1. PVC vs PP: Start with Basic Performance
In engineering plastic selection, ABS vs PP—which is better and PVC vs PP—which is better—are two of the most common questions from buyers. The answer cannot rely on price or a single indicator; it requires comparison across five dimensions: temperature resistance, corrosion resistance, mechanical strength, price and processing. This article first compares PVC vs PP, then extends to a deep dive on ABS vs PP, helping readers make precise selections based on use case.
PVC (polyvinyl chloride) has a density of 1.38-1.45 g/cm³ and a long-term temperature limit of 60°C (CPVC reaches 95°C); PP (polypropylene) has a density of 0.90-0.91 g/cm³ and a long-term limit of 100°C; ABS (acrylonitrile-butadiene-styrene) has a density of 1.04-1.06 g/cm³ and a long-term limit of 80°C. On density alone, PP is 35%-40% lighter than PVC—a significant advantage for weight-sensitive applications.
2. Five-Dimension Comparison
2.1 Dimension 1: Temperature Resistance
PVC long-term service temperature maxes at 60°C; modified CPVC reaches 95°C; PP long-term at 100°C; PP-R for hot water at 70°C; ABS long-term at 80°C, short-term at 90°C.
Conclusion: Above 80°C choose PP; 60-80°C choose ABS or CPVC; at or below 60°C any of the three will work—decide on other dimensions.
2.2 Dimension 2: Corrosion Resistance
- PVC: excellent acid, alkali and salt resistance; not resistant to aromatics (benzene, toluene), ketones (acetone), esters
- PP: broadest chemical resistance; resists 80% sulfuric acid, dilute hydrochloric acid, sodium hydroxide; not resistant to fuming sulfuric acid, strong oxidizers
- ABS: resists weak acids and alkalis, oils; not resistant to most organic solvents or strong acids
Conclusion: For corrosive chemical scenarios, PP or PVC first; ABS only for mild environments—see /products/engineering_plastic.
2.3 Dimension 3: Mechanical Strength
| Parameter | PVC | PP | ABS |
|---|---|---|---|
| Density (g/cm³) | 1.38-1.45 | 0.90-0.91 | 1.04-1.06 |
| Tensile strength (MPa) | 45-55 | 30-40 | 40-50 |
| Flexural strength (MPa) | 80-100 | 40-55 | 60-75 |
| Impact strength (kJ/m²) | 5-8 | 8-15 (no break) | 15-25 |
| Hardness (Shore D) | 75-82 | 65-72 | 78-85 |
| Vicat softening temp (℃) | 80-85 | 100-110 | 90-100 |
Conclusion: PVC leads in rigidity and hardness; ABS in impact toughness; PP in overall balance.
2.4 Dimension 4: Price
Taking boards as an example, domestic industrial-grade reference prices:
- Rigid PVC board: 25-280 RMB/m² (2-20mm)
- PP board: 35-320 RMB/m² (2-20mm)
- ABS board: 60-450 RMB/m² (2-20mm)
Resin ton price: PVC 6000-8000 RMB/t, PP 7500-9500 RMB/t, ABS 11000-14000 RMB/t.
Conclusion: PVC for cost-sensitive; PP for mid-range; ABS for high-end appearance parts.
2.5 Dimension 5: Processing and Appearance
- PVC: injection, extrusion, hot-pressing, welding; mainly gray/white, industrial look
- PP: excellent injection, suitable for thin-wall parts; semi-transparent to opaque, average gloss
- ABS: best injection performance; plating, painting, screen-printing all work; high gloss, premium appearance
Conclusion: ABS for high-gloss appearance, plating or painting; PP for complex thin-wall parts; PVC for welded chemical components.
3. ABS vs PP—Which Is Better? Scenario Answers
3.1 Sanitary Ware (toilet seats, tank fittings)
ABS is better: high gloss, good impact toughness, premium feel. PP is cheaper but matte and easy to scratch, only for low-end products.
3.2 Food Containers and Microwave Boxes
PP is better: PP food-grade meets GB 4806.7, heat-resistant to 120°C for microwave; ABS contains acrylonitrile, unsuitable for food contact.
