GOST X12M

Grades | Tool Die Steels | X12M

GOST X12M

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X12M Application:Cold work die steel, steel hardenability, quenching tempering hardness, wear resistance, strength are higher than the Cr12.Shape is complex,

Chemical composition(mass fraction)(wt.%) of the X12M
Elements Min.（≥） Max.（≤） Similar Remarks
C 1.45 1.65
Si 0.10 0.40
Mn 0.15 0.45
P - 0.03
S - 0.03
Cr 11.0 12.5
Mo 0.40 0.60
Ni - 0.35
V 0.15 0.30
W - 0.20
Cu - 0.30
Ti - 0.03

Mechanical properties of grade X12M

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition HBW
179 (≥) 147 (≥) 23 44 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 434

Physical properties of grade X12M

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm
748 (≥) 629 (≥) 24 21 14 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2		 - - -
812 456 879 - - -

X12M 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