Jiangsu Xinfuda ABS H1110GF is a 10% glass-fibre-reinforced acrylonitrile-butadiene-styrene injection-moulding grade supplied by Jiangsu Xinfuda New Material Technology Co., Ltd. The grade is positioned for dimensionally constrained housings, appliance bearer frames, and structural brackets in which unfilled ABS lacks the required flexural modulus and creep resistance. Manufacturer-published data for this specific configuration remain limited outside the supplier-controlled datasheet; the processing and performance boundaries discussed below are therefore based on ISO and ASTM test methods for equivalent 10% glass-fibre ABS systems and should be verified against the supplier lot certificate for H1110GF before tool release. Under ISO 1133-1:2022 at 220°C and 10 kg, the melt-flow-rate band for this product family is typically 8–15 g/10 min. Nominal density is 1.16 g/cm³ under ISO 1183-1:2019, and glass-fibre content by ash under ISO 3451-1:2019 is controlled in the 9.0–11.0% range. These values separate H1110GF from unfilled ABS, which normally exhibits density below 1.06 g/cm³ and flexural modulus below 2,500 MPa, and from higher-loading glass-filled grades in the 20–30% fibre range that carry greater rigidity but lower flow and higher abrasive wear.

What Limits the Injection Moulding Window for H1110GF?

Drying is the first process boundary. ABS is sufficiently hygroscopic that surface defects and molecular-weight degradation occur if residual moisture exceeds 0.05%. For H1110GF, desiccant drying at 80°C for 2–4 h to a dew point of -30°C or lower is standard pre-treatment. Hopper residence above 8 h at 80°C can shift colour and should be avoided. The melt temperature window at the nozzle is 240–260°C, with the measured melt stream not exceeding 270°C because the butadiene phase begins releasing degradation volatiles and the glass-fibre sizing can break down, producing silver streaks and brown specks. Mould temperature is maintained at 60–80°C; below 50°C the skin freezes before packing pressure decays, increasing sink marks around bosses and ribs. Injection speed is set in the 40–80 mm/s mid-front range to balance glass-fibre orientation against jetting. Packing pressure is normally 60–80% of peak injection pressure, with packing time of 4–6 s for wall sections up to 2.5 mm. Screw L/D should be 20:1 or higher. Open-type non-return valves with clearance below 0.05 mm reduce glass-fibre trapping and screw wear. On a 1,200 kN clamp injection-moulding machine running a two-cavity hot-runner tool, the observed process bottleneck is often gate freeze-off at thin flow leaders rather than barrel plastication.

Because the 10% glass fibre increases melt viscosity relative to unfilled ABS, back pressure is held at 5–10 bar hydraulic to homogenize fibre distribution without breaking fibres. Screw speed is limited to 60–100 rpm; higher speeds generate shear heating and fibre attrition in the compression zone. Fibre attrition can be measured by comparing ash content after plastication with the virgin pellet value. A 1–2% fibre-length reduction is acceptable, but breakage above 4% narrows the flexural modulus response and increases warpage scatter. At the mould, hot-runner manifold temperatures are set 10–20°C above nozzle temperature to avoid local fibre agglomerates at the gate. Valve-gate diameter below 1.5 mm is not recommended for glass-filled ABS because fibre bridging can cause intermittent gate plugging. These parameters form a practical processing envelope narrower than the ±15°C melt window typical of unfilled ABS; H1110GF should be treated as having a ±10°C practical melt-temperature window when surface appearance and weld-line strength are both controlled.

Mechanical loading in dry-as-moulded H1110GF differs from unfilled ABS primarily in flexural modulus and tensile strength, but not in ductility. Under ISO 527-2:2012, tensile strength for a 10% glass-filled ABS grade in this family is usually 58–65 MPa, elongation at break is 3–5%, and flexural modulus under ISO 178:2019 is typically 3,800–4,500 MPa. Notched Charpy impact strength under ISO 179-1:2020 is typically 7–10 kJ/m². These figures are product-class values rather than certified H1110GF lot values, because batch-to-batch changes in sizing and glass-content distribution can shift results by 5–10% relative to the nominal point. The practical structural benefit is that H1110GF can replace a thicker unfilled ABS rib section with a thinner wall, reducing mass while maintaining bending stiffness. However, the low elongation at break means bosses and snap-fits require radii above 0.5 mm and draft angles above 1° to avoid brittle fracture at ejection or assembly.

