Question 1

What is a gigapascal?

Accepted Answer

1 GPa = 1 billion pascals = 10,000 bar = 145,000 PSI. Used for material strength and extreme pressures.

Question 2

Where are gigapascals used?

Accepted Answer

Material science (tensile strength), diamond anvil cells (300 GPa+), Earth's core pressure (360 GPa).

Question 3

What pressure units do different industries use?

Accepted Answer

PSI in US/UK automotive and HVAC. Bar/kPa in European engineering. mmHg/torr in medicine. Atmospheres in diving and altitude.

Question 4

Is gauge pressure different from absolute pressure?

Accepted Answer

Yes! Gauge pressure reads 0 at atmospheric pressure. Absolute pressure adds atmospheric (~14.7 psi). Vacuum gauge shows negative gauge pressure.

Gigapascal to PSI Pressure Converter - Free Online Tool

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