The physical properties of Alloy 309S steel plate are crucial for its adaptation to specific working conditions, mainly including the following aspects:

 

Density

 

Value: 7.89 g/cm³

Description: It has a density close to that of most austenitic stainless steels (such as 304 stainless steel) and belongs to medium and high - density metal materials. This property affects the weight calculation and load - bearing considerations in structural design.

 

Thermal properties

 

Specific heat capacity: 502 J/kg·°K (0 - 100°C)
It represents the amount of heat required for a unit mass of 309S steel plate to increase its temperature by 1°C. The stable value indicates that its ability to absorb or release heat during temperature changes is balanced, making it suitable for environments with temperature fluctuations.

Thermal conductivity: 15.6 W/m·°K (100°C)
Its relatively low thermal conductivity means that heat transfer is slow in high - temperature environments, which can reduce heat loss. It is suitable as a structural material for heat insulation or high - temperature containers (such as industrial furnace linings).

Melting point: 1480 - 1530°C
It is much higher than that of ordinary carbon steel (about 1300°C). The extremely high melting point enables it to maintain structural stability in high - temperature working conditions (such as furnaces and incinerators) and not easily fail due to melting.

 

 

 

 

 

 

 

 

 

 

 

 

 

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