Thursday, July 31, 2008

[MW:984] RE: 887] RE: 882] alloy steels

Shell Global Solutions International B.V. definition as follows

 

High-alloy steel:  Stainless steels, 12 Cr and higher

Low-alloy steel:  Steels from 0.5 Mo up to 9Cr-1Mo

   Steels from 0.5 up to 9% Ni

Unalloyed steel: Carbon manganese steels, including 0.3 and 0.5 Mo steels

 


From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Bathula Raghuram (Mumbai - PIPING)
Sent: Wednesday, July 02, 2008 1:56 PM
To: materials-welding@googlegroups.com
Subject: [MW:887] RE: 882] alloy steels

 

There is no such clear demarcation, can vary from institution to institution

 

ASM classification as below

Plain carbon steel (<0.2C called as low carbon steel)

LAS <= 8% of total alloying elements

HAS > 8% of total alloying elements

 

By this all your below netioned materials can be called as LAS (except P91), where as even P91 comes under LAS family  in case ASME BPV

 

More views are welcome!

 

-----Original Message-----
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of gajjalla surya prakash
Sent: Tuesday, July 01, 2008 5:24 PM
To: materials-welding@googlegroups.com
Subject: [MW:882] alloy steels

 

 

dear members,

 

how can we classify the alloysteel materials as low alloy /highalloy.

 

if we can classify  then P 91/P22/P11/16M03/DINWB 36

comes under which category.

 

 

surya prakash gajjalla

 

 



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