³.
Values for the C65 condition
Other EVA Foam Sheet (Footwear Grade) grades and fills
EVA Foam Sheet (Footwear Grade) is listed in 10 conditions; see the grade overview at EVA Foam Sheet (Footwear Grade).
Compare all 10 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Ultra-soft low-density foam | Pick for insoles, slippers and comfort cushioning layers where Asker C 38–45 gives the lightest, softest feel; support is poor and the foam collapses under sustained load. | — | 1 | 220 | 28 Shore A |
Recycled-content EVA foam | Use to cut cost and carbon footprint with 10–30 % factory-offcut regrind, accepting less uniform cell structure, lower rebound at 1.6 MPa and harder colour-consistency control. | — | 2 | 190 | 13 Shore D |
Soft midsole foam | Choose the soft Asker C 45–52 sheet for running-shoe midsole cushioning with good rebound and underfoot feel; durability is only moderate at 0.15 g/cm³. | — | 2 | 260 | 10 Shore D |
Flame-retardant EVA foam sheet | Specify for safety footwear, rail transit parts and packaging liners using halogen-free ATH/MDH plus intumescent or brominated systems; density rises to 0.28 g/cm³ while strength falls to 1.8 MPa. | — | 2 | 150 | 18 Shore D |
C55Default Standard footwear midsole sheet | Use as the general-purpose midsole and buffing-board sheet at Asker C 52–58, balancing cushioning, support and durability with good secondary compression-moulding behaviour. | — | 2 | 250 | 12 Shore D |
Hot rolled | Choose for mid- to high-end running midsoles needing high rebound and collapse resistance: POE/OBC modification or supercritical N₂/CO₂ physical foaming gives 0.16 g/cm³ at higher cost. | — | 2 | 300 | 9 Shore D |
Phylon | Choose for athletic midsoles needing a dense skin and tight dimensional accuracy: cut blanks are compression-moulded and secondary-foamed, giving 0.22 g/cm³, 2.6 MPa and low finished weight. | — | 3 | 230 | 15 Shore D |
Injection Phylon | Use when throughput matters and skiving scrap must be eliminated: the foam is injection-moulded directly to shape, trading a higher 0.25 g/cm³ density plus poorer surface texture and rebound. | — | 3 | 210 | 17 Shore D |
C65This page Firm high-density foam | Pick for stability blocks, support bars, safety-shoe midsoles and outsole pads where Asker C 60–70 gives stiff, wear-resistant support; cushioning drops and weight rises to 0.26 g/cm³. | — | 3 | 200 | 52 Shore A |
EVA/rubber blend foam | Pick for one-piece midsole/outsole units and slipper soles: SBR/BR or reclaimed rubber raises abrasion and tear resistance to 3.5 MPa, at 0.32 g/cm³ and higher hardness and weight. | — | 4 | 250 | 20 Shore D |
What is EVA Foam Sheet (Footwear Grade) C65?
EVA Foam Sheet (Footwear Grade) C65 is EVA Foam Sheet (Footwear Grade) heat treated to C65 — pick for stability blocks, support bars, safety-shoe midsoles and outsole pads where Asker C 60–70 gives stiff, wear-resistant support; cushioning drops and weight rises to 0.26 g/cm³. EVA Foam Sheet (Footwear Grade) C65 has a tensile strength of 3 MPa (0.435 ksi), weaker than 83% of polymer grades. Elongation at break is 200% and the elastic modulus is 0.01 GPa (0.0012 Msi). EVA Foam Sheet (Footwear Grade) C65 has a density of 0.26 g/cm³ (0.0094 lb/in³), lighter than 85% of polymer grades. Its glass-transition temperature is -30°C (-22 °F). C55 is the default condition FabDigit quotes; C65 is available on request or by drawing note.
Advantages
- Easy to machine — 88/100, better than 92% of polymer grades
- Forms and bends easily — 90/100, better than 91% of polymer grades
- Lightweight — 0.26 g/cm³ (0.0094 lb/in³), better than 85% of polymer grades
- Low embodied carbon — 2.9 kg CO₂/kg, better than 85% of polymer grades
- Good corrosion resistance — 90/100, better than 82% of polymer grades
Limitations
- High mold shrinkage — 3%, worse than 97% of polymer grades
- Poor heat conductor — 0.06 W/m·K (0.0318 BTU/hr·ft·°F), worse than 84% of polymer grades
- Low stiffness — 0.01 GPa (0.0012 Msi), worse than 82% of polymer grades
- Limited service temperature — 70°C (158 °F), worse than 77% of polymer grades
EVA Foam Sheet (Footwear Grade) C65 properties
Typical room-temperature values for EVA Foam Sheet (Footwear Grade) C65; 10 are specific to this condition. Other listed values are EVA Foam Sheet (Footwear Grade) reference data and may not represent this condition. Bars are the position among polymer grades.
Physical5
EVA Foam Sheet (Footwear Grade) C65 has a density of 0.26 g/cm³ (0.0094 lb/in³), lighter than 85% of polymer grades. Its glass-transition temperature is -30°C (-22 °F).
Mechanical11
EVA Foam Sheet (Footwear Grade) C65 has a tensile strength of 3 MPa (0.435 ksi), weaker than 83% of polymer grades. Elongation at break is 200% and the elastic modulus is 0.01 GPa (0.0012 Msi).
Thermal8
EVA Foam Sheet (Footwear Grade) C65 is rated for continuous service to 70°C (158 °F). It conducts heat at 0.06 W/m·K (0.0318 BTU/hr·ft·°F), worse than 84% of polymer grades. Thermal expansion is 200 µm/m·K (111.1 µin/in·°F).
