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ISO H21Application:ISO standard heat-resisting alloy
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy ISO H21ISOISO

Chemical composition%of the ladle analysis of gradeISO H21

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)Cu(%)Co(%)Ti(%)Other(%)
Max 0.08Max 1.0Max 1.0Max 0.015Max 0.0218.0-21.0RemainingMax 0.5Max 5.00.20-0.60Fe:Max 5.0
ISO standard heat-resisting alloy
Mechanical properties of gradeISO H21
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)
224(≥)827(≥)113431Solution and Aging,Annealing,Ausaging,Q+T,etc412
Physical properties of gradeISO H21
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
513(≥)989(≥)143134Solution and Aging,Annealing,Ausaging,Q+T,etc441
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
653754875
ISO H21Range 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
GH2130ISOISO
Classification and designation for superalloys and high temperature intermetallic materials
GH2132ISOISO
Classification and designation for superalloys and high temperature intermetallic materials
GH2135ISOISO
Classification and designation for superalloys and high temperature intermetallic materials
GH2136ISOISO
Classification and designation for superalloys and high temperature intermetallic materials
03X21H21M4ΓБISOISO
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition
SUH21ISOISO
CNS standard heat resistant steel plate of the steel grade and chemical composition
ISO H21ISOISO
Nickel and nickel alloy forgings
H21ISOISO
Hot-Work Tool Steel
H21ISOISO
Hot-Work Tool Steel

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