When H1110GF Replaces Unfilled ABS in Structural Housings, Shrinkage Anisotropy Shifts

Substitution of unfilled ABS with H1110GF in an existing tool is not a drop-in resin change. Glass-fibre orientation parallel to flow reduces longitudinal mould shrinkage to approximately 0.2–0.4%, while transverse shrinkage can remain at 0.4–0.6%. This creates anisotropy greater than unfilled ABS, which typically shrinks 0.4–0.7% nearly isotropically. In a flat rectangular housing with a film gate on one edge, warpage can exceed 0.8 mm across a 200 mm flow length if cooling channels are not re-balanced. Tools converted from unfilled ABS should be re-commissioned with cavity pressure sensors; balanced filling is achieved when peak cavity pressures in each gate remain within 5% of each other. If the original tool has a submarine gate smaller than 1.0 mm, the gate should be enlarged to 1.5–2.0 mm to accommodate fibre bundles. Cooling lines should target a turbulent flow regime with Reynolds number above 10,000; laminar cooling increases differential shrinkage and warpage.

Weld lines in glass-filled ABS are more severe because fibres do not entangle across the flow front. Weld-line tensile strength retention under ISO 527-2:2012 is typically 40–55% of the unwelded value, compared with 60–75% for unfilled ABS. Gate placement must therefore move weld lines away from high-tensile boss bases and snap-fit root radii. If a weld line cannot be relocated, the section should be thickened by 20–30% or a local flow leader added. Mould trials with the H1110GF product class on a 1,200 kN machine show that a rectangular housing requires a 15°C increase in mould temperature and a 10% increase in packing pressure relative to unfilled ABS to maintain equal sink-mark depth. Production-scale behaviour also includes higher screw and barrel wear; nitrided or bimetallic barrels are recommended when cumulative production exceeds 200 t of glass-filled material, and screw diameter loss should be monitored at intervals not exceeding 6 months under continuous operation.

Chemical exposure data for glass-filled ABS in this product class indicate that aromatic and chlorinated solvents cause crazing and surface cracking. Acetone, toluene, and methyl ethyl ketone should be excluded from cleaning and assembly operations. Under ISO 22088-2:2006 constant-strain environmental stress-cracking tests, a 0.5% strain level in air is generally safe for unfilled ABS, but glass-filled ABS can show microcracking at fibre ends in the same strain range when exposed to isopropyl alcohol. For H1110GF, published data for specific solvent compatibility is limited; end-use validation should follow ISO 22088-2:2006 or ASTM D543-21 immersion testing at the intended service temperature. Continuous hot-water exposure above 60°C should be limited because the glass-fibre sizing can hydrolyze, reducing interfacial strength and causing a measurable drop in flexural modulus after 500 h under ISO 62:2008 water absorption testing. This limitation is common to 10% glass-filled ABS rather than a grade-specific defect.

Regulatory Filings Are Not Implicit in the Grade Name

Compliance must be verified against the supplier’s certificate for the exact shipment because formulation and additive packages can vary between manufacturing sites. The table below lists the typical regulatory documents requested for H1110GF in appliance, electrical, and automotive-interior applications. The product family is generally positioned outside food-contact and medical-grade use unless the converter qualifies the material separately under the relevant national standard.

Compared with high-flow unfilled ABS used for thin-wall appliances, H1110GF sacrifices some ductility and melt flow for higher stiffness and lower creep. The selection logic is therefore governed by flexural modulus under ISO 178, not tensile yield. If the design requires flexural modulus above 3,500 MPa and can accept elongation at break below 5%, H1110GF becomes a candidate. If the part must pass multi-axial impact at -20°C under ISO 6603-2:2000, unfilled ABS or PC/ABS should be evaluated instead because the glass-filled grade may exhibit brittle puncture energy below 8 J at low temperature. Against a 20% glass-filled ABS, H1110GF offers better melt flow and less mould abrasion but lower flexural modulus and creep resistance. Against mineral-filled ABS, the glass fibre provides higher tensile strength and sharper shrinkage anisotropy; mineral fillers offer lower warpage but higher density and lower tensile strength. These differences define the substitution boundary: H1110GF is most suitable for stiffness-driven, moderate-impact injection-moulded parts with wall thickness between 2.0 mm and 3.5 mm, where flow length and gate geometry can be adjusted for fibre orientation and weld-line placement.