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Austral Wright Metals – part of the Crane Group of Companies, is the result of the merger of two long established and respected Australian metals distribution companies.Austral Bronze Crane Copper Ltd and Wright and Company Pty Ltd.
Grade 404GP™ can be used in place of Grade 304 stainless steel in most applications.The corrosion resistance of Grade 404GP™ is at least as good as Grade 304, and often better: it is not affected by stress corrosion cracking in hot water and does not sensitize when welded.
Grade 404GP™ is a next-generation ferritic stainless steel manufactured by Japanese premium steel mills using the most advanced next-generation steelmaking technology, ultra-low carbon.
Grade 404GP™ can be processed by all methods used with 304.It’s work hardened similarly to carbon steel, so it doesn’t cause all the familiar hassles to workers using 304.
Grade 404GP™ has a very high chromium content (21%), making it much better than regular ferritic grade 430 in terms of corrosion resistance.So don’t worry that Grade 404GP™ is magnetic – so are all duplex stainless steels such as 2205.
In most applications you can use grade 404GP™ as a general purpose stainless steel instead of the old workhorse grade 304.Grade 404GP™ is easier to cut, fold, bend and weld than 304.This provides a better look – cleaner edges and curves, flatter panels, cleaner construction.
As a ferritic stainless steel, Grade 404GP™ has higher yield strength than 304, similar hardness, and lower tensile strength and tensile elongation.It is much less work hardened – which makes it easier to work with and behaves like carbon steel during manufacturing.
404GP™ costs 20% less than 304.It’s lighter, 3.5% more square meter per kilogram.Better machinability reduces labor, tooling and maintenance costs.
The 404GP™ grade is now available from stock from Austral Wright Metals in 0.55, 0.7, 0.9, 1.2, 1.5 and 2.0 mm thick coils and sheets.
Finished as No4 and 2B.2B finish on Grade 404GP™ is brighter than 304.Do not use 2B where appearance is important – gloss may vary with width.
Grade 404GP™ is solderable.You can use TIG, MIG, spot welding and seam welding.See the Austral Wright Metals data sheet “Welding Next Generation Ferritic Stainless Steels” for recommendations.
Figure 1. Slat spray test corrosion samples of 430, 304 and 404GP stainless steel after four months in 5% salt spray at 35ºC
Figure 2. Atmospheric corrosion of 430, 304 and 404GP stainless steels after one year of actual exposure beside Tokyo Bay.
Grade 404GP™ is a new generation of ferritic stainless steel grade produced by Japanese high-quality steel mill JFE Steel Corporation under the brand name 443CT.This grade is new, but the factory has years of experience producing similar high quality grades and you can be sure it won’t let you down.
Like all ferritic stainless steels, Grade 404GP™ should only be used between 0ºC and 400°C and should not be used in pressure vessels or structures that are not fully certified.
This information has been reviewed and adapted from material provided by Austral Wright Metals – Ferrous, Non-Ferrous and High Performance Alloys.
For more information on this source, visit Austral Wright Metals – Ferrous, Non-Ferrous and Performance Alloys.
Austral Wright Metals – Ferrous, non-ferrous and high performance alloys.(June 10, 2020).404GP Stainless Steel – Ideal Alternative to 304 Stainless Steel – Features and Benefits of 404GP.AZOM.Retrieved July 22, 2022 from https://www.azom.com/article.aspx?ArticleID=4243.
Austral Wright Metals – Ferrous, non-ferrous and high performance alloys.”404GP Stainless Steel – An Ideal Alternative to 304 Stainless Steel – Features and Benefits of 404GP”.AZOM.July 22, 2022..
Austral Wright Metals – Ferrous, non-ferrous and high performance alloys.”404GP Stainless Steel – An Ideal Alternative to 304 Stainless Steel – Features and Benefits of 404GP”.AZOM.https://www.azom.com/article.aspx?ArticleID=4243.(Accessed 22 July 2022).
Austral Wright Metals – Ferrous, non-ferrous and high performance alloys.2020. 404GP Stainless Steel – The Ideal Alternative to 304 Stainless Steel – Features and Benefits of 404GP.AZoM, accessed July 22, 2022, https://www.azom.com/article.aspx?ArticleID=4243.
We are looking for a lightweight replacement for SS202/304.The 404GP is ideal, but needs to be at least 25% lighter than the SS304.Is it possible to use this composite/alloy.Ganesh
The views expressed here are those of the author and do not necessarily reflect the views and opinions of AZoM.com.
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