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Other General Standards: Corrosion, Weldments, Fire Rating, Certificates etc.

Chemical compositions of stainless steels to BS EN 10253-3 and 10253-4

BS EN 10253-3 is the material standard for austenitic and duplex stainless steels for butt-welded fittings without specific inspection requirements. BS EN 10253-4 is the material standard for austenitic and duplex stainless steels for butt-welded fittings with specific inspection requirements.

European EN Standard Grade Summary

There are now a large number of EN standards for stainless steel products. It is not always easy to know which grades belong to which standard. You can of course look through the summary of each one on this website. However, this can be quite time consuming. This article is designed to provide a quick guide to check which standard a particular grade appears in.

European Standards - Referenced Standards for Stainless Steel Products

The EN standards for stainless steel are quite complex and it is sometimes hard to know which standards you need to know about in order to fulfil all the requirements of an order. This article is an attempt to simplify the path through the maze of standards that now exists.

Related austenitic stainless steel grades

The table is intended to relate former BS, En, German and Swedish grade designations to the current EN steel numbers, AISI grades ('grades' in (brackets) are not a true AISI grades) and UNS (Unified Numbering System) numbers. The table is based on the 'wrought' ie long products (bars etc), flat products (plates etc) steel numbers published in EN 10088 and related standards. Castings products use different compositions and so have their own steel numbers in EN 10283. The related castings grades in both EN 10283 and BS 3100 are included in the table.

Dual (multiple) certification of stainless steel products

Although dual or multiple certification can mean the issue of two separate EN 10204 certificate types for the same inspected / tested or delivered batch of steel, the term normally infers the mention of more than one standard or grade (or both) on the same test certificate.

Chemical compositions of stainless steels to BS 3146-2

BS 3146-2 is the material standard for stainless steel and some nickel based alloy castings, to be made by the investment (or lost wax) process. Martensitic, precipitation hardening, austenitic austenitic-ferritic (duplex) grades are included. The chemical composition of the stainless steel and some nickel based alloys in the standard are listed.

Chemical composition of stainless steel castings to BS EN 10283

BS EN 10283 is the material standard for stainless steel castings for corrosion resisting purposes. Martensitic, precipitation hardening, austenitic and austenitic-ferritic (duplex) grades are included. The chemical composition of all the grades of stainless steel covered in the standard are listed.

Chemical composition of stainless steels to BS 3100

BS 3100, Steel castings for general engineering purposes, was published in 1991 and covers a wide range of steel casting grades. These include the stainless steels in the following tables. Some of these grades are similar to grades published more recently in BS EN 10283, as European grades, but BS 3100 uses the 'traditional' BS grade designation types. This table should be useful in identifying some of the older 'BS' castings grades.

BS & ASTM Standard Listings

ASTM (American Society for Testing and Materials) standards are listed in sections covering flat and long products, tubes and pipes, forgings and castings in stainless steels. Standards listed include ASTM A450, A480, A484, A555, A167, A176, A666, A693, A276, A314, A493, A564, A565, A582, A182, A268, A269, A312, A358, A403, A409, A511, A554, A632, A731, A789, A790, A813, A814, A473, A705, A297, A743, A744 , A890, A999 and A1016. LAST REVIEWED 9th January 2012

European EN Standard Grade Summary

There are now a large number of EN standards for stainless steel products. It is not always easy to know which grades belong to which standard. You can of course look through the summary of each one on this website. However, this can be quite time consuming. This article is designed to provide a quick guide to check which standard a particular grade appears in.

European Standards - Referenced Standards for Stainless Steel Products

The EN standards for stainless steel are quite complex and it is sometimes hard to know which standards you need to know about in order to fulfil all the requirements of an order. This article is an attempt to simplify the path through the maze of standards that now exists.

Chemical composition of stainless steels to BS 970

BS 970 has covered a wide range of long product forms steel grades and finishes. Stainless steels have appeared in various parts of different issues of BS 970, but were last shown only in parts 1 and 3. BS 970 also covered some low alloy steel grades as well as stainless steels. With the exception of forged bars, all stainless steels are now withdrawn from all parts of BS 970 and are now covered by either BS EN 10088-3 (stainless grades) or BS EN 10095 (heat-resisting grades). BS 970 should not be used for specifying new products, but may still be included in specifications for products originally designed before 1995 and so is included here for reference purposes only. Long products for pressure purposes are now covered be BS EN 10272

Fire resistance rating and testing of stainless steels

The inherent oxidation resistance and elevated temperature strength of stainless steels finds useful application in buildings and structures where fire resistance is important. The most useful family of stainless steels for these applications is the austenitics, but the short-term nature of fire means that embrittlement should not be practical issue and so the ferritic and duplex families can also be considered.

British standards for stainless steels for general applications

The table shows both current and obsolete standards (where these may be of current interest) in the 'Status' column. 'C' is current and 'W' is withdrawn. The 'date' is the current publication year.

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