Pipe Thermal Expansion Calculator Reference Values
Estimate linear thermal expansion of pipe runs from material, length, and temperature change.
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Reference Value Index
This page lists 64 reference values for quick browsing and lookup.
All Reference Values
- Steel, 25 ft, ΔT 25°F = 0.0487 in
- Steel, 25 ft, ΔT 50°F = 0.0975 in
- Steel, 25 ft, ΔT 75°F = 0.1463 in
- Steel, 25 ft, ΔT 100°F = 0.195 in
- Steel, 50 ft, ΔT 25°F = 0.0975 in
- Steel, 50 ft, ΔT 50°F = 0.195 in
- Steel, 50 ft, ΔT 75°F = 0.2925 in
- Steel, 50 ft, ΔT 100°F = 0.39 in
- Steel, 75 ft, ΔT 25°F = 0.1463 in
- Steel, 75 ft, ΔT 50°F = 0.2925 in
- Steel, 75 ft, ΔT 75°F = 0.4388 in
- Steel, 75 ft, ΔT 100°F = 0.585 in
- Steel, 100 ft, ΔT 25°F = 0.195 in
- Steel, 100 ft, ΔT 50°F = 0.39 in
- Steel, 100 ft, ΔT 75°F = 0.585 in
- Steel, 100 ft, ΔT 100°F = 0.78 in
- Copper, 25 ft, ΔT 25°F = 0.0705 in
- Copper, 25 ft, ΔT 50°F = 0.141 in
- Copper, 25 ft, ΔT 75°F = 0.2115 in
- Copper, 25 ft, ΔT 100°F = 0.282 in
- Copper, 50 ft, ΔT 25°F = 0.141 in
- Copper, 50 ft, ΔT 50°F = 0.282 in
- Copper, 50 ft, ΔT 75°F = 0.423 in
- Copper, 50 ft, ΔT 100°F = 0.564 in
- Copper, 75 ft, ΔT 25°F = 0.2115 in
- Copper, 75 ft, ΔT 50°F = 0.423 in
- Copper, 75 ft, ΔT 75°F = 0.6345 in
- Copper, 75 ft, ΔT 100°F = 0.846 in
- Copper, 100 ft, ΔT 25°F = 0.282 in
- Copper, 100 ft, ΔT 50°F = 0.564 in
- Copper, 100 ft, ΔT 75°F = 0.846 in
- Copper, 100 ft, ΔT 100°F = 1.128 in
- CPVC, 25 ft, ΔT 25°F = 0.255 in
- CPVC, 25 ft, ΔT 50°F = 0.51 in
- CPVC, 25 ft, ΔT 75°F = 0.765 in
- CPVC, 25 ft, ΔT 100°F = 1.02 in
- CPVC, 50 ft, ΔT 25°F = 0.51 in
- CPVC, 50 ft, ΔT 50°F = 1.02 in
- CPVC, 50 ft, ΔT 75°F = 1.53 in
- CPVC, 50 ft, ΔT 100°F = 2.04 in
- CPVC, 75 ft, ΔT 25°F = 0.765 in
- CPVC, 75 ft, ΔT 50°F = 1.53 in
- CPVC, 75 ft, ΔT 75°F = 2.295 in
- CPVC, 75 ft, ΔT 100°F = 3.06 in
- CPVC, 100 ft, ΔT 25°F = 1.02 in
- CPVC, 100 ft, ΔT 50°F = 2.04 in
- CPVC, 100 ft, ΔT 75°F = 3.06 in
- CPVC, 100 ft, ΔT 100°F = 4.08 in
- PEX, 25 ft, ΔT 25°F = 0.6075 in
- PEX, 25 ft, ΔT 50°F = 1.215 in
- PEX, 25 ft, ΔT 75°F = 1.8225 in
- PEX, 25 ft, ΔT 100°F = 2.43 in
- PEX, 50 ft, ΔT 25°F = 1.215 in
- PEX, 50 ft, ΔT 50°F = 2.43 in
- PEX, 50 ft, ΔT 75°F = 3.645 in
- PEX, 50 ft, ΔT 100°F = 4.86 in
- PEX, 75 ft, ΔT 25°F = 1.8225 in
- PEX, 75 ft, ΔT 50°F = 3.645 in
- PEX, 75 ft, ΔT 75°F = 5.4675 in
- PEX, 75 ft, ΔT 100°F = 7.29 in
- PEX, 100 ft, ΔT 25°F = 2.43 in
- PEX, 100 ft, ΔT 50°F = 4.86 in
- PEX, 100 ft, ΔT 75°F = 7.29 in
- PEX, 100 ft, ΔT 100°F = 9.72 in
Reference Table
Frequently Asked Questions
Frequently asked questions for Pipe Thermal Expansion Calculator and its reference values.
How is pipe thermal expansion calculated?
Linear expansion is estimated by ΔL = α × L × ΔT, where α is material expansion coefficient, L is length, and ΔT is temperature change.
Why do plastic pipes move more than metal pipes?
Plastics like PEX and CPVC have higher thermal expansion coefficients than metals, so they expand more for the same temperature rise.
When should expansion be considered in plumbing design?
Long straight runs, hot water systems, and large temperature swings often require planning for expansion loops, offsets, or supports.
Is this enough for final support design?
Use it as an estimate. Final support and restraint design should follow manufacturer guidance and applicable plumbing/mechanical codes.
Methodology and Review
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