Material No.: AISI 347

DescriptionChemical
composition
Physical
mechanical
properties
Temparature
information
StandardsProcess
information
Application
Certification
ProductsAll

Description

EN symbol (short)X6CrNiNb18-10
Material No.1.4550
UNSS 34700
Grade Tp347
AFNORX6CrNiNb18-10 NF EN 100088-1 (06/2005) (FR)
BSX6CrNiNb18-10 / B.S.EN 10088-1 (06-2005) (GB)
Density kg/dm37,9
Hardness HB
Rockwell Hardness Number max.
<=215

B 90 ( TP347-ASTM A 249)
Compositionchromium nickel steel
CategoryStainless steels
steel, resistant to rust and acids
Structureaustenitic
Corrosiongood resistance to intercrystalline corrosion
non-corroding
Additional characteristicschemically resistant

Chemical Composition

 CMnPSCrSiNi Nb
AISI 347Min %    17,00 9,00   
Max %0,082,000,0450,03020,001,0013,00   
ASTM A312 (S 34700)-(AISI 347)
1.4550Min %    17,00 9,00 Nb (10 x C<=1,00)  
Max %0,082,000,0450,01519,001,0012,00   
(Key to steel 2010)
S 34700Min %    17,00 9,00   
Max %0,082,000,0450,03020,001,0013,00   
ASTM A 312 (S 34700)-(AISI 347)

Physical properties

PropertyValue
Density: kg/dm37,9
Hardness: HB
Rockwell Hardness Number max.
<=215

B 90 ( TP347-ASTM A 249)
temperature1,0% Yield strength
in high temperatures
0,2% Yield strength
in high temperatures
°C / °FRp 1,0Rp 0,2
N/mm2 /ksiN/mm2 /ksi
100 / 212229 / 33,21177 / 25,67
200 / 392186 / 26,98157 / 22,77
300 / 572167 / 24,22136 /19,72
400 / 752156 / 22,62125 / 18,13
500 / 932149 / 21,60118 / 17,11
ksi value calculated

Mechanical properties (20°C / 68°F)

1 % Yield strength Rp1,0 (Mpa /ksi)
Yield strength ksi (Mpa)
<=240 / 34,8
30 /205

solution annealed

TP 347 (ASTM A249)
0,2%Yield strength Rp 0,2 (Mpa /ksi)<=205/ 29,7
Tensile strength Rm (Mpa / ksi
Tensile strength ksi (MPa)
500-700 / 72,5- 101,5
75 /515

solution annealed

TP 347 (ASTM A249)
Elongationmin.(%)
Elongation min.%
35
35
lengthwise
TP 347 (ASTM A249)
impact work ISO-V (J)100/60(lengthwise/
transverse)
ksi value calculated 

Temparature information

Application area
Operation temperature-454 ºF  to 1652 ºF minimum operationg temperature -454°F
only in strain situation III
Solution heat treatment
Working temperature1868 ºF  to 2012 ºF 
Explanation reportcool down: air / water
Solution heat treatment
Working temperature2102 ºF  to 1292 ºF 
Explanation reportcool down:air

Standards / information

StandardsDesciption
ASTM A 213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler,Superheater,and Heat-Exchanger Tubes
ASTM A 249 Standard Specification for Welded austenitic steel boiler, Superheaters, heat-exchangers,and condenser Tubes
DIN EN 10028-1 (09/2005)flat products made from steel for pressure tanks Part 1 General requirements
DIN EN 10028-7 (02/2008)flat products made from steel for pressure tanks Part 7: Stainless steel
DIN EN 10088-2 (09/2005)stainless steel; sheet metal and ribbons out of corrosion resistant steel for general purposes
DIN EN 10216-5 (11/2004+B1)Seamless steel tubes under compression load Stainless steel tubes
DIN EN 10217-7 (05/2005)Welded steel tubes under compression load. Stainless steel tubes
DIN EN 10296-2 (02/2006)welded circular steel pipes for machine construction and general technical applications, stainless steel
DIN EN 10297-2 (02/2006)seamless circular steel pipes for machine construction and general technical applications, stainless steel

Process information

Welding
 - Material classification acc. CEN ISO/TR 156088.1
 - Typewell weldable
WIG
MAG solid wire
manual arc welding (E)
 - Add. material1.4551;1.4316:1.4551
 - Hintsspecial post heat treating not required

Main fields of application

Details of applicationcertified for delivery acceptance obligating pressure containers in reference to AD data sheet W2
Certifications
food processing industryMolkereianlagen
Film- und Fotoindustrie
object of utility budgetary
Chemical Industryzur Verarbeitung von Salpetersäure
zur Verarbeitung von Essigsäure (z.B. Reaktoren)
crude oildiverse Anlagenteile

Range of products

Product typeProduct
Plates / Sheetsplates/sheets
plate/sheet cuts
Fittingsseamless elbows
seamless reductions
seamless T-pieces
Pipes / Tubesseamless pipes/tubes
Bar steelround bar steel

Liability exclusion

All aforementioned specifications serve as a general orientation and have to be reviewed depending on the conditions of use.
(c) 2012 M. Woite GmbH, Postbox, D-40671 Erkrath | Phone +49 (211) 24 40 91 - Fax +49 (211) 24 92 28 | www.m-woite.com - woite@woite-edelstahl.com