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12X18H9 Application:Austenitic
Category Type Steel grade Standard Country
Grades Special Alloy 12X18H9 ГОСТ Russia

Chemical composition % of the ladle analysis of grade 12X18H9

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%) W(%) Ti(%)
Max 0.12 Max 0.80 Max 2.00 Max 0.035 Max 0.02 17.0-19.0 8.00-10.0 Max 0.30 Max 0.20 Max 0.50
12X18H9
Mechanical properties of grade 12X18H9
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)
716 (≥) 322 (≥) 41 13 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 232
Physical properties of grade 12X18H9
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
683 (≥) 491 (≥) 32 24 41 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
399 211 561
12X18H9 Range of products
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
12X18H9 ГОСТ Russia
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition
12X18H9T ГОСТ Russia
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition
12X18H9CMP ГОСТ Russia
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition

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