Home»Grades > Special Alloy > ISO 9a
ISO 9aApplication:ISO standard thermal deformation of stainless steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy ISO 9aISOISO

Chemical composition%of the ladle analysis of gradeISO 9a

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Mo(%)
0.10-0.17Max 1.00Max 1.50Max 0.040Min 0.1516.0-18.0Max 0.06
ISO standard thermal deformation of stainless steel
Mechanical properties of gradeISO 9a
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)
631(≥)659(≥)441443Solution and Aging,Annealing,Ausaging,Q+T,etc314
Physical properties of gradeISO 9a
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
473(≥)454(≥)311421Solution 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
238437584
ISO 9aRange 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
1Cr19A13ISOISO
Heat-resisting steel sheets and plates
Z6CN19-09AzISOISO
Steel tubes - Welded austenitic stainless and austenitic ferritic steel rolled tubes for pressure service - Dimensions, technical conditions for delivery
Z53CMN21-09AzISOISO
Valve steels and alloys for internal combustion engines
Z53CMNS21-09AzISOISO
Valve steels and alloys for internal combustion engines
12X17P9AHl4ISOISO
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition
55X20Γ9AH4ISOISO
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition
03X19Ar3H10ISOISO
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition
ISO 19AISOISO
Stainless steels - Chemical composition
ISO 19ANISOISO
Stainless steels - Chemical composition
ISO 9AISOISO
Stainless steels - Chemical composition

Enquiry