CPVC 4120
ASTM D1784 Cell Class 23447
CPVC 4120 is a chlorinated PVC compound to ASTM D1784 cell class 23447, formulated for hot and cold water distribution and fire-sprinkler pipe.
Reference datasheet — CPVC 4120 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
CPVC 4120 grades and fills
CPVC 4120 is supplied in 6 conditions, soft to hard.
Compare all 6 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Impact-modified CPVC | Elevated acrylic/MBS modifier loading for cold-climate installation, thin-wall tube and drop-impact-critical parts. | 44 | 48 | 45 | 78 Shore D |
Injection-molding fitting compound | Lower-viscosity 23447 compound for thick-wall socket fittings and valve bodies; slightly lower notched impact than extrusion grade. | 51 | 54 | 18 | 81 Shore D |
Low smoke / plenum-rated flame-retardant compound | Use where UL 94 5VA and ASTM E84 25/50 flame-spread/smoke performance is mandated (plenum spaces, electrical duct). | 51 | 54 | 20 | 83 Shore D |
UV-stabilized / outdoor-exposure compound | TiO₂-loaded, UV-stabilized version for exposed above-ground piping; still recommended to be painted with light-colored latex. | 52 | 55 | 24 | 82 Shore D |
Industrial Schedule 80 pipe/duct compound | Higher-temperature industrial process piping, chemical drain and corrosive fume duct up to 93–100 °C. | 53 | 56 | 24 | 83 Shore D |
20 % glass-fiber reinforced CPVC | Choose for rigid ducting, pump/valve components and supports needing higher stiffness, creep resistance and lower CTE. | 75 | 3 | 85 Shore D |
Supply forms, finishes and certifications
Ways CPVC 4120 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
CTS-HW | Hot/cold potable water tubing compound | Certification |
FS-ORG | Fire-sprinkler pipe compound | Certification |
STDDefault | Standard CPVC 4120 pipe/fitting compound | Standard supply |
What is CPVC 4120?
CPVC 4120 is a chlorinated PVC compound to ASTM D1784 cell class 23447, formulated for hot and cold water distribution and fire-sprinkler pipe. The added chlorine lifts the maximum service temperature to 93 °C while keeping solvent-cement jointing, 55 MPa tensile strength, a 3 GPa modulus and 25 % elongation; CTS hot-water, Schedule 80 industrial, impact-modified, 20 % glass-filled, 5VA and UV-stabilised versions are catalogued. It costs more than PVC-U, is attacked by plasticised vinyl, ammonia-based sealants and petroleum cutting oils, and must never be joined with PVC cement or PVC rod. PVC 1120 is the cold-water alternative. CPVC 4120 has a density of 1.53 g/cm³ (0.0553 lb/in³), heavier than 89% of polymer grades. Its glass-transition temperature is 120°C (248 °F). CPVC 4120 has a yield strength of 52 MPa (7.54 ksi) and a tensile strength of 55 MPa (7.98 ksi) — stronger than 56% of polymer grades. Elongation at break is 25% and the elastic modulus is 3 GPa (0.435 Msi).
What is CPVC 4120 used for?
- hot & cold water piping
- fire sprinkler systems
- industrial process piping
Advantages
- Good corrosion resistance — 92/100, better than 91% of polymer grades
- Low moisture uptake — 0.04%, better than 86% of polymer grades
- Low embodied carbon — 2.9 kg CO₂/kg, better than 85% of polymer grades
- Easy to machine — 80/100, better than 84% of polymer grades
- Low, predictable mold shrinkage — 0.4%, better than 82% of polymer grades
Limitations
- Heavy — 1.53 g/cm³ (0.0553 lb/in³), worse than 89% of polymer grades
- Poor heat conductor — 0.14 W/m·K (0.0809 BTU/hr·ft·°F), worse than 81% of polymer grades
CPVC 4120 properties
Typical room-temperature values; bars are the position among polymer grades.
Physical5
CPVC 4120 has a density of 1.53 g/cm³ (0.0553 lb/in³), heavier than 89% of polymer grades. Its glass-transition temperature is 120°C (248 °F).
Mechanical16
CPVC 4120 has a yield strength of 52 MPa (7.54 ksi) and a tensile strength of 55 MPa (7.98 ksi) — stronger than 56% of polymer grades. Elongation at break is 25% and the elastic modulus is 3 GPa (0.435 Msi).
Thermal11
CPVC 4120 is rated for continuous service to 93°C (199 °F). It conducts heat at 0.14 W/m·K (0.0809 BTU/hr·ft·°F), worse than 81% of polymer grades. Thermal expansion is 65 µm/m·K (36.1 µin/in·°F).
Electrical7
CPVC 4120 is an electrical insulator with a dielectric strength of 22 kV/mm (558.8 V/mil) and a resistivity of 1×10¹³ Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (92/100), better than 91% of polymer grades. UV resistance is fair.
Sustainability4
Producing a kilogram of CPVC 4120 takes about 72 MJ of energy and emits 2.9 kg of CO₂ — less than 93% of polymer grades. Typical recycled content is 2%.