Electrical3
EVA Foam Sheet (Footwear Grade) C65 has an electrical resistivity of 1×10¹³ Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (90/100), better than 82% of polymer grades. UV resistance is fair.
Sustainability4
Producing a kilogram of EVA Foam Sheet (Footwear Grade) C65 takes about 82 MJ of energy and emits 2.9 kg of CO₂ — less than 83% of polymer grades. Typical recycled content is 10%.
Manufacturability7
EVA Foam Sheet (Footwear Grade) C65's machinability is excellent (88/100, better than 92% of polymer grades); weldability good (60/100); formability excellent (90/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with EVA Foam Sheet (Footwear Grade) C65
Is EVA Foam Sheet (Footwear Grade) easy to machine?
Blade skiving, hydraulic die cutting, waterjet and CNC milling are all straightforward. Use sharp thin edges with adequate cooling to avoid friction-melted edges and compression distortion.
Can EVA Foam Sheet (Footwear Grade) be welded?
Hot-plate, hot-air or high-frequency welding is possible when polar additives are present, but production joints are normally neoprene or PU adhesive. Prime with UV, plasma or chemical treatment to raise surface energy before bonding.
Can EVA Foam Sheet (Footwear Grade) be formed, bent or molded?
Primary crosslinked compression foaming runs at 160-180 C, followed by skiving after cooling. Secondary hot pressing (Phylon) sets shape at about 150-170 C with a 2-5 % shrinkage allowance; injection foaming uses melt temperatures of about 120-150 C.
What surface finishes work on EVA Foam Sheet (Footwear Grade)?
Can be sanded, flame or wheel trimmed, screen printed, water-transfer printed and heat-transfer decorated. Opened surface cells pick up dirt, so exposed faces are usually painted or laminated with rubber or TPU sheet for wear resistance.
EVA Foam Sheet (Footwear Grade) 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 |
|---|---|---|
| vinyl acetate content in EVA (VA)comonomer content; sets softness and resilience | 15 – 28 | 18 |
| LDPE / POE / OBC modifieradjusts resilience, tear resistance and shrinkage | 0 – 30 | 12 |
| azodicarbonamide (AC )chemical blowing agent; loading sets density | 1 – 5 | 2.5 |
| dicumyl peroxide (DCP )peroxide crosslinking | 0.4 – 1.2 | 0.8 |
| ZnOactivator; lowers AC decomposition temperature | 0.5 – 2.5 | 1.5 |
| stearic acidlubricant and co-activator | 0.3 – 1.5 | 0.8 |
| CaCO3 / talc fillerreduces cost, adjusts hardness | 0 – 20 | 8 |
| pigment / masterbatchcoloring | 0.2 – 2 | 0.8 |
| EVA copolymer ( )base resin, MFI 2-6 g/10min | ≥ 55 (balance) | — |
EVA Foam Sheet (Footwear Grade) C65 — frequently asked
What is EVA Foam Sheet (Footwear Grade) C65 used for?
EVA Foam Sheet (Footwear Grade) C65 is typically used for shoe midsoles and insoles, sports equipment padding, foam mats/puzzle tiles, protective case foam inserts and orthopedic insoles. In short: standard footwear midsole foam; highest elongation in family; low 65 C service ceiling.
What is the tensile strength of EVA Foam Sheet (Footwear Grade) C65?
EVA Foam Sheet (Footwear Grade) C65 has a typical tensile strength of 3 MPa (0.435 ksi) — weaker than 83% of polymer grades. Strength varies by condition: see the 10 listed tempers.
Is EVA Foam Sheet (Footwear Grade) C65 easy to machine?
Yes — machinability is rated excellent (88/100, better than 92% of polymer grades). Blade skiving, hydraulic die cutting, waterjet and CNC milling are all straightforward. Use sharp thin edges with adequate cooling to avoid friction-melted edges and compression distortion.
Can EVA Foam Sheet (Footwear Grade) C65 be welded?
Yes — weldability is rated good (60/100). Hot-plate, hot-air or high-frequency welding is possible when polar additives are present, but production joints are normally neoprene or PU adhesive. Prime with UV, plasma or chemical treatment to raise surface energy before bonding.
What surface finishes work on EVA Foam Sheet (Footwear Grade) C65?
Can be sanded, flame or wheel trimmed, screen printed, water-transfer printed and heat-transfer decorated. Opened surface cells pick up dirt, so exposed faces are usually painted or laminated with rubber or TPU sheet for wear resistance.
Can EVA Foam Sheet (Footwear Grade) C65 be formed, bent or molded?
Primary crosslinked compression foaming runs at 160-180 C, followed by skiving after cooling. Secondary hot pressing (Phylon) sets shape at about 150-170 C with a 2-5 % shrinkage allowance; injection foaming uses melt temperatures of about 120-150 C.
What is the maximum service temperature of EVA Foam Sheet (Footwear Grade) C65?
EVA Foam Sheet (Footwear Grade) C65 is rated for continuous use to about 70°C (158 °F), and briefly to 85°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- ASTM D3575 Standard Test Methods for Flexible Cellular Materials Made from Olefin Polymers — ASTM International (2020)
- ASTM D2240 / ISO 868 Durometer Hardness — ASTM / ISO (2021)
- EVA copolymer resin datasheets (VA 15–28%) — Hanwha / Formosa Plastics / (2023)
- Handbook of Polymeric Foams and Foam Technology — Hanser (2004)
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.