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Austenitic Stainless Steel Grade: 1.4306 / 1.4307 (AISI type 304L)

Austenitic Stainless Steel Grade: 1.4306 / 1.4307 (AISI type 304L)

Sep 5, 2017 | |

By reducing the percentage of carbon relative to the base type 1.4301, these qualities, as well as the type 1.4541 in a welded state, are not sensitive to intercrystalline corrosion. The quality 1.4306 has more Ni than the quality 1.4307. However, prolonged use above about 450° C must be avoided because, in such applications, grain boundary carbides can still be produced with all detrimental effects. The advantage of reducing the percentage of carbon relative to the addition of titanium is that neither the deformability nor the polymerizability are adversely affected. This quality has substantially the same characteristics as mentioned...

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Stainless Rollers and Plates

Stainless Rollers and Plates

Aug 15, 2017 | |

The main alloy element in stainless steel is the element chrome. It has been found that at a chromium percentage> 10.5%, the alloy has a good resistance to atmospheric attack, for example. In addition, a number of other alloying elements are important. All of these alloying elements affect the structure of iron, which consists of ferrite at room temperature and at austenite at about 910° C. Alloy elements affect the height of the ferrite / austenite conversion temperature and are therefore subdivided into ferrite stabilizing elements such as chromium, molybdenum and titanium and the austenite stabilizing elements such as...

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Stainless Steel: The Environment, Exchange Rates and Governments

Stainless Steel: The Environment, Exchange Rates and Governments

Jun 22, 2017 | |

Looking at the last 6 months, we are dealing with a few important factors that play a role in determining the price of stainless steel. The Philippine government has closed some nickel mines because the digestion of the NPI (nickel pig iron) is detrimental to the environment. This NPI is a raw material with a very low nickel content, widely used by China for the production of stainless steel. In addition, the Indonesian government indicated that it wanted to levy an export tax of about 10% on the export of nickel. In addition, we have seen the dollar become...

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Austenitic steel

Austenitic steel

Apr 5, 2017 | |

Of the four groups of stainless steel, the austenitic grades are by far the most used. Nickel is the main alloy element in addition to chromium. Nickel stabilizes the high temperature formed austenite, which also maintains this at low temperatures. In an 18% chrome alloy, 8% nickel is already sufficient to maintain the austenitic structure at room temperature. The austenitic steel grades do not exhibit structural changes when heated, so hardening treatments are not possible. Increase in strength can only be due to cold deformation (reinforcement). Depending on the alloy and the degree of deformation, a structural conversion can...

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