Dongguan Maohong Plastic ABS 703
- Product Name: Dongguan Maohong Plastic ABS 703
- Factroy Site: Yinchuan, Ningxia, China
- Price Inquiry: sales8@ascent-chem.com
- Manufacturer: Ascent Petrochem Holdings Co., Limited
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- Dongguan Maohong Plastic ABS 703 is typically used in formulations when melt flow rate/impact strength and processing temperature/moisture content must be controlled within specific ranges.
| HS Code | 420771 |
| Productname | Dongguan Maohong Plastic ABS 703 |
| Manufacturer | Dongguan Maohong Plastic |
| Materialtype | Acrylonitrile Butadiene Styrene (ABS) |
| Grade | 703 |
| Form | Pellets |
| Color | Natural/Black, customizable |
| Processingmethod | Injection molding |
| Density | 1.05 g/cm³ |
| Meltflowrate | 20 g/10 min |
| Tensilestrength | 45 MPa |
| Elongationatbreak | 20% |
| Flexuralstrength | 70 MPa |
| Flexuralmodulus | 2200 MPa |
| Izodimpactstrength | 20 kJ/m² |
| Heatdeflectiontemperature | 90 °C |
| Vicatsofteningtemperature | 100 °C |
| Flammability | HB |
| Moldingshrinkage | 0.4–0.7% |
| Waterabsorption | 0.2% |
| Typicalapplication | Injection-molded housings and components |
As an accredited Dongguan Maohong Plastic ABS 703 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Dongguan Maohong Plastic ABS 703 is supplied in 25 kg moisture-proof woven bags with inner plastic liners, palletized for transport. |
| Container Loading (20′ FCL) | Dongguan Maohong Plastic ABS 703 loaded into a 20′ FCL dry container, palletized, securely braced, labeled, and protected from moisture for shipment. |
| Shipping | Ship Dongguan Maohong Plastic ABS 703 as a non-hazardous thermoplastic resin in sealed, moisture-proof bags or cartons on pallets. Keep dry and away from heat, direct sunlight, and physical damage. Use covered, clean transport; no special dangerous-goods declaration is normally required. |
| Storage | Store Dongguan Maohong Plastic ABS 703 in a cool, dry, well-ventilated warehouse away from direct sunlight, heat, moisture, and ignition sources. Keep bags/containers tightly sealed to prevent dust and contamination. Avoid prolonged stacking or heavy loads. Separate from oxidizers, acids, and solvents. Follow the supplier’s SDS and local regulations; use first-in, first-out stock rotation. |
| Shelf Life | Shelf life is 12 months when stored in original packaging in a dry, ventilated area away from direct sunlight. |
What Limits Mould Temperature in High-Gloss ABS 703 Front Panels?
In high-gloss appliance panels, mould temperature is limited by release performance and gloss stability. A mould temperature of 60–80°C is required to replicate a polished tool surface onto ABS 703. Tool surfaces with SPI A-1 polish are specified. Below 55°C, flow marks and micro-waviness prevent uniform reflection. Above 85°C, cycle time increases and the part may stick to the core, causing ejection strain whitening. Nozzle melt temperature is set at 230–250°C. Higher melt temperatures improve gloss transfer but increase the risk of yellowing in hot runner dead spots. Residence time in the barrel should not exceed 10 min at 240°C. The hot runner manifold is set 5–10°C below nozzle temperature to reduce degradation in the drop. Ejection temperature measured by infrared surface scanning is kept below 70°C before demoulding. Gloss variation is measured to ISO 2813 at 60°. Production reports indicate that gloss variations of more than 3 gloss units occur when hold pressure varies beyond ±5 MPa. External mould release is not recommended. Internal slip additives at 0.1–0.3 wt% are preferred, but they must be assessed for paint adhesion if post-mould coating is required. End products include refrigerator door caps, washing machine top panels, and vacuum cleaner body shells. Compliance for appliance housings follows IEC 60335-1 clause 30.2 for glow-wire testing on parts in contact with live parts. Unfilled ABS 703 is typically classified HB under UL 94. It is therefore restricted to enclosures where no fire enclosure barrier is specified. To reduce stress cracking from repeated contact with household cleaning agents, a 2–3 wt% addition of a plasticised SAN carrier colour concentrate is sometimes used, but this lowers heat distortion temperature measured to ISO 75-2 method A.
