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There are many kinds of seamless tube, today we take the 16Mn seamless steel pipe as an example, to introduce.
16Mn seamless steel tube is a low alloy high strength structural steel, with the carbon content of 0.1%-0.25%, the main alloying elements manganese, silicon, vanadium, niobium and titanium, etc., it contains <3%. According to the intensity of 300, 350, 400 and 450***, and so on 4 levels. Mainly Q295, Q390, Q420, Q460, Q345. : "Q" yield "bend" in the words of the Chinese phonetic alphabet uppercase prefix, followed by digital for the grade minimum yield point (sigma S) value, followed by the symbol is in accordance with the steel impurities (such as sulfur, phosphorus) content from high to low, and with the change of carbon and manganese and divided into a, B, C, D four. Which a and B grade steel commonly known chemical composition of 16Mn steel seamless steel pipe: C:0.12~0.20; Mn:1.20~1.60; Si:0.20~0.55; tensile strength: 470~660 cattle / mm2; yield strength: 275~345 cattle / mm2; elongation: 21%. [1]
Hot rolled or normalizing
16Mn seamless steel pipe and 19Mng, 16MnR merged into Q345R. Q345R is ordinary low-alloy steel, boiler and pressure vessel steels commonly used in that state of delivery: hot-rolled or normalized, belonging to the low alloy steel, the Mn content is relatively low. The performance of 20G (412-540) approximation, the tensile strength (450-655) slightly, elongation was 19-21%, ratio of 20G is greater than 24% difference. Q345R process reference standard GB713-2008.
16Mn is a common low alloy steel seamless steel pipe, boiler pressure vessel steels, hot rolling or normalizing. Belong to low alloy steel, low content of Mn. The performance of 20G (412-540) approximation, the tensile strength (450-655) slightly, elongation was 19-21%, ratio of 20G is greater than 24% difference.
16Mn seamless steel pipe is a pressure vessel special board for 340*** grade, which has good comprehensive mechanical properties and technological performance. Phosphorus and sulfur content |
| Company: |
Heibei New Sinda Pipes Manufacture Co.,Ltd
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| Contact: |
Mr. wang geng |
| Address: |
Mengcun Hui Autonomous County North Industrial Zone |
| Postcode: |
062450 |
| Tel: |
86-0317-6899188 |
| Fax: |
86-317-6899899 |
| E-mail: |
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