Material No.: 1.0345

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

Description

EN symbol (short)P253 GH (alt St37.8/1)
UNSK 01700
Grade Grade A
Grade B
UNSK 02001
Grade Grade A
Grade B
AFNORP253 GH /NF EN 10216-2 (08/2007)(FR)
BSP253 GH /B.S EN 10216-2 (08/2007)(GB)
Density kg/dm37,85
Hardness (HB)
Compositionnon alloy
CategoryHigh-temperature steel
Structure

Chemical Composition

 CSiMnPSAlCrCuMoNNbNiTiV
1.0345Min %  0,40  0,0200    0,010   
Max %0,160,351,200,0250,015 0,300,300,080,0120,0200,300,030,02
Key to Steel 2010
K 01700
K 02001
Min %              
Max %              

Physical properties

PropertyValue
Density: kg/dm37,85
Hardness: (HB)---
Temperature T
°C/F
(°C/F)
Specific heat
J / kgK
(Btu / lb °F)
Thermal conductivity
W/mK
(Btu·in / ft2·h·°F)
Electric resistance
µΩ · cm
(Ω circ mill / ft)
Modulus of elasticity
kN/mm2
(103 ksi)
Expansion rate from 70°F bis T
10-6 / K
(10-6 / °F)
20 / 68461 (--)55 (--) 210 (--) 
300 / 572   192 (--)13,6 (--)
400 /752   185 (--)14,1 (--)
450 / 842   180 (--) 
Temp.Creep strain limitCreep strain limitCreep rupture strengthCreep rupture strengthCreep rupture strength
°C /°F10.000 h100.000 h200.000 h
°C/ °FMPa /ksiMPa/ksiMPa/ksi
400 / 752  182 / 26,3141 / 20,4128 / 18,5
450 / 842  112 /16,277 / 11,166 / 9,5
500 / 932  58 / 8,432 / 4,624 / 3,5
ksi value calculated
Temperature0,2% Yield strength
in high temperatures
°C/°FRp 0,2
MPa /ksi
100 / 212198 / 28,7
200 / 392170 / 24,6
300 / 572154 / 22,3
400 / 752112 / 16,2
ksi value calculated

Mechanical properties (20°C / 68°F)

0,2 %Yield strength (Mpa / ksi>= 235 />= 34,0<= 16 mm
tensile elastic limit N/mm2 /ksi225 / 32,6
Tensile strenght Rm ksi(Mpa/360-550 / 52,2-79,7
Elongation A5 %<= 25 /<= 23lengthwise/transverse
impact work (J)>= 40 / >= 27lengthwise/transverse

Temparature information

Application area
Operation temperature14 ºF  to 896 ºF 
Working temperature1472 ºF  to 1742 ºF 
Explanation reportcool down:air
Solution heat treatment
Working temperature2012 ºF  to 1742 ºF 
Explanation reportcool down:air
Working temperature1067 ºF  to 1076 ºF 
Explanation report1067 °F<= 2 h 1076°C <= 1 h
Working temperature1562 ºF  to 2012 ºF 

Standards / information

StandardsDesciption
DIN 100216-2(10-/2007)Seamless steel tubes for pressure purposes.Non-alloy and alloy steel tubes with specified elevated temperature properties
DIN 10217-2 (10/2007)Welded steel pipes under compression load Electro-welded pipes made from non-alloyed and alloyed steel with specified properties in high temperatures
DIN EN 10216-2(10/2007)Stanless steel tubes for pressure purposes. Non-alloy and alloy steel tubes with specified elevated temperature properties
SEW 310 (08/1992)physical properties of steel

Process information

Welding
 - Material classification acc. CEN ISO/TR 156081.1
 - Typemanual arc welding (E)
MAG
MAG cored wire
MAG solid wire
submerged arc welding

Main fields of application

Details of application
Certifications
Steam boiler constructionsteam raising unit
pressure tanks
steam pipes and presure pipes
Apparatus engineeringpressure tanks

Range of products

Product typeProduct
Plates / Sheetsplates/sheets
plate/sheet cuts
Fittingswelded elbows
welded reductions
Welded T-pieces
seamless elbows
seamless reductions
seamless T-pieces
Flanges / Collars / Flared tube endsvarious flanges (weld neck flange,blind flange etc.)
Pipes / Tubeswelded pipes/tubes
seamless 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.
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