Qingdao Haier New Material ABS NH9604G10 is a short-glass-fibre-reinforced acrylonitrile-butadiene-styrene injection moulding grade. The grade designation separates the unfilled ABS platform—NH9604—from the nominal 10% glass-fibre mass fraction indicated by G10. This intermediate fibre loading positions the product between unfilled ABS and 20% glass-filled ABS compounds in stiffness, melt flow, and shrinkage behaviour. Published grade-specific values from the manufacturer’s certificate of analysis are the only valid acceptance data for production lots. Where class-typical values are referenced in this technical overview, they are identified as such because the manufacturer’s published datasheet for this exact grade remains the controlling document.

What Differentiates NH9604G10 from Unfilled ABS and Higher-Fibre Compounds?

The measurable differences are concentrated in tensile modulus, flexural modulus, notched impact strength, and mould shrinkage. Under ISO 527-2:2012, unfilled ABS typically shows tensile modulus of 2.1 GPa to 2.4 GPa, whereas the 10% glass-fibre ABS class rises to 3.0 GPa to 3.8 GPa. Flexural modulus under ISO 178:2019 moves from 2.4 GPa to 2.8 GPa in unfilled ABS to 3.2 GPa to 3.8 GPa in the reinforced class. This stiffening is accompanied by a loss of ductility: notched Izod impact under ISO 180:2023 falls from 20 kJ/m² to 35 kJ/m² for unfilled ABS at 23°C to 8 kJ/m² to 12 kJ/m² for the 10% glass-fibre class. Melt viscosity increases at low shear rates, but the effect is less severe than in 20% glass-filled systems. Compared with PC/ABS blends, the glass-filled ABS compound provides lower processing temperature and lower density, while PC/ABS retains higher low-temperature impact resistance.

The values in the table are class-typical data for short-glass-fibre ABS systems and should not be read as grade-specific quality limits.

Moisture, Melt Temperature, and Screw Configuration Limits

Moisture is the first control point. Pellets must be dried to below 0.05% moisture by weight before melt processing. A desiccant dryer with air dew point at or below -30°C, drying temperature of 80°C to 90°C, and residence time of 2 h to 4 h is used when ambient relative humidity exceeds 60%. Melt temperature is normally set between 230°C and 260°C. The lower half of this range is preferred for heavy-wall parts to reduce gas generation; the upper half is reserved for thin-wall filling. Cumulative residence time above 250°C should not exceed 8 min because the butadiene phase in the ABS matrix undergoes thermal degradation and the glass-fibre sizing can discolour. Mould temperature should be held at 60°C to 80°C. A higher mould temperature improves knit-line strength and dimensional replication, but increases cycle time and reduces the already low surface gloss.

On reciprocating-screw machines, screw torque increases relative to unfilled ABS because the glass fibres raise melt viscosity. A general-purpose screw with L/D ratio of 20:1 to 24:1 and compression ratio of 2.0:1 to 2.5:1 is recommended. High-compression screws break glass fibres and reduce tensile strength. Back pressure is set at 0.5 MPa to 1.5 MPa to maintain fibre dispersion, while screw surface speed is limited to 0.2 m/s to 0.4 m/s. Injection speed is moderate to high, depending on flow length; excessive speed causes jetting and surface streaking, while insufficient speed results in short shots and high residual stress. Vent depth of 0.02 mm to 0.03 mm and vent land length below 1.5 mm are used to remove volatiles without flash.

Hot-runner systems for this grade require open-pipe geometry with low-shear channels; valve-gate systems are preferred over hot-tip gates because freeze-off in small gates can cause fibre-rich melt to degrade. The clamping force requirement is derived from the projected area and cavity pressure. For glass-filled ABS, cavity pressure at the end of fill typically ranges from 20 MPa to 35 MPa; a moulding machine clamp force of 0.4 kN/cm² to 0.6 kN/cm² of projected area is used for initial tool trials. Insufficient clamp force leads to flash at the parting line and dimensional variability. Mould steel should be hardened to at least HRC 50 in high-wear areas because glass fibres are abrasive and accelerate gate and vent wear.