Thin-Wall ABS 703 Enclosure Moulding, Static Decay Limits, and Regrind Control
Thin-wall electronics enclosures moulded from ABS 703 are processed with fast injection speeds to fill wall sections of 1.2–1.8 mm. Melt temperature is set at 235–250°C. Injection speed is mapped at 80–120 mm/s for the first 70% of cavity volume. At the gate, shear rates of 1,000–5,000 s⁻¹ are typical for 1.2 mm walls. Below 80 mm/s, short shots occur in ribs and snap-fit features. Above 120 mm/s, gas venting at the parting line cannot keep pace, and burn marks appear at the end of fill. Vent depths for unplated ABS 703 are machined to 0.02–0.03 mm. Deeper vents produce flash. Hold pressure of 60–80 MPa is maintained for 4–8 s. Mould temperature is held at 40–60°C. Surface resistivity of unfilled ABS 703 is not controlled for ESD applications. Antistatic grades or external coatings are required where surface resistivity below 10¹² Ω/sq is specified. The material therefore fits non-critical enclosures such as router bases, set-top box frames, and power adapter shells that do not require UL 94 V-0. Regrind of sprues and runners is limited to 30 wt% for visible surfaces. Higher regrind levels reduce notched impact strength measured to ISO 180/1A by more than 15% in thin-wall sections and increase black specks from degraded material in hot runner drops. The shot size should fill 40–70% of the barrel capacity. Residence time at 240°C is limited to 8 min. If pause time exceeds 3 min, purging with SAN or acrylic for 10–15 shots prevents carbonised deposits. Compliance testing under IEC 62368-1 is normally performed on the final assembly, not on the raw resin. The enclosure part must survive a 0.5 J impact at the thinnest section after conditioning at −10°C for 4 h, but the standard specifies the test on the final product. RoHS Directive 2011/65/EU restricts lead, cadmium, mercury, and hexavalent chromium in homogeneous materials. Unfilled ABS 703 is expected to comply, but every colour masterbatch is the verification point.
Compliance verification for the downstream categories discussed is condensed in the following table.
| Application segment | Standard designation | Critical test condition |
|---|---|---|
| Automotive interior trim | DIN 75201-B | Fogging condensate ≤2 mg at 100°C for 16 h |
| Automotive interior trim | VDA 278 | OEM-defined VOC limit, commonly ≤100 µg/g |
| Home appliance panels | IEC 60335-1 clause 30.2 | Glow-wire classification per end-product current and supervision status |
| Electronics enclosures | IEC 62368-1 | 0.5 J impact on final enclosure at −10°C |
| Toy components | EN 71-3 | 19-element migration limit from material category III |
| Luggage shells | EN 12546 | Final article stability and handle strength tests |
Migration testing under EN 71-3 is mandatory before ABS 703 is accepted for toy components. The standard extracts dried specimens in 0.07 N hydrochloric acid at 20°C for 2 h and then at 37°C for 1 h. Unfilled ABS 703 is not expected to release heavy metals from the resin matrix. The final compound still must be tested with the actual masterbatch and mould release package. REACH Annex XVII entry 51 restricts phthalates in plasticised materials at ≤0.1 wt%. Rigid ABS 703 does not require plasticiser, but a masterbatch carrier may introduce non-compliant substances. Toy parts made from ABS 703 include construction block bases, board game tokens, and model kit frames. The process window for small toy parts is set at melt temperature 210–230°C, mould temperature 30–50°C, and hold pressure 40–60 MPa. Lower melt temperature is selected to reduce volatile degradation by-products and to preserve colour stability. Cycle times for shot weights below 20 g are typically 20–35 s. Mould release is prohibited on toy contact surfaces unless a post-mould washing step is validated. Gate design for small parts uses a 0.8–1.2 mm diameter pinpoint gate to limit gate vestige. Residual gate vestige is assessed under EN 71-1 section 8 for sharp edges. Drop testing on frozen parts at −18°C for 4 h is commonly performed by moulders; the pass/fail criterion is set by the toy brand. Clean regrind may be used up to 20 wt% in toys. The regrind must be generated from the same colour and lot to avoid batch-to-batch heavy metal variation.
