Deformation of steel can occur at a heat flux of 25 KW/m^2.

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Multiple Choice

Deformation of steel can occur at a heat flux of 25 KW/m^2.

Explanation:
Heat flux is the rate of heat transfer per unit area. For steel, deformation can occur when the heat input is high enough to raise temperature and soften the material under load. The statement specifies that deformation can occur at 25 kW/m^2, so the heat flux that matches this threshold is 25 kW/m^2. Lower values like 5 or 1 kW/m^2 are not sufficient to cause deformation, and a higher value like 50 kW/m^2, while it could also cause deformation, does not match the stated threshold in the item.

Heat flux is the rate of heat transfer per unit area. For steel, deformation can occur when the heat input is high enough to raise temperature and soften the material under load. The statement specifies that deformation can occur at 25 kW/m^2, so the heat flux that matches this threshold is 25 kW/m^2. Lower values like 5 or 1 kW/m^2 are not sufficient to cause deformation, and a higher value like 50 kW/m^2, while it could also cause deformation, does not match the stated threshold in the item.

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