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ASTM A335 GRADE P9Application:Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy ASTM A335 GRADE P9ASTMUSA

Chemical composition%of the ladle analysis of gradeASTM A335 GRADE P9

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Mo(%)
Max 0.150.25-1.000.30-0.60Max 0.025Max 0.0258.00-10.000.90-1.10
ASTM A335 GRADE P9
Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
Mechanical properties of gradeASTM A335 GRADE P9
Proof strength
Rp0.2(MPa)
Tensile strength
Rm(MPa)
Impact energy
KV(J)
Elongation at fracture
A(%)
Reduction in cross section on fracture
Z(%)
As-Heat-Treated ConditionBrinell hardness(HBW)
398(≥)359(≥)122311Solution and Aging,Annealing,Ausaging,Q+T,etc331
Physical properties of gradeASTM A335 GRADE P9
PropertyDensity
kg/dm3
Temperature T
°C/F
Specific heat
J/kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
397(≥)953(≥)243144Solution and Aging,Annealing,Ausaging,Q+T,etc424
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
855629833
ASTM A335 GRADE P9Range of products
Product typeProductsDimensionProcessesDeliver Status
Plates/SheetsPlates/Sheets0.08-200mm(T)*W*LForging,hot rolling and cold rollingAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Steel BarRound Bar,Flat Bar,Square BarΦ8-1200mm*LForging,hot rolling and cold rolling,CastBlack,Rough Turning,Shot Blasting,
Coil/StripSteel Coil/Steel Strip0.03-16.0x1200mmCold-Rolled&Hot-RolledAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Pipes/TubesSeamless Pipes/Tubes,Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion,Cold Drawn,WeldedAnnealed,Solution and Aging,Q+T,ACID-WASHED
Cross Reference Table(Equivalent Grade)
GradeStandardCountryApplication
12X17P9AHl4ASTMUSA
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition
X10CrWMoVNb9ASTMUSA
Boiler tubes are used in heat exchange appliances in which the energy is transferred from one medium to the other. The pipes are manufactured from carbon and low-alloy steel grades which are resistant to loads under high pressure and temperatures. They ar

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