Temperature Density Petroleum Lubricating Oil Lubricant Volume Correction ASTM D1250

Overview

Engineering reference data for Temperature Density Petroleum Lubricating Oil Lubricant Volume Correction ASTM D1250 in material science and properties.

Key Formulas

Stress

$\sigma = \frac{F}{A}$

Force per unit area.

Strain

$\varepsilon = \frac{\Delta L}{L_0}$

Change in length per original length.

Hooke's Law

$\sigma = E \varepsilon$

Stress proportional to strain in elastic region.

Thermal Expansion

$\Delta L = \alpha L_0 \Delta T$

Length change due to temperature.

Variables

Practical Calculations & Methodology

The examples demonstrate the core methodology for applying volume correction factors:

Calculating Volume at Base Temperature (15°C/59°F):

$$V_{15^\circ C} = \frac{V_{observed}}{CF}$$

where CF is the correction factor read from the figure for Density@Observed T / Density@15°C.

Calculating Volume at an Observed Temperature:

$$V_{observed} = V_{15^\circ C} \times CF$$

where CF is the correction factor read from the figure for Density@15°C / Density@Observed T.

Key Relationship & Sanity Check: A fundamental physical principle is that volume increases with increasing temperature. Therefore, the volume at the observed (higher) temperature will always be greater than the volume at the base (15°C) temperature. This provides a quick check on your calculation.

References

• Original Source