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GB GH1140 Details

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GH1140 Application:Classification and designation for superalloys and high temperature intermetallic materials

Category Type Grade Designations
Grades Stainless Steels GH1140 China - GB , GB/T 14992 (2005) - 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
GB/T 14998 (1994) - Heat-resisting superalloy blanks for forged rings
GB/T 15062 (2008) - Superalloy tube for general application

Chemical composition(wt.%) of GH1140 grade: GB/T 14992 (2005)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.06 0.12
Cr 20.0 23.0
Mo 2.00 2.50
Ni 35.0 40.0
W 1.40 1.80
Al 0.20 0.60
Ti 0.70 1.20
Si 0.80 0.70
P - 0.025
S - 0.015
Ce - 0.05
GH1140

Mechanical properties of grade GH1140 GB/T 14992 (2005)

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)
831 (≥) 732 (≥) 41 14 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

Physical properties of grade GH1140 GB/T 14992 (2005)

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
616 (≥) 391 (≥) 44 42 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 224
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
481 912 529

GH1140 - 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
GH1140 GB China
Classification and designation for superalloys and high temperature intermetallic materials

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