If ABS 703 Replaces PC/ABS in Hard-Shell Luggage, Weld-Line Impact Must Be Tested Before Tool Release
For hard-shell luggage and protective cases, attention shifts to weld lines and low-temperature impact response. The melt temperature is set at 235–250°C. Mould temperature is held at 50–70°C. A multi-gate system produces weld lines at the convergence zones, and these lines become the dominant failure sites under diagonal drop testing. Izod notched impact strength measured to ISO 180/1A at 23°C is used for material screening. It does not predict frozen-impact performance of a structured shell. Moulders therefore cut specimens from the weld-line region and test at −10°C with a 1 m drop onto a steel plate. Gate positions are moved in simulation until the weld line falls away from corner radii. Injection speed is set at 60–90 mm/s. Faster injection lowers melt front temperature and worsens weld strength. Slower injection causes hesitation lines. The shot weight for a 55 cm cabin case is approximately 800–1,100 g. This requires a barrel capacity of 1,200–1,800 g. Clamp force is maintained at 0.45–0.55 tonnes/cm² of projected area. Rib-to-wall ratio is kept at 0.5–0.6 to prevent sink marks on the outer surface. End products include cosmetic cases, camera hard cases, and cabin luggage shells. Compliance for luggage is governed by EN 12546 for final article stability, not by raw resin certification. For coloured shells, 3–5 wt% of colour masterbatch with an ABS carrier is typically added. The masterbatch reduces melt viscosity, so hold pressure may need to be lowered by 5–10 MPa to prevent flash. If the tool is textured, a minimum draft angle of 3° is required with a dry-blasted surface. Polished surfaces used for high-gloss luggage require 5° draft.
Household Storage and Appliance Trim Parts Demand a Controlled Regrind Fraction
Household storage and appliance trim parts made from ABS 703 include vacuum cleaner brush housings, iron toe caps, and modular storage bins. The main process conflict is the balance between regrind economics and surface quality on non-visible areas. Melt temperature is set at 225–245°C. Mould temperature is set at 40–60°C. Injection speed is profiled at 50–80 mm/s. Hold pressure is set at 55–75 MPa. For storage bins with long flow lengths, melt temperature should be raised to 245°C to maintain flow path, but not above 250°C. Regrind is limited to 30 wt% for non-visible areas. Visible surfaces are limited to 15 wt%. Each 10 wt% increase in regrind fraction raises yellowness index by approximately 0.3 units under a D65 illuminant, but published data for ABS 703 is limited. The screw L/D ratio should be at least 20:1 to achieve homogeneous melt. The compression ratio should be 2.0–2.5:1. A general-purpose screw with a compression ratio of 3:1 may generate excessive shear heating and cause local thermal degradation. The use of 0.2–0.5 wt% of a styrene-rich purge compound during colour changes reduces black specks. Compliance for household goods under REACH is maintained through the safety data sheet of the colour masterbatch and the mould release agent. If the part is used in contact with food, FDA 21 CFR 180.22 or EU Regulation 10/2011 may apply to the final article. ABS 703 as supplied is not cleared for food contact unless the finished article meets overall migration and composition limits. The operational boundary is clear: the material must be kept dry below 0.05 wt% moisture. Above 0.08 wt%, surface defects appear on smooth surfaces. Mechanical loads in this segment are lower, but surface appearance remains the primary rejection criterion.
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- Dongguan Maohong Plastic ABS 703 is manufactured under an ISO 9001 quality system and complies with relevant regulatory requirements.
- COA, SDS/MSDS, and related certificates are available upon request. For certificate requests or inquiries, contact: sales8@ascent-chem.com.
Dongguan Maohong Plastic ABS 703 is an acrylonitrile-butadiene-styrene terpolymer supplied by Dongguan Maohong Plastic Materials Co., Ltd. The product is handled in the supplier’s portfolio as a general-purpose injection-molding ABS; this classification should be confirmed against the current technical datasheet. The three-digit grade designation does not, by itself, encode a fixed property set. Melt mass-flow rate, tensile yield stress, flexural modulus, notched Izod impact strength, Vicat softening temperature, and density vary across production lots within the supplier’s tolerance band. Specific values for ABS 703 should therefore be obtained from the lot-specific certificate of analysis rather than transferred from generic ABS datatsheets. Incoming inspection for an ABS of this type is typically organized around ISO 1133-1:2011 for melt mass-flow rate, ISO 527-2:2012 for tensile properties, ISO 178:2019 for flexural modulus, ISO 180:2019 for Izod impact strength, ISO 306:2013 for Vicat softening temperature, and ISO 1183-1:2019 for density.
