Chromium-manganese-copper-molybdenum series austenite corrosion-resistant wear-proof stainless steel

An austenitic and stainless steel technology, applied in the field of chromium-manganese-copper-molybdenum-based austenitic corrosion-resistant and wear-resistant stainless steel, can solve the problems of high tensile strength, poor corrosion resistance, poor cold heading and stamping performance, etc., and achieve toughness. And the effect of excellent corrosion resistance and wear resistance, saving metal resources, and good comprehensive performance

Inactive Publication Date: 2008-03-26
江苏省方通新型不锈钢制品股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chromium-manganese-nitrogen series stainless steel (hereinafter referred to as 200 series steel) replaces Ni with Mn-N, the material cost is significantly reduced, and a series of changes occur in performance. After reducing Ni, in order to ensure the austenite structure must have sufficiently high Mn, C and N to increase the nickel equivalent, so the chromium manganese nitrogen series stainless steel has the following problems: (1) The tensile strength after solution treatment is high, generally 800-1100MPa; (2) The cold work hardening rate rises sharply, and the cold work strengthening coefficient K >15, the processing is difficult and the process cost increases; (3) 200 series steel has poor bending forming,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A chromium-manganese-copper-molybdenum-based austenitic corrosion-resistant and wear-resistant stainless steel, the mass percentage of which is: C0.11, Mn16.88, Si0.39, P0.054, S0.003, Cr16.05, N0.16, Cu1.65, Mo0.25, Ni1.08, Re0.044, remaining iron and unavoidable impurities, its yield strength is 375MPa, tensile strength is 700MPa, elongation δ54.5%. According to the GB / T10125-1997 test method, the sample is subjected to a 24-hour continuous spray test under the conditions of 5% NaCl, temperature (35±2) °C, and pH6.5-7.2; according to the GB / T6461-2002 method evaluation, chromium manganese copper The protection level of molybdenum-based austenitic corrosion-resistant and wear-resistant stainless steel is 9.5; according to the GB / T4334.5-2000 test method, the sample is subjected to 16 boiling tests in sulfuric acid-copper sulfate solution. After inspection, chromium manganese copper molybdenum It is an austenitic corrosion-resistant and wear-resistant stainless steel wi...

Embodiment 2

[0038] A chromium-manganese-copper-molybdenum-based austenitic corrosion-resistant and wear-resistant stainless steel, the mass percentage of which is: C0.10, Mn14.48, Si0.70, P0.020, S0.007, Cr16.28, N0.18, Cu1.50, Mo0.18, Ni0.40, Nb0.095, Re0.005, remaining iron and unavoidable impurities, its yield strength is 440MPa, tensile strength is 770MPa, elongation δ61.5%. According to the GB / T10125-1997 test method, the sample is subjected to a 24-hour continuous spray test under the conditions of 5% NaCl, temperature (35±2) °C, and pH6.5-7.2; according to the GB / T6461-2002 method evaluation, chromium manganese copper The protection level of molybdenum-based austenitic corrosion-resistant and wear-resistant stainless steel is grade 9; according to the GB / T4334.5-2000 test method, the sample is subjected to a 16-hour boiling test in sulfuric acid-copper sulfate solution. After inspection, chromium manganese copper Molybdenum-based austenitic corrosion-resistant and wear-resistant st...

Embodiment 3

[0040] A chromium-manganese-copper-molybdenum-based austenitic corrosion-resistant and wear-resistant stainless steel, the mass percentage of which is: C0.09, Mn17.16, Si0.69, P0.034, S0.003, Cr16.85, N0.26, Cu2.10, Mo0.85, Ni0.88, Re0.06, remaining iron and unavoidable impurities, its yield strength is 380MPa, tensile strength is 700MPa, elongation δ54.5%. According to the GB / T10125-1997 test method, the sample is subjected to a 24-hour continuous spray test under the conditions of 5% NaCl, temperature (35±2) °C, and pH6.5-7.2; according to the GB / T6461-2002 method evaluation, chromium manganese copper The protection level of the molybdenum-based austenitic corrosion-resistant and wear-resistant stainless steel is 9.5; according to the GB / T4334.5-2000 test method, the sample is subjected to a 16-hour boiling test in sulfuric acid-copper sulfate solution. After inspection, chromium manganese copper Molybdenum-based austenitic corrosion-resistant and wear-resistant stainless st...

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Abstract

The present invention discloses one kind of anticorrosive and antiwear Cr-Mn-Cu-Mo austenite stainless steel comprising C 0.06-0.11 wt%, Mn 14-19 wt%, Si 0-3 wt%, P not more than 0.054 wt%, S not more than 0.03 wt%, Cr 16-18 wt%, N 0.1-0.4 wt%, Cu 1.0-2.5 wt%, Mo 0-3 wt%, Ni 0-2 wt%, Re 0-0.22 wt%, and Fe and inevitable impurity for the rest. The Cr-Mn-Cu-Mo austenite stainless steel has high strength, high toughness, high wear resistance, low nickel content and relatively low production cost.

Description

technical field [0001] The invention relates to austenitic stainless steel, in particular to a chromium-manganese-copper-molybdenum-based austenitic corrosion-resistant and wear-resistant stainless steel, which is used to replace the traditional 18-8 type austenitic stainless steel. Background technique [0002] 18-8 series austenitic stainless steel, such as 1Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni9, etc. are traditional austenitic stainless steel, commonly known as "304". , It has been widely and stably used in production for a long time. However, due to the high content of precious metal Ni in this type of steel, the product price is very expensive. In addition, Ni resources are very scarce in the world, and the self-strength of this type of steel is low, and its resistance to wear and corrosion is relatively small. Therefore, a wider application space and many application fields are limited. Therefore, the development of a nickel-saving type that can replace the traditional 18-8 ...

Claims

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Application Information

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IPC IPC(8): C22C38/38C22C38/58
Inventor 方荣华
Owner 江苏省方通新型不锈钢制品股份有限公司
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