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ISO X7CrNi18-9Application:ISO standard austenitic stainless steel pressure seamless steel tube
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy ISO X7CrNi18-9ISOISO

Chemical composition%of the ladle analysis of gradeISO X7CrNi18-9

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)
0.04-0.07Max 1.00Max 2.00Max 0.040Max 0.03017.0-19.08.00-11.0
ISO standard austenitic stainless steel pressure seamless steel tube
Mechanical properties of gradeISO X7CrNi18-9
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)
956(≥)818(≥)144122Solution and Aging,Annealing,Ausaging,Q+T,etc111
Physical properties of gradeISO X7CrNi18-9
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
273(≥)135(≥)423441Solution and Aging,Annealing,Ausaging,Q+T,etc222
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
838975613
ISO X7CrNi18-9Range 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
X7CrNi18-9ISOISO
Stainless steels - Chemical composition
X7CrNi18-9ISOISO
Welded steel tubes for pressure purposes - Technical delivery conditions - Part 6: Longitudinally welded austenitic stainless steel tubes
X7CrNi18-9ISOISO
Stainless steels - Chemical composition

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