3.3 Electrical Housings (TVs, computers, appliances)
ABS is better: excellent insulation, high injection precision, platable and paintable—mainstream for electrical housings. PP has high shrinkage and poor appearance, less common.
3.4 Chemical Pipes and Tanks
PP is better: broader chemical resistance, higher temperature, lower density—the preferred choice for chemical piping and tank linings. ABS lacks corrosion resistance; PVC is limited by some organic solvents.
3.5 Luggage Shells and Automotive Interiors
ABS is better: best combination of impact, rigidity and appearance, supports high-gloss painting. PP only for low-end luggage.
4. PVC vs PP—Which Is Better? Scenario Answers
4.1 Chemical Anti-Corrosion Linings
PVC is better: rigid PVC welds well for large-area linings; stable resistance to dilute acids and alkalis; low price. PP welding is harder and has higher thermal expansion.
4.2 High-Temperature Pipes (>60°C)
PP is better: PVC pressure capacity drops sharply above 60°C; PP works long-term at 100°C—preferred for high-temperature chemical piping.
4.3 Food-Grade Containers
PP is better: PP food-grade certification is well established (GB 4806.7); PVC may leach plasticizers, unsuitable for food contact.
4.4 Advertising Signage and Decoration
PVC is better: rigid PVC supports screen printing, engraving, vacuum forming, available in many colors—standard for signage and decorative panels.
4.5 Large Tanks
PP is better: higher post-weld strength for tanks over 50m³; PVC more common for small and medium tanks.
5. Selection Decision Flow
- Food or drinking water contact? Yes → PP / No → continue
- Working temperature >80°C? Yes → PP / No → continue
- High-gloss appearance or plating needed? Yes → ABS / No → continue
- Strong corrosive chemical media? Yes → PP or CPVC / No → continue
- Large-area welded lining? Yes → PVC / No → choose by price (PP)
As a professional engineering plastics supplier, huagong offers one-stop procurement of PVC, PP, ABS, CPVC and PVDF boards, pipes and profiles, with selection advice and material test reports. Contact us for quotations.
6. FAQ
Q1: ABS vs PP—better for sanitary ware?
ABS is better overall—high gloss, good impact toughness, premium feel, suited to mid-to-high-end sanitary accessories. PP is cheaper and chemically resistant but matte and easy to scratch, used only for low-end parts.
Q2: PVC vs PP—which is better for chemical tanks?
For high temperature or strong corrosion, choose PP; for ambient dilute acids/alkalis with tight budgets, choose PVC. Tanks above 50m³ prefer PP; below 10m³ PVC offers better value. See /blog/pvc-vs-pe-which-is-better.
Q3: Can ABS be used for food containers?
Not recommended. ABS contains acrylonitrile with residual risk in food contact. For food-grade containers, choose PP (GB 4806.7 certified) or HDPE.
Q4: Which is the cheapest among PVC, PP, ABS?
By ton price: PVC < PP < ABS. By board unit price: PVC slightly below PP, ABS highest. Actual price varies with thickness, brand and market.
Q5: What standards do these materials follow?
Rigid PVC board follows GB/T 22789.1; PP board QB/T 5496; ABS board references GB/T 3682. Chemical PVC pipe follows GB/T 4219; PP pipe GB/T 18742. The standard should be specified in purchase contracts.
7. Summary and Action
There is no universal answer to ABS vs PP or PVC vs PP—selection depends on the scenario: PP for high temperature and food, PVC for chemical linings, ABS for high-gloss appearance and electrical housings. Clarify media, temperature and appearance requirements, then consult the comparison table to make the right call.
For full spec sheets, test reports or bulk pricing on PVC/PP/ABS boards and pipes, contact huagong—our engineering plastics team provides professional multi-material selection support.
Related:
- Browse the Engineering Plastics Center for PVC, PP, ABS specs
- Read PVC vs PE Comparison for broader engineering plastic comparisons
- Contact huagong for multi-material comparison and selection advice