Density and specific heat of the boiler steel. Physical and mechanical properties.
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Thermophysical parameters of boiler steels
The most important performance characteristic of all boiler steels is the stability of their heat capacity, heat conductivity and density in a given temperature range (usually not lower than 350… 400 ° C). The thermophysical parameters of the brand 15ХМФ are given below.
| Operating temperature, ° С | Modulus of elasticity, GPa | Thermal Diffusivity, deg-1 | Thermal conductivity, W / mK | Density, kg / m 3 |
| 20 | 214 | - | - | 7800 |
| 100 | 208 | 0,00112 | 41.58 | |
| 200 | 201 | 0.00117 | 40.3 | |
| 300 | 194 | 0.00125 | 38.6 | |
| 400 | 187 | 0,00130 | 36.9 | |
| 500 | 177 | 0.00135 | 32.7 | |
| 600 | 169 | 0,00137 | 34.0 |
Thus, for boiler steels of this type, an acceptable temperature range of application is 20… 600 ° C. The supplier Avlob offers to buy a boiler steel at a bargain price. The price is the best in this segment of rental.
Technical specifications
The boiler room differs from conventional steel with its increased ductility characteristics and a lower propensity to harden after plastic deformation and rolling. This makes it possible, without the introduction of intermediate annealing, to produce from the sheet metal the stretching or flexible rather complicated parts of steam and hot water boilers. The tightness is also ensured by the absence of cracking during heating, and also after casing of the joints.
Weldability
Taking into account that welding is often used during boiler assembling, all grades of boiler steels have increased ability to weld.
Control
Taking into account the risks in case of breach of the tightness of boilers and other steam installations, all profiles of the sheet steel boiler are subjected to ultrasonic inspection of the integrity of the steel sheet. For substandard fusions, pores are possible, which are formed when cooling the material subjected to hot rolling.
Delivery, price
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