In ABS terpolymers, the continuous matrix is a styrene-acrylonitrile copolymer while dispersed polybutadiene rubber particles provide impact dissipation. Differences among commercial grades are governed by molecular weight distribution, acrylonitrile content, rubber-particle size distribution, grafting efficiency, and the antioxidant/lubricant package. A medium-flow general-purpose grade such as ABS 703 is expected to occupy the region between high-flow and high-impact grades, but published data for this specific configuration is limited. The supplier’s technical data sheet should be treated as normative for rubber content, linear mold shrinkage, melt volume-flow rate, and the recommended processing window.
| Property | Test method | Typical general-purpose ABS class envelope | ABS 703 verification status |
|---|---|---|---|
| Melt mass-flow rate, 220 °C/10 kg | ISO 1133-1:2011 | 10–25 g/10 min | Supplier certificate of analysis required |
| Tensile yield stress, 50 mm/min | ISO 527-2:2012 | 35–50 MPa | Supplier certificate of analysis required |
| Flexural modulus, 2 mm/min | ISO 178:2019 | 1800–2500 MPa | Supplier certificate of analysis required |
| Notched Izod impact strength, 23 °C | ISO 180:2019 | 15–30 kJ/m² | Supplier certificate of analysis required |
| Vicat softening temperature, B50, 50 N, 50 °C/h | ISO 306:2013 | 95–110 °C | Supplier certificate of analysis required |
| Density | ISO 1183-1:2019 | 1.03–1.07 g/cm³ | Supplier certificate of analysis required |
| Linear mold shrinkage, parallel/normal | ISO 294-4:2018 | 0.4–0.7 % | Supplier certificate of analysis required |
The intervals in the third column describe unfilled, unpigmented general-purpose ABS as a class and are not equivalent to a lot-specific purchase specification for ABS 703. Lot-specific values can differ because of variations in rubber particle size, SAN molecular weight, and additive loading. These intervals should not be used as acceptance limits without written confirmation from the supplier.
What Processing Envelope Applies to ABS 703?
Before plastication, the material should be dried to a residual moisture level below 0.05 wt%. Typical desiccant-dryer settings for unfilled ABS are 80 °C to 85 °C for 2 h to 4 h at a dew point of ≤ -20 °C. Melt temperature at the nozzle is customarily held between 220 °C and 250 °C, with mold temperature between 40 °C and 80 °C depending on required surface appearance, weld-line strength, and dimensional stability. Injection molding machines with a general-purpose screw of 20:1 to 24:1 L/D and compression ratio of 2:1 to 2.5:1 are used for this grade class. Back pressure in the range 0.5 MPa to 1.5 MPa improves melt homogeneity, while injection velocity is adjusted to avoid shear heating above 250 °C and rubber-phase degradation. Processing outside the supplier-published window for ABS 703 may cause splay, silver streaks, weld-line weakness, or measurable loss of notched Izod impact. These parameters are class-level starting points for unfilled ABS, not a certificate of conformance.
The clamp force required for ABS 703 components is determined from projected area multiplied by cavity pressure. For unfilled general-purpose ABS in thin-wall parts, cavity pressures often fall between 30 MPa and 60 MPa. A part with 300 cm² projected area may therefore require approximately 90 t to 180 t clamping force, depending on flow length, wall thickness, and gate freeze. This calculation is used in production planning and tool transfer and requires correction for hot-runner pressure drop, part geometry, and gate type.
Use of this grade in manufacturing practice typically follows the general-purpose ABS route: thin-wall enclosures, faceplates, structural housings, small appliance parts, electronic equipment bodies, and interior components that require a balance of rigidity, impact resistance, and consistent knit-line strength. Because the supplier’s published application-specific data for ABS 703 is limited, end-use qualification under relevant service conditions—thermal aging, chemical exposure, cyclic loading, and ultraviolet exposure—is required before production release. Part designers should verify the supplier’s lot-specific linear mold shrinkage before cutting steel because variations of even 0.1 % alter fit and gap dimensions in multi-cavity tools.
When Comparing ABS 703 with High-Flow, High-Impact, and Flame-Retardant ABS Grades
The differentiation of ABS 703 from adjacent portfolio grades is based on compositional and rheological variables rather than color or surface finish alone. High-flow ABS grades typically exhibit melt mass-flow rates above 25 g/10 min at 220 °C and 10 kg. This shortens fill time but reduces molecular weight and produces lower notched Izod impact and environmental-stress-cracking resistance. High-impact ABS grades, with higher butadiene rubber content, commonly reach notched Izod values above 30 kJ/m² at 23 °C but show lower tensile modulus, lower surface hardness, and reduced gloss. Heat-resistant ABS grades use α-methylstyrene, maleic anhydride, or maleimide comonomers and shift Vicat softening temperature above 110 °C, usually at the cost of melt flow. Flame-retardant ABS grades carry brominated, antimony, or phosphate packages and are tested to UL 94; they may show reduced tensile yield, poorer light stability, or higher density. ABS 703 is classified as a general-purpose grade and should be expected to occupy the medium-flow, medium-impact region of this matrix; however, the supplier’s numeric boundaries have not been reproduced here because published data for this specific configuration is limited. For extrusion-grade ABS or ABS sheet used in thermoforming, higher melt strength and tighter gel control are required. ABS 703 is not positioned for those processes unless the supplier’s processing guide explicitly covers them.