Shrinkage Anisotropy and Warpage Control in Moulded Parts

The 10% glass-fibre content replaces the near-isotropic shrinkage of unfilled ABS with orientation-dependent shrinkage. Class-typical shrinkage parallel to flow is 0.2% to 0.4%, while transverse shrinkage reaches 0.5% to 0.8% under ISO 294-4:2018. In flat parts with edge gating, this difference produces concave or convex warpage after cooling, particularly when part thickness is below 2.5 mm. The warpage mechanism is not solely thermal contraction; fibre orientation creates anisotropic elastic modulus and anisotropic thermal expansion. Mould-filling analysis that incorporates fibre-orientation tensors is required before final gate placement. Ribs and bosses should be positioned to minimise fibre flow disturbance, and wall thickness transitions should be gradual, with a transition angle of 30° to 45° to avoid fibre accumulation at sharp corners.

When NH9604G10 Replaces Unfilled ABS in Structural Brackets

Substitution is appropriate when the part requires higher bending stiffness at ambient temperature and can tolerate lower impact toughness. Load-bearing bosses and ribs in the glass-filled grade should be thickened by 10% to 15% relative to unfilled ABS to offset the reduction in notched impact strength. Weld lines represent the primary failure risk. Short glass fibres orient perpendicular to the weld line, reducing tensile strength at the knit line by 20% to 40% compared with the bulk material under ISO 527-2:2012. Process changes that improve weld-line strength include raising mould temperature to the upper limit of 80°C, increasing packing pressure, and moving the gate to locate the weld line away from high-tensile surfaces. Published data for this specific configuration is limited; therefore, tool validation should include tensile testing of weld-line specimens cut from production parts and comparison with the unfilled ABS baseline.

Thermal and Mechanical Property Boundaries Under Continuous Load

Under ISO 75-2:2013, class-typical heat deflection temperature for a 10% glass-fibre ABS is 90°C to 100°C at 1.82 MPa. This is 5°C to 10°C higher than many unfilled ABS grades, but the continuous-use temperature is controlled by the ABS matrix and should not exceed 80°C in load-bearing applications. Tensile strength under ISO 527-2:2012 falls in the range of 45 MPa to 60 MPa, with elongation at break of 1.5% to 3.5%. Flexural modulus under ISO 178:2019 lies between 3000 MPa and 3800 MPa. The material should be classified as a stiff, low-elongation thermoplastic; design stress for sustained loading at 23°C should remain below 25% of the measured yield stress to avoid creep and stress cracking. At sub-zero temperatures, the ABS matrix embrittles, and the glass fibres do not compensate for the loss of matrix toughness.

Compliance Matrix for RoHS, REACH, and Mechanical Test Methods

Lot acceptance for ABS NH9604G10 should include the following measurements. The table is not a complete specification, but it lists the methods commonly used for glass-fibre-reinforced ABS compounds. The supplier’s certificate of analysis must state the actual lot values.

Regulatory compliance is verified through RoHS Directive 2011/65/EU for lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE. REACH candidate-list screening is conducted under EC 1907/2006. Food-contact status is not assigned without grade-specific certification.

In appliance structural frames, electrical enclosure frames, and automotive interior brackets, ABS NH9604G10 is specified where dimensional stability under moderate heat and lower creep under static load are more important than high-gloss appearance or extreme impact toughness. Moulded pump impellers and power-tool housings have also been produced from glass-filled ABS of this loading level, but published case-study data for this specific product is limited. In these applications, gate location, weld-line placement, and fibre orientation must be captured in the tool design, not compensated for solely by post-mould conditioning. The compound is not recommended for live-part electrical barriers requiring UL 94 V-0 performance unless the manufacturer provides a controlled flammability certificate for this grade. It is also not preferred for high-gloss cosmetic surfaces or for components exposed to ketones, esters, or aromatic solvents, because the ABS matrix can stress-crack under solvent contact.