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ISO H18

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ISO X8NiCrAlTi32 21 ISO NiCr15Fe8
#H18

Description

ISO ISO ISO H18 ISO standard Austenite size heat resistant steel and ISO H18 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: ISO H18
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy ISO H18 ISO ISO ISO standard Austenite size heat resistant steel
ISO X6CrNi23 14
ISO H14
ISO X6CrNi25 21
ISO H15
ISO X15CrNiSi25 21
ISO H16
ISO X12NiCrSi35 16
ISO H17
ISO X6NiCrSi36 19
ISO X8NiCrAlTi32 21

Chemical composition(mass fraction)(wt.%) of the ISO H18

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Cu(%) Pb(%) Al(%) Ti(%) Other(%)
Max 0.10 Max 1.0 Max 1.5 Max 0.015 Max 0.015 19.0-23.0 30.0-34.0 Max 0.7 Max 0.005 0.15-0.60 0.15-0.60 Sn: Max 0.025

Mechanical Properties of steel grade ISO H18

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
122 (≥) 177 (≥) 32 32 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade ISO H18

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
21 - -     0.43 -  
488 576 - 32.3 314   -  
457 - 44 41.2   124 314

Heat Treatment of steel grade ISO H18

Heat treated : 1115°C - 1178°C

Technological Curves of steel grade ISO H18

Cross Reference Table (Equivalent Grade) of ISO H18

Grade Standard Country Application
10X23H18 ГОСТ Russia Austenitic
20X23H18 ГОСТ Russia Austenitic
ISO H18 ISO ISO ISO standard Austenite size heat resistant steel
SWRCH18A CNS China China Taiwan Structural steel
SWRCH18K CNS China China Taiwan Structural steel
GH188 GBT China wrought Co-base superalloy
ISO X8NiCrAlTi32 21 ISO NiCr15Fe8
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