SAN GF30
Reinforced grade
ASTM D4203 · GB GB/T 12670 · ISO 4894 SAN · also Luran, Tyril
GF30 = 30% Glass Fiber reinforced SAN
Common structural SAN grade balancing stiffness, dimensional stability and cost for appliance and pump parts.
Values for the GF30 condition
Other SAN grades and fills
SAN is listed in 7 conditions; see the grade overview at SAN.
Compare all 7 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Impact-modified / transparent toughened SAN | Rubber-modified transparent styrenic (MABS/SAN blend) when drop impact is needed while keeping see-through clarity. | 44 | 48 | 20 | 76 Shore D |
Flame-retardant SAN | Compounded FR grade for electrical enclosures; opaque or translucent only, with reduced impact and heat performance. | 58 | 60 | 2 | 82 Shore D |
Easy-flow / high-MFR injection grade | For thin-wall, long-flow transparent parts and multi-cavity tools; slightly lower toughness and heat resistance. | 64 | 66 | 2.5 | 82 Shore D |
High-heat / high-acrylonitrile SAN | Higher AN content (~30%) for extra heat, stiffness and chemical/ESC resistance in lighting and hot-fill applications; slight yellow tint. | 76 | 78 | 2.5 | 85 Shore D |
20% Glass Fiber reinforced SAN | Entry stiffness upgrade with moderate warpage; used for pump housings and structural covers where opacity is acceptable. | — | 95 | 2.2 | 88 HRM |
GF30This page 30% Glass Fiber reinforced SAN | Common structural SAN grade balancing stiffness, dimensional stability and cost for appliance and pump parts. | — | 115 | 1.8 | 92 HRM |
40% Glass Fiber reinforced SAN | Maximum-stiffness SAN for load-bearing housings and pump impellers; brittle, abrasive to tooling and highly anisotropic. | — | 130 | 1.5 | 95 HRM |
What is SAN GF30?
SAN GF30 is SAN in the GF30 grade — common structural SAN grade balancing stiffness, dimensional stability and cost for appliance and pump parts. SAN GF30 has a yield strength of 70 MPa (10.2 ksi) and a tensile strength of 115 MPa (16.7 ksi) — stronger than 79% of polymer grades. Elongation at break is 1.8% and the elastic modulus is 9.5 GPa (1.38 Msi). SAN GF30 has a density of 1.31 g/cm³ (0.0473 lb/in³), heavier than 71% of polymer grades. Its glass-transition temperature is 106°C (223 °F).
Advantages
- Polishes to a fine finish — 88/100, better than 95% of polymer grades
- Stiff — 9.5 GPa (1.38 Msi), better than 94% of polymer grades
- Low, predictable mold shrinkage — 0.2%, better than 94% of polymer grades
- High strength — 70 MPa (10.2 ksi), better than 79% of polymer grades
Limitations
- Limited ductility — 1.8%, worse than 97% of polymer grades
- Difficult to machine — 40/100, worse than 82% of polymer grades
- Poor heat conductor — 0.17 W/m·K (0.0982 BTU/hr·ft·°F), worse than 75% of polymer grades
SAN GF30 properties
Typical room-temperature values for SAN GF30; 15 are specific to this condition. Other listed values are SAN reference data and may not represent this condition. Bars are the position among polymer grades.
Physical6
SAN GF30 has a density of 1.31 g/cm³ (0.0473 lb/in³), heavier than 71% of polymer grades. Its glass-transition temperature is 106°C (223 °F).
Mechanical17
SAN GF30 has a yield strength of 70 MPa (10.2 ksi) and a tensile strength of 115 MPa (16.7 ksi) — stronger than 79% of polymer grades. Elongation at break is 1.8% and the elastic modulus is 9.5 GPa (1.38 Msi).
Thermal11
SAN GF30 is rated for continuous service to 92°C (198 °F). It conducts heat at 0.17 W/m·K (0.0982 BTU/hr·ft·°F), worse than 75% of polymer grades. Thermal expansion is 28 µm/m·K (15.6 µin/in·°F).
Electrical7
SAN GF30 is an electrical insulator with a dielectric strength of 22 kV/mm (558.8 V/mil) and a resistivity of 1×10¹⁴ Ω·m.
