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- since 1996 -

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WesDyne is an engineering and technical services firm dedicated to providing standard and custom nondestructive examinations (NDE) products and systems

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Technical Discussions
Renaningsih Setjo
Renaningsih Setjo
08:30 Mar-04-2003
Material designation

Dear Colleagues,

At present I have been working in Material Testing Lab. I am doing research on Remaining Life for boiler tubes. The material of the tubes are 15 No.3, 10 Cr No.910, ST 35.8 III.
I have the difficulties to get some data related to the chemical composituion of these materials since I am not familiar with this designation. Dear Friend would you please help me with the equal design. of these materials according to ASTM Code?? ...Please inform..I really appreciated for your help.


Best regards

Ms. Rena Setjo


    
 
 
Uli Mletzko
R & D, Retired
Germany, Joined Nov 1998, 89

Uli Mletzko

R & D, Retired
Germany,
Joined Nov 1998
89
00:23 Mar-04-2003
Re: Material designation

: At present I have been working in Material Testing Lab. I am doing research on Remaining Life for boiler tubes. The material of the tubes are 15 No.3, 10 Cr No.910, ST 35.8 III.
: I have the difficulties to get some data related to the chemical composituion of these materials since I am not familiar with this designation. Dear Friend would you please help me with the equal design. of these materials according to ASTM Code?? ...Please inform..I really appreciated for your help.

Dear Ms. Rena Setjo,
the materials mentioned are according to German standards (DIN), for low or medium temperature boiler applications.

The composition is for

St_35.8 = (C <= 0.17 %, Si <= 0.35 %, Mn >= 0.40 %, Cr <= 0.03 %),
15_Mo_3 = (C 0.12-0.20 %, Si 0.15-0.35 %, Mn 0.50-0.80 %, Cr <= 0.03 %, Mo 0.25-0.35 %),
10_CrMo_9_10 = (C <= 0.15 %, Si 0.15-0.50 %, Mn 0.40-0.60 %, Cr 2.0-2.5 %, Mo 0.9-1.1 %).

The roman number 'III' is for quality level 'three'.

I've used the underscore character '_' within the alloy names. In the original names there have to be blanks/spaces.

The ranking is ascending according to the alloy content of molybdenum and chromium, which is according to the intended temperature level.

I hope this helps to find corresponding alloys according to other standards.

Regards
Uli Mletzko
MPA, NDT group,
University of Stuttgart, Germany



    
 
 

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