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GB GH2018 Details

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GH2018 Application:Classification and designation for superalloys and high temperature intermetallic materials

Category Type Grade Designations
Grades Stainless Steels GH2018 China - GB , GB/T 14992 (1994) - Classification and designation for superalloys and high temperature intermetallic materials
GB/T 14995 (2010) - Hot-rolled superalloy sheets
GB/T 14996 (2010) - Cold-Rolled heat-resisting superalloy sheets

Chemical composition(wt.%) of GH2018 grade: GB/T 14992 (1994)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.06
Cr 18.0 21.0
Mo 3.70 4.30
Ni 40.0 44.0
W 1.80 2.20
Al 0.35 0.75
Ti 1.80 2.20
Si - 0.60
Mn - 0.50
P - 0.020
S - 0.015
B - 0.015
Ce - 0.02
Zr - 0.05
GH2018

Mechanical properties of grade GH2018 GB/T 14992 (1994)

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 Condition Brinell hardness (HBW)
597 (≥) 633 (≥) 34 24 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical properties of grade GH2018 GB/T 14992 (1994)

Property Density
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
531 (≥) 785 (≥) 14 14 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 412
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
817 837 355

GH2018 - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
GH2018 GB China
Classification and designation for superalloys and high temperature intermetallic materials

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