BOILER PIPE
Boiler tubes is a one of seamless pipe. Manufacturing methods is the same as seamless tube, but it has the stringent requirements for manufacture of steel pipes.
Specification for ASTM 1020/ 1045 Seamless Steel Pipe
Chemical Composition of seamless steel pipe
Material | Chemical composition (%) | |||||||
C | Si | Mn | P | S | Ni | Cr | Cu | |
20#, ASTM 1020, DIN CK20, JIS S20C | 0.17~0.24 | 0.17~0.37 | 0.35~0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 |
45#, ASTM 1045, DIN CK45, JIS S45C | 0.42~0.50 | 0.17~0.37 | 0.60~0.90 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 |
Mechanical Properties of seamless steel pipe
Steel material | Tensile strength Mpa | Yield strength Mpa | Elongation % | Hardness | Straightness |
20#, ASTM 1020, DIN CK20, JIS S20C | ≥410 | ≥245 | ≥25 | ≤156HB | 0.3~1.0 |
45#, ASTM 1045, DIN CK45, JIS S45C | ≥600 | ≥355 | ≥16 | ≤HRC62 | 0.3~1.0 |
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