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BS 3059 Steel Boiler And Superheater Tubes
low tensile carbon steel tubes without specitied elevated temperature properties. requirements for plain end, seamless and welded tubes, not exceeding 127mm outside diameter and not exceeding 12.5mm tickness. for use in boilers and super heaters.
Description
Chemical Requirements
| Grade | Mfg. process | chemical composition % | ||||||||
| C max | Si max | Mn | P max | S max | Ni | Cr | Mo | others | ||
HFS 320 | S | 0.16 | - | 0.30 -0.70 | 0.050 | 0.050 | - | - | - | - |
CFS 320 | E | 0.16 | ||||||||
ERW 320 | S | 0.017 | 0.35 | 0.40 -0.80 | 0.045 | 0.045 | - | - | - | - |
CEW 320 | E | |||||||||
Mechanical Properties
| Grade | Tensile Test MPa | Remarks (similar to JIS) | Possibility temperature | ||
| Min Yield point | Tensile strength | ||||
| HFS320 | 195 | 325-480 | STB35 | SRM SEAMLESS | |
| CFS320 | SEAMLESS | ||||
| ERW320 | 215 | 360-500 | STB35 | - | |
| CEW320 | ERW | ||||
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