| Grade category | Compositional driver | Typical selection consequence |
|---|---|---|
| High-flow ABS | Lower average molecular weight or higher lubricant | MFR above 25 g/10 min; lower impact and ESC resistance |
| High-impact ABS | Higher polybutadiene content | Izod above 30 kJ/m²; lower modulus and gloss |
| Heat-resistant ABS | α-methylstyrene or maleimide comonomer | Vicat above 110 °C; reduced flow |
| Flame-retardant ABS | Halogen/antimony or phosphate package | UL 94 V-0; density increase, tensile loss |
| General-purpose ABS 703 | Balanced SAN/rubber package | Medium flow and medium impact; supplier certificate of analysis controls exact values |
On production-scale injection molding lines, the main processing risks for unfilled ABS are thermal degradation of the polybutadiene phase, moisture-induced splay, and variability in regrind rheology. Drying above 95 °C is avoided because prolonged exposure to high temperature oxidizes the rubber phase and causes yellowing or loss of impact. Regrind ratios are commonly limited to 20 wt% to 30 wt% for natural or white parts unless the supplier’s validated data supports a higher level. Each regrind pass increases melt mass-flow rate and shifts the molecular weight distribution. Processors should measure the melt mass-flow rate of regrind blends against ISO 1133-1:2011 and compare the value with the supplier’s virgin ABS 703 window before raising regrind content.
Chemical exposure data for ABS 703 should be evaluated against ISO 22088-3:2006 or ASTM D543-20 using the actual solvent, service temperature, and applied strain. General-purpose ABS is resistant to dilute aqueous acids, alkalis, and many aliphatic hydrocarbon oils but is attacked or stress-cracked by ketones, esters, aromatic hydrocarbons, and some plasticizers. The presence of butadiene rubber in the two-phase structure makes environmental stress-cracking resistance strongly dependent on surface strain and contact time. Published data for this specific configuration is limited; field testing with molded parts is required before production release in chemical-contact applications.
Splay, Gate Blush, and Dimensional Frozen-In Stress
Splay in ABS 703 moldings occurs when moisture, trapped volatiles, or degraded resin creates a visible silvery streak on the surface. The first corrective action is verification of residual moisture by a calibrated moisture analyzer or coulometric Karl Fischer method, because desiccant-dryer confidence does not guarantee a dew point below -20 °C. If moisture is below 0.05 wt%, the next check is excessive melt temperature, long residence time, or high compression-zone shear. Polymer residence time at melt temperature should not exceed 5 min to 10 min for unfilled ABS unless the supplier’s purging protocol supports a longer hold. Shot size should remain between 25 % and 75 % of barrel capacity to limit stagnant material.
Gate blush results from localized shear heating at the gate when injection velocity is high and gate diameter is small. The deflection is managed by reducing injection velocity, increasing gate diameter, or adjusting melt temperature toward the lower range of the supplier’s window. If blush persists, the pressure drop across the gate should be measured by short-shot studies or cavity-pressure sensors, since shear rates above the material limit degrade the butadiene phase and produce free surface defects. Hot-runner systems should be evaluated for dead spots, internal thermocouple drift, and improper nozzle tip alignment before modifying material parameters.
Frozen-in stress and post-molding dimensional movement are controlled by packing-pressure decay, cooling time, and mold temperature uniformity. With unfilled ABS, mold temperature below 40 °C may produce high gloss edges but increases oriented stress and reduces weld-line strength. Mold temperature above 80 °C improves stress relaxation and knit-line appearance but can extend cycle time and produce sink marks in ribbed sections. Dimensional checks should be performed after conditioning to 23 °C and 50 % relative humidity according to ISO 291:2008; measurements taken immediately after ejection can shift by more than 0.1 % during progressive moisture equilibration and relaxation.
Regulatory status must be confirmed from the supplier’s safety data sheet and technical datasheet. A general-purpose ABS of this class may be expected to comply with RoHS 2011/65/EU recast annex II substance restrictions and REACH 1907/2006 SVHC candidate list at the date of supply, but the absence of intentionally added heavy metals, phthalates, or brominated flame retardants is lot-dependent. The material is not self-classified for food-contact use under FDA 21 CFR 177.1020 or EU 10/2011 unless the supplier provides a written food-contact declaration. Nor should ABS 703 be used as a primary load-bearing material above its Vicat softening temperature. These are compliance boundaries, not performance guarantees, and they must be revalidated for each production campaign because additive packages and raw-material sourcing can change without notice.