Chemical & Environmental3
Corrosion resistance is very good (72/100), worse than 70% of polymer grades. UV resistance is poor.
Sustainability4
Producing a kilogram of SAN GF30 takes about 96 MJ of energy and emits 3.5 kg of CO₂ — less than 67% of polymer grades. Typical recycled content is 0%.
Manufacturability8
SAN GF30's machinability is fair (40/100, worse than 82% of polymer grades); weldability very good (70/100); formability fair (45/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with SAN GF30
Is SAN easy to machine?
Machines like acrylic — sharp, polished, high-rake tools, high speed, low feed, air or mist cooling; avoid solvent coolants which cause crazing, and anneal at ~75 °C to relieve stress before machining.
Can SAN be welded?
Ultrasonic, vibration, hot-plate and solvent bonding (MEK/methylene-chloride blends) all work well; solvent joints must be stress-free or the part will craze.
Can SAN be formed, bent or molded?
Dry 2–4 h at 80 °C, inject at 220–260 °C melt / 50–80 °C mold with moderate speed and generous gates; sheet thermoforms at 140–170 °C. Shrinkage 0.4–0.7 % (0.1–0.3 % for GF).
What surface finishes work on SAN?
Takes mirror finish directly from polished tooling; vacuum metallizing, hard coating and pad/screen printing are standard, but check ink and cleaner solvents against ESC risk.
SAN 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 |
|---|---|---|
| styrenemonomer unit | 70 – 80 | 75 |
| acrylonitrilehigher AN = higher heat/chemical resistance, more yellow tint | 20 – 30 | 25 |
| additives (stabilizers, lubricants, colo | 0.2 – 2 | 0.8 |
| glass fiber0 for unfilled; 20/30/40 wt% in GF variants | ≈ 0 | 0 |
SAN GF30 — frequently asked
What is SAN GF30 used for?
SAN GF30 is typically used for kitchenware and food containers, battery cases, cosmetic packaging, instrument lenses/covers and medical device housings. In short: transparent styrenic copolymer; stiffer than ABS; low elongation, notch-sensitive.
What is the yield strength of SAN GF30?
SAN GF30 has a typical yield strength of 70 MPa (10.2 ksi) and a tensile strength of 115 MPa (16.7 ksi) — stronger than 79% of polymer grades. Strength varies by condition: see the 7 listed tempers.
Is SAN GF30 easy to machine?
Not especially — machinability is rated fair (40/100, worse than 82% of polymer grades). Machines like acrylic — sharp, polished, high-rake tools, high speed, low feed, air or mist cooling; avoid solvent coolants which cause crazing, and anneal at ~75 °C to relieve stress before machining.
Can SAN GF30 be welded?
Yes — weldability is rated very good (70/100). Ultrasonic, vibration, hot-plate and solvent bonding (MEK/methylene-chloride blends) all work well; solvent joints must be stress-free or the part will craze.
What surface finishes work on SAN GF30?
Takes mirror finish directly from polished tooling; vacuum metallizing, hard coating and pad/screen printing are standard, but check ink and cleaner solvents against ESC risk.
Can SAN GF30 be formed, bent or molded?
Dry 2–4 h at 80 °C, inject at 220–260 °C melt / 50–80 °C mold with moderate speed and generous gates; sheet thermoforms at 140–170 °C. Shrinkage 0.4–0.7 % (0.1–0.3 % for GF).
What is the maximum service temperature of SAN GF30?
SAN GF30 is rated for continuous use to about 92°C (198 °F), and briefly to 95°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- ISO 4894-1/-2 Plastics — Styrene/acrylonitrile (SAN) moulding and extrusion materials — ISO (1997)
- ASTM D4203 Standard Specification for Styrene-Acrylonitrile (SAN) Injection and Extrusion Materials — ASTM International (2018)
- Luran SAN product range and processing guide — INEOS Styrolution (2022)
- Tyril SAN resin datasheets — Trinseo (2021)
- CAMPUS plastics database — SAN ISO 10350 datasets — CWFG / CAMPUS consortium (2023)
- Engineered Materials Handbook Vol. 2: Engineering Plastics — ASM International (1988)
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.