Material No.: AISI 309

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

Description

EN symbol (short)X15CrNiSi20-12
Material No.1.4828
UNSS 30900
Grade TP 309
AFNORZ 9 CNS 24.13
BS309 S - 24- EN 10088-1 (06/2005) (GB)
Registered work's labelThermax 4828
Density kg/dm37,9
Hardness HB 30>=223
Compositionchromium nickel steel
CategoryHeat resistant steels and alloys
Structureaustenitic
CorrosionNo translation!
Additional characteristicsforge scale temperature 1832°F

Chemical Composition

 CMnPSSiNiCrN
AISI 309Min %     12,0022,00 
Max %0,152,000,0400,0300,7515,0024,00 
ASTM SA 249 (S 30900) -(AISI 309)
1.4828Min %    1,5011,0019,00 
Max %0,202,000,0450,0152,5013,0021,000,11
(Key to steel 2010)
S 30900Min %     12,0022,00 
Max %0,152,000,0400,0300,7515,0024,00 
ASTM SA 249 (S 30900 ) - (AISI 309)

Physical properties

PropertyValue
Density: kg/dm37,9
Hardness: HB 30>=223
magnetizablenon
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 / 68500 (--)157(--) 196/(--) 
200 / 392    16,5 (--)
400 / 752    17,5 (--)
500 / 932500 /(--)21/(--)  18,0 (--)
600 / 1112    18,5 (--)
800 / 1472    19,5 (--)
1000 / 1832     
Temp.Creep strain limitCreep strain limitCreep rupture strengthCreep rupture strengthCreep rupture strength
°C/°FRp 01 (10 000h)10 000 h100.000 h
°C/°FN/mm2 /ksiN/mm2 /ksiN/mm2 ksi
100/ 212     
400 /752     
500 /932     
600 /111280 /11,6 120 /17,465 /9,4 
700 /129225 /3,6  16 / 2,3 
800 / 147210 /1,4 18 / 2,67,5 /1,0 
9004 /0,6 5 / 0,73 / 0,4 

Mechanical properties (20°C / 68°F)

0,2% Yield strength (Mpa)230
Tensile strength Rm Mpa500-750solution annealed
Elongation A5 (%)>=30%solution annealed
) 

Temparature information

Application area
Operation temperature1472 ºF  to 1832 ºF 
Explanation reportscaling resistance (air) up to 1832°F
Solution heat treatment
Working temperature1922 ºF  to 2102 ºF 
Explanation reportcooldown: air/water
Processing informations-for best processing properties
-embrittlement can be reduced again
Solution heat treatment
Working temperature2102 ºF  to 1472 ºF 
Explanation reportcooldown :air
forging
Working temperature2102 ºF  to 1472 ºF 
Explanation reportfast cooldown air/water

Standards / information

StandardsDesciption
ASTM A 276 Rods and cross-sections made of stainless and heat-resistant steel

Process information

Chip removing processCarbide formation may wear down cutting tools
Welding
 - Material classification acc. CEN ISO/TR 156088,2
 - Typewell weldable
WIG
MAG solid wire
manual arc welding (E)
Laser welding
 - Add. material1.4829
 - Hintspreheating not required

Main fields of application

Details of applicationhigher mechanical strain in high temperatures
scaling resistant in air up to approx.1832°F
due to low corrosion reistance in reducing/sulfuric gases, only process material below 1202°F
Certifications
Apparatus engineeringApparate für Hochtemperatureinsatz
industral furnace engineering
industral furnace engineeringGlühhauben
crude oil

Range of products

Product typeProduct
Processing / Constructionfrom bar steel (turning, milling)
Plates / Sheetsplates/sheets
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.)
Bumped boiler ends / caps / round blanksfrom sheets
Pipes / Tubeswelded pipes/tubes
seamless pipes/tubes
Bar steelsection steel
round bar steel
Equipmentscrews, screw nuts,shims, straight turning parts, designed components

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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