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Austenitic stainless steel

A technology of austenitic stainless steel and composition, which is applied in the field of improvement of various material components of austenitic stainless steel alloy composition, can solve problems such as tensile strength, yield strength and elongation weakening, and achieve good wear resistance, Strong acid and alkali corrosion resistance, good toughness

Inactive Publication Date: 2005-08-17
青岛马士基集装箱工业有限公司
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  • Summary
  • Abstract
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Problems solved by technology

In order to reduce the price of austenitic stainless steel, there have also been some designs that reasonably reduce the nickel content in austenitic stainless steel, such as a kind of "austenitic stainless steel" announced by ZL200410041285. The corresponding indicators such as tensile strength, yield strength and elongation have been weakened

Method used

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Embodiment

[0023] The austenitic stainless steel of the present invention can be smelted in a non-vacuum induction furnace or an electric arc furnace. The thermal processing (forging, hot rolling) temperature range of the billet is 1130-1180°C, and the solution heat treatment temperature is 1050-1120°C.

[0024] The austenitic stainless steel of the present invention mainly produces hot-rolled strips, cold-rolled strips, hot-rolled plates and bars, and the like.

[0025] Its composition is (weight%): ≤0.12C, ≤1.00Si, 5.00~7.00Mn, ≤0.045P, ≤0.030S, 2.00~4.00Ni, 16.00~18.00Cr, 1.50~3.50Cu, and the remaining components include Fe and secondary Want impurities.

[0026] The composition of this embodiment is (% by weight): 0.08C, 0.35Si, 5.69Mn, 0.027P, 0.003S, 2.61Ni, 17.55Cr, 2.57Cu, and the remaining components include Fe and minor impurities.

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Abstract

The present invention is one kind of austenitic stainless steel composition and features its composition of C not more than 0.12 wt%, Si not more than 1.00 wt%, Mn 5.00-7.00 wt%, P not more than 0.045 wt%, S not more than 0.030 wt%, Ni 2.00-4.00, Cr 16.00-18.00 and Cu 1.50-3.50 wt% except Fe and other impurity. The austenitic stainless steel composition has relatively low cost, high acid and alkali corrosion resistance, especially high sea water cavitation resistance, high strength, high toughness, high wear resistance, and expansion as high as 40-50 %, and is suitable for use in container, especially ocean shipping container.

Description

Technical field [0001] The invention belongs to the improvement of each material component of the austenitic stainless steel alloy composition; in particular, it relates to a high-manganese low-nickel austenitic stainless steel. Background technique [0002] Austenitic stainless steel alloys are widely used, but their prices are higher. The high cost of the austenitic stainless steel alloy is mainly due to its relatively expensive nickel (Ni). In order to reduce the price of austenitic stainless steel, there have also been some designs that reasonably reduce the nickel content in austenitic stainless steel, such as a kind of "austenitic stainless steel" announced by ZL200410041285. The corresponding indicators such as tensile strength, yield strength and elongation have been weakened. The stainless steel produced according to this design is not suitable for industrial applications, such as the production of containers, but only for fields such as ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/42
Inventor 林润默
Owner 青岛马士基集装箱工业有限公司
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