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GB 2Cr20Mn9Ni2Si2N Details

2Cr20Mn9Ni2Si2N Application:Heat-resisting steel bars

Category Type Grade Microstructure Designations
Grades Stainless Steels 2Cr20Mn9Ni2Si2N Austenite China - GB , GB/T 1221 (1992) - Heat-resisting steel bars

Chemical composition(wt.%) of 2Cr20Mn9Ni2Si2N grade: GB/T 1221 (1992)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.17 0.26
Si 1.80 2.70
Mn 8.50 11.00
P - 0.35
S - 0.03
Ni 2.00 3.00
Cr 18.00 21.00
N 0.20 0.30
2Cr20Mn9Ni2Si2N

Mechanical properties of grade 2Cr20Mn9Ni2Si2N GB/T 1221 (1992)

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)
529 (≥) 816 (≥) 12 34 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

Physical properties of grade 2Cr20Mn9Ni2Si2N GB/T 1221 (1992)

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
157 (≥) 292 (≥) 21 33 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 344
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
881 923 125

2Cr20Mn9Ni2Si2N - 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
2Cr20Mn9Ni2Si2N GB China
Heat-resisting steel bars

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