Manufacturability7
CPVC 4120's machinability is very good (80/100, better than 84% of polymer grades); weldability very good (70/100); formability good (55/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the polymer family
Yield strength against density for every polymer grade FabDigit runs. CPVC 4120 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CPVC 4120
Is CPVC 4120 easy to machine?
Machines easily with sharp, high-rake carbide or HSS tools at moderate speed and generous chip clearance; use air or water-soluble coolant (no petroleum cutting oils) and avoid frictional heat that causes local degradation/HCl release.
Can CPVC 4120 be welded?
Joined mainly by two-step CPVC primer + solvent cement (ASTM F493) or threaded/flanged connections; hot-gas and hot-plate welding with CPVC rod work for sheet/duct but never use PVC cement or PVC rod.
Can CPVC 4120 be formed, bent or molded?
Extrude/mold at 185–215 °C melt with corrosion-resistant (Hastelloy/nitrided) screws and dies, no dead spots, and purge with PE at shutdown; sheet thermoforms at 130–155 °C, cold bending is not recommended.
CPVC 4120 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 |
|---|---|---|
| impact modifier (acrylic / MBS / CPE)sets Izod cell digit | 3 – 9 | 6 |
| organotin heat stabilizermethyl/butyl tin mercaptide; potable-water compliant | 1.5 – 3.5 | 2.5 |
| lubricants (oxidized PE, paraffin wax, cinternal + external lubrication for fusion control | 1 – 3 | 2 |
| processing aid (acrylic) | 0.5 – 2 | 1 |
| titanium dioxide / pigmenttan (CTS), orange (sprinkler), gray (Sch 80) | 1 – 5 | 2 |
| antimony trioxide / smoke suppressant (oonly in 5VA / low-smoke variants | 0 – 3 | 0 |
| CPVC resin (chlorinated poly(vinyl chlorbase resin per ASTM D1784 cell 2 (CPVC) | ≥ 80 (balance) |
What surface finishes work on CPVC 4120?
Solvent-wipe and paint with light-colored acrylic/latex for outdoor UV protection; can be printed, ultrasonically inserted or mechanically fastened — do not use plasticized vinyl tape, ammonia-based sealants or aggressive solvent cleaners on the surface.
Equivalent designations
Standards and trade names that resolve to CPVC 4120 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- D1784 Cell Class 23447
- Other
- NSF 61
How much does CPVC 4120 cost?
CPVC 4120 is a standard-cost polymer ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
CPVC 4120 — frequently asked
What is CPVC 4120 used for?
CPVC 4120 is typically used for hot & cold water piping, fire sprinkler systems and industrial process piping. In short: hot-water rated rigid vinyl; 93 °C service temperature; sprinkler-listed piping compound.
What is the yield strength of CPVC 4120?
CPVC 4120 has a typical yield strength of 52 MPa (7.54 ksi) and a tensile strength of 55 MPa (7.98 ksi) — stronger than 56% of polymer grades. Strength varies by condition: see the 6 listed tempers.
Is CPVC 4120 easy to machine?
Yes — machinability is rated very good (80/100, better than 84% of polymer grades). Machines easily with sharp, high-rake carbide or HSS tools at moderate speed and generous chip clearance; use air or water-soluble coolant (no petroleum cutting oils) and avoid frictional heat that causes local degradation/HCl release.
Can CPVC 4120 be welded?
Yes — weldability is rated very good (70/100). Joined mainly by two-step CPVC primer + solvent cement (ASTM F493) or threaded/flanged connections; hot-gas and hot-plate welding with CPVC rod work for sheet/duct but never use PVC cement or PVC rod.
What surface finishes work on CPVC 4120?
Solvent-wipe and paint with light-colored acrylic/latex for outdoor UV protection; can be printed, ultrasonically inserted or mechanically fastened — do not use plasticized vinyl tape, ammonia-based sealants or aggressive solvent cleaners on the surface.
Can CPVC 4120 be formed, bent or molded?
Extrude/mold at 185–215 °C melt with corrosion-resistant (Hastelloy/nitrided) screws and dies, no dead spots, and purge with PE at shutdown; sheet thermoforms at 130–155 °C, cold bending is not recommended.
What is the maximum service temperature of CPVC 4120?
CPVC 4120 is rated for continuous use to about 93°C (199 °F), and briefly to 105°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does CPVC 4120 cost?
CPVC 4120 is a standard-cost polymer ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- ASTM D1784 — Rigid PVC and CPVC Compounds (cell classification) — ASTM International (2020)
- ASTM D2846 / F441 / F442 — CPVC CTS and Schedule 40/80 pipe and tubing — ASTM International (2021)
- NSF/ANSI 61 & 14 — Drinking Water System Components / Plastic Piping System Components — NSF International (2023)
- TempRite CPVC pipe and fittings compound property data — Lubrizol Advanced Materials (2023)
- Engineered Materials Handbook Vol. 2: Engineering Plastics — ASM International (1988)
- PPI TR-21 Thermal Expansion and Contraction of Plastic Pipe — Plastics Pipe Institute (2019)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.