HTS40 F13-12K
Grade · default condition
F13-12K = hTS40 F13 12K
Use the 800 tex 12K tow with F13 epoxy-compatible sizing as the general industrial grade for winding, pultrusion, weaving and prepreg at 4300 MPa and 240 GPa.
Values for the F13-12K condition
Other HTS40 grades and fills
HTS40 is listed in 5 conditions; see the grade overview at HTS40.
Compare all 5 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
HTS40 / epoxy UD laminate, Vf ≈ 60% | Reference these cured 0° unidirectional laminate values at Vf ≈ 60 % directly in structural design: 2400 MPa, 142 GPa and Tg 130 °C, with epoxy limiting service to 110 °C. | — | 2,400 | 1.6 | — |
F13-12KDefaultThis page HTS40 F13 12K | Use the 800 tex 12K tow with F13 epoxy-compatible sizing as the general industrial grade for winding, pultrusion, weaving and prepreg at 4300 MPa and 240 GPa. | — | 4,300 | 1.8 | — |
HTS40 F13 24K | Choose the 1600 tex 24K heavy tow for lower cost and higher deposition rates in winding, pultrusion and heavy fabrics; the coarser tow limits thin-ply and fine-weave work. | — | 4,300 | 1.8 | — |
HTS40 E13 3K | Pick the 200 tex 3K tow with E13 epoxy sizing for fine plain and twill fabrics, cosmetic surfaces and thin-wall laminates, accepting more tows per width and slower lay-up. | — | 4,300 | 1.8 | — |
HTS40 E13 6K | Use the 400 tex 6K tow with E13 epoxy sizing as the intermediate fabric and prepreg option, balancing surface appearance against draping and lay-up efficiency. | — | 4,300 | 1.8 | — |
What is HTS40 F13-12K?
HTS40 F13-12K is HTS40 in the F13-12K grade — use the 800 tex 12K tow with F13 epoxy-compatible sizing as the general industrial grade for winding, pultrusion, weaving and prepreg at 4300 MPa and 240 GPa. HTS40 F13-12K has a tensile strength of 4,300 MPa (624 ksi), stronger than 91% of composite grades. Elongation at break is 1.8% and the elastic modulus is 240 GPa (34.8 Msi). HTS40 F13-12K has a density of 1.77 g/cm³ (0.0639 lb/in³), heavier than 51% of composite grades.
Advantages
- Good corrosion resistance — 92/100, better than 94% of composite grades
- Stiff — 240 GPa (34.8 Msi), better than 85% of composite grades
- Good UV / weathering resistance — 95/100, better than 78% of composite grades
Limitations
- Difficult to machine — 20/100, worse than 77% of composite grades
HTS40 F13-12K properties
Typical room-temperature values for HTS40 F13-12K; 13 are specific to this condition. Other listed values are HTS40 reference data and may not represent this condition. Bars are the position among composite grades.
Physical1
HTS40 F13-12K has a density of 1.77 g/cm³ (0.0639 lb/in³), heavier than 51% of composite grades.
Mechanical8
HTS40 F13-12K has a tensile strength of 4,300 MPa (624 ksi), stronger than 91% of composite grades. Elongation at break is 1.8% and the elastic modulus is 240 GPa (34.8 Msi).
Thermal5
HTS40 F13-12K is rated for continuous service to 350°C (662 °F). It conducts heat at 10 W/m·K (5.78 BTU/hr·ft·°F), better than 72% of composite grades. Thermal expansion is -0.1 µm/m·K (-0.0556 µin/in·°F).
Electrical1
HTS40 F13-12K has an electrical resistivity of 1.6×10⁻⁵ Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (92/100), better than 94% of composite grades. UV resistance is excellent.
Sustainability4
Producing a kilogram of HTS40 F13-12K takes about 340 MJ of energy and emits 24 kg of CO₂ — more than 74% of composite grades. Typical recycled content is 0%.
Manufacturability1
HTS40 F13-12K's machinability is poor (20/100, worse than 77% of composite grades).
Common Calculations4
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with HTS40 F13-12K
Is HTS40 easy to machine?
After cure, use PCD or diamond-coated tooling and diamond wheels at high speed and small feed with dust extraction to avoid delamination and burrs. The dust is conductive, so guard against short circuits and use spark-safe collection.
Can HTS40 be welded?
Not weldable; join by adhesive bonding or mechanical fasteners. Use titanium or stainless fasteners with an isolating layer to prevent galvanic corrosion.
Can HTS40 be formed, bent or molded?
Suits wet and dry filament winding, pultrusion, RTM, braiding and autoclave-cured prepreg. F13 and E13 sizings wet out well in epoxy; thermoplastic matrices require a matrix-specific sizing.
What surface finishes work on HTS40?
Weave texture is normally covered with a topcoat or gel coat. Sand wet to control dust, and add a UV-blocking coating on exposed parts to protect the resin rather than the fiber.
HTS40 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 |
|---|---|---|
| Nresidual nitrogen | 2 – 5 | 3.5 |
| epoxy sizingF13/E13 sizing content | 1 – 1.6 | 1.3 |
| Ccarbonization product of PAN precursor | ≥ 93 (balance) | — |
HTS40 F13-12K — frequently asked
What is HTS40 F13-12K used for?
HTS40 F13-12K is typically used for automotive structural parts, wind energy, sporting goods and industrial tooling. In short: T700-class high tenacity; industrial-volume standard modulus; wide sizing and tow range.
What is the tensile strength of HTS40 F13-12K?
HTS40 F13-12K has a typical tensile strength of 4,300 MPa (624 ksi) — stronger than 91% of composite grades. Strength varies by condition: see the 5 listed tempers.
Is HTS40 F13-12K easy to machine?
Not especially — machinability is rated poor (20/100, worse than 77% of composite grades). After cure, use PCD or diamond-coated tooling and diamond wheels at high speed and small feed with dust extraction to avoid delamination and burrs. The dust is conductive, so guard against short circuits and use spark-safe collection.
Can HTS40 F13-12K be welded?
Not weldable; join by adhesive bonding or mechanical fasteners. Use titanium or stainless fasteners with an isolating layer to prevent galvanic corrosion.
What surface finishes work on HTS40 F13-12K?
Weave texture is normally covered with a topcoat or gel coat. Sand wet to control dust, and add a UV-blocking coating on exposed parts to protect the resin rather than the fiber.
Can HTS40 F13-12K be formed, bent or molded?
Suits wet and dry filament winding, pultrusion, RTM, braiding and autoclave-cured prepreg. F13 and E13 sizings wet out well in epoxy; thermoplastic matrices require a matrix-specific sizing.
What is the maximum service temperature of HTS40 F13-12K?
HTS40 F13-12K is rated for continuous use to about 350°C (662 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- Tenax-E HTS40 filament yarn datasheet — Teijin Carbon (Toho Tenax) (2022)
- ASM Engineered Materials Handbook Vol.1: Composites — ASM International (1987)
- MMPDS/CMH-17 typical carbon/epoxy UD lamina data — CMH-17 (2017)
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.