1. What is Specific Gravity to lb/in³ Conversion?

Definition: This calculator converts specific gravity (SG) to density in pounds per cubic inch (lb/in³).

Purpose: It helps engineers, scientists, and material specialists convert between these common density measurement units.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \rho \) — Density in pounds per cubic inch (lb/in³)
• \( SG \) — Specific gravity (unitless)
• \( 0.036127 \) — Conversion factor (density of water in lb/in³)

Explanation: Specific gravity is multiplied by the density of water (0.036127 lb/in³) to get the material's density in lb/in³.

3. Importance of Density Conversion

Details: Accurate density conversions are essential for material selection, buoyancy calculations, and engineering design.

4. Using the Calculator

Tips: Enter the specific gravity value (must be > 0). The result will show the equivalent density in lb/in³.

5. Frequently Asked Questions (FAQ)

Q1: What is specific gravity?
A: Specific gravity is the ratio of a material's density to the density of water at 4°C (1 g/cm³ or 0.036127 lb/in³).

Q2: Why is 0.036127 used in the formula?
A: This is the density of water in lb/in³, which serves as the reference for specific gravity calculations.

Q3: What's a typical specific gravity for common materials?
A: Aluminum ~2.7, Steel ~7.85, Gold ~19.32, Water (by definition) = 1.0.

Q4: How precise is this conversion?
A: The conversion is mathematically exact, but actual material densities may vary slightly with temperature and purity.

Q5: Can I convert lb/in³ back to specific gravity?
A: Yes, divide the lb/in³ value by 0.036127 to get specific gravity.