DIN 17175 St45.8 Seamless Steel Pipes
What is st45.8 alloy steel pipe material?
st45.8seamless steel tube is used for the construction of boilers, pipelines, pressure vessels and equipment for service up to 600 °C and simultaneous high pressures, where the total stress and the relevant scaling conditions can raise or lower the temperature limit.
DIN 17175 Seamless Steel Tubes For Elevated Temperatures,DIN 17175 St45.8 Seamless Steel Tubes can be used to manufacture steam boilers, pipes, pressure vessels and instruments operating at temperatures up to 600 ° C and at high temperatures.
St45.8 seamless alloy steel pipe is mainly used for heating surface pipes of low and medium-pressure boilers (working pressure is generally not greater than 5.88Mpa, working temperature is below 450°C), and for high-pressure boilers (working pressure is generally above 9.8Mpa, working temperature is below 450℃). Heating surface pipes, economizers, superheaters, reheaters, petrochemical industry pipes, etc., with temperatures between 450°C and 650°C.
Chemical composition of DIN 17175 St45.8 steel tubes
| Grade | Chemical composition | |||||
| C | Si | Mn | P,S | Cr | Mo | |
| St45.8 | ≤0.21 | 0.10-0.35 | 0.40-1.20 | ≤0.030 | / | / |
Mechanical property of DIN 17175 St45.8 seamless steel tubes
| Standard | Grade | Tensile Strength(MPa) | Yield Strength(MPa) | Elongation(%) |
| DIN 17175 | St45.8 | 410-530 | ≥255 | ≥21 |
Seamless Carbon Steel Boiler Tube
Manufacturing: Seamless Process.
External dimensions: 14mm-711mm.
Wall thickness: 2mm-60mm.
Length: Fixed length (6m, 9m, 12m, 24m) or normal length (5-12m).
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