Novel corrosion-resisting special fastener

A corrosion-resistant fastener technology, applied in the field of new corrosion-resistant special fasteners, can solve the problems of not being able to adapt to work requirements, weak chemical corrosion resistance, etc., and achieve excellent stress corrosion resistance and good ductility.

Inactive Publication Date: 2013-04-03
兴化市新迅达不锈钢标准件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, fasteners made of conventional chromium-nickel austenitic stainless steel such as 304 alloy are not strong in chemical corrosion resistance, and fasteners made of conventional stainless steel cannot be adapted to work in some special occasions. Require

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A new type of corrosion-resistant special fastener, its composition mass percentage is: C: 0.030, Si: 1.00, Mn: 2.00, P: 0.045, S: 0.030, Cr: 15.5, Ni: 11.8, Cu: 2.11, Mo: 5.13, Ti: 1.04, A1: 0.35, balance Fe and unavoidable impurities.

Embodiment 2

[0021] A new type of corrosion-resistant special fastener, its composition mass percentage is: C: 0.025, Si: 0.80, Mn: 1.75, P: 0.035, S: 0.020, Cr: 17.5, Ni: 13.8, Cu: 2.05, Mo: 3.88, Ti: 1.08, A1: 0.25, balance Fe and unavoidable impurities.

Embodiment 3

[0023] A new type of corrosion-resistant special fastener, its composition mass percentage is: C: 0.015, Si: 0.90, Mn: 1.00, P: 0.025, S: 0.010, Cr: 19.5, Ni: 15.8, Cu: 1.55, Mo: 3.70, Ti: 1.03, A1: 0.25, balance Fe and unavoidable impurities.

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PUM

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Abstract

The invention discloses a novel corrosion-resisting special fastener which comprises the components of, by mass, no more than 0.030% of C, no more than 1.00% of Si, no more than 2.00% of Mn, no more than 0.045% of P, no more than 0.030% of S, 15.5-20.5% of Cr, 11.3-15.8% of Ni, 1.55-2.25% of Cu, 3.20-5.80% of Mo, and balance of Fe and unavoidable impurities. The special fastener has the advantages of corrosion resistance, good ductility, excellent stress corrosion resistance, excellent compressive strength, and excellent high temperature resistance.

Description

technical field [0001] The invention relates to the technical field of fasteners, in particular to a novel corrosion-resistant special fastener. Background technique [0002] In the prior art, fasteners made of conventional chromium-nickel austenitic stainless steel such as 304 alloy are not strong in chemical corrosion resistance, and fasteners made of conventional stainless steel cannot be adapted to work in some special occasions. Require. Contents of the invention [0003] In order to solve the deficiencies of the prior art, the present invention provides a new type of corrosion-resistant special fastener with corrosion resistance, good ductility, excellent stress corrosion resistance, compressive strength and high temperature resistance. [0004] The present invention adopts the following technical scheme: a new type of corrosion-resistant special fastener, the composition mass percentage of which is: C≤0.030, Si≤1.00, Mn≤2.00, P≤0.045, S≤0.030, Cr: 15.5-20.5, Ni : ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/50
Inventor 朱根玉范军平符红所莫志鹏
Owner 兴化市新迅达不锈钢标准件有限公司
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