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Chemical composition % of the ladle analysis of grade 18X12BMBΦP

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) V(%) W(%) B(%) Nb(%) Ti(%)
0.15-0.22 Max 0.50 Max 0.5 Max 0.03 Max 0.025 11.0-13.0 0.40-0.60 0.50-0.70 0.15-0.30 0.40-0.70 Max 0.003 0.20-0.40 Max 0.20
18X12BMBΦP
Mechanical properties of grade 18X12BMBΦP
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)
424 (≥) 957 (≥) 12 12 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 432
Physical properties of grade 18X12BMBΦP
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
846 (≥) 832 (≥) 23 21 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 232
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
388 129 261
18X12BMBΦP 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
18X12BMBΦP
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition

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