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GOST X12M Details

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

Category Type Grade Designations
Grades Tool Die Steels X12M Russia - GOST ,

Chemical composition(wt.%) of X12M grade:

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
Cold work die steel, steel hardenability, quenching tempering hardness, wear resistance, strength are higher than the Cr12.Shape is complex, the working conditions under the heavy cold die and tools, such as punching die, blanking die, piping mold, steel sheet deep drawing tools, circular saw, standard and gauge, thread rolling dies, etc.


Heat treatment specification
Heat treatment specification: 1. The quenching, 950 ~ 1000 ℃ oil cooling;2. The quenching 1020 ℃, 200 ℃ tempering 2 h.
Microstructure: fine granular pearlite + carbide.
Delivery status: steel in annealing state delivery.
Cold extrusion touch into billet softening specification
Make ⽤ ⽣ iron protection heating, the temperature is 760 ~ 780 ° C, time 10 h, furnace cooling, l96HBW hardness, can be smooth realization of cold extrusion forming
Ordinary isothermal spheroidizing annealing specification
850 ~ 870 ℃ by 3 ~ 4 h, along with the furnace cooled to 740 ~ 760 ℃ isothermal x 4 ~ 5 h, from empty cold hardness 241 HBW, or less eutectic carbide grade 3 or less
Best isothermal temperature 740 ~ 76 ° C, o time 4 ~ 5 h or more
The spheroidizing annealing specification
° C (860 + 1 u) x 2 ~ 4 h, at 30 ° C/h speed furnace cold, (740 +) 10 ° C x4-6 h, with the slow cooling furnace to 500 ~ 600 ° C, from air cooling. Hardness of 207 ~ 255 HBW.
Cryogenic treatment
Crl2MoV steel after cryogenic treatment, cryogenic treatment can make the quenching martensite highly dispersion of ultrafine carbides precipitate, then after 200 ℃ low temperature tempering, these ultrafine carbides can be transformed into carbide.Without the cryogenic treatment of martensite, after low temperature tempering, only has a small number of carbide precipitation in some local areas.Crl2MoV by low temperature chemical heat treatment method, in keeping the Crl2MoV steel on the basis of the high hardness and high wear resistance of ion nitriding, nitrogen gas carbon altogether permeability, salt bath sulphur cyanogen altogether permeability kind of commonly used low temperature chemical heat treatment of carbonitriding layer adhesion force.Three kinds of low temperature chemical heat treatment of infiltration layer have a significant impact resistant adhesive effect, especially in salt bath sulphur cyanogen permeability best.Crl2MoV steel stainless steel household utensils after tensile modulus were treated with nitrogen gas carbon altogether permeability, the service life of more than 30000 pieces, the conventional quenching and tempering treatment of the similar die life increased by more than 10 times.

Mechanical properties of grade X12M

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)
797 (≥) 339 (≥) 43 41 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 231

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
Modulus of elasticity
kN/mm2
Expansion rate
364 (≥) 467 (≥) 43 41 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 422
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
821 893 998

X12M - 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
D3 ASTM USA
Cold-Work Tool Steel
X165CrMoV12 DIN Germany
High alloyed CrMoV steel for cutting tool and cold work tool steel
1.2601 DIN Germany
High alloyed CrMoV steel for cutting tool and cold work tool steel
SKD-11 JIS Japan
Mainly used for cold working mold: gauge, die for thread rolling, cutting tool for metal, forming roll, die for press.
SS 2310 SS Sweden
Cold work die steel, steel hardenability, quenching tempering hardness, wear resistance, strength are higher than the Cr12.Shape is complex,
X12M GOST Russia
Cold work die steel, steel hardenability, quenching tempering hardness, wear resistance, strength are higher than the Cr12.Shape is complex,
X160CrMoV12 / Z160CDV12 AFNOR France
Cold working alloy tool steels

Relevant products

X12M Steel Stock

Steel grade Dimension Shape Unit Quantity Delivery state Query
Cr12MoV 12-160(T)*310-610(W)*L Plate or Sheet Tons 12.38 Hot-Rolled+Annealed+black Enquiry
1.2601 12-160(T)*310-610(W)*L Plate or Sheet Tons 11.22 Hot-Rolled+Annealed+black Enquiry
SkD-11 Round Bar Stock Φ30-Φ350 Round Bar Kgs 3102 Hot-Rolled+Annealed+black Enquiry
17-4PH Coil Stock 0.08*200mm Coil or Strip Kgs 1623 Cold-Rolled+Annealed Enquiry
D2 Round bar Φ25-Φ380mm Round Bar Kgs 45325 Hot-Rolled+Annealed+black Enquiry
Cr8 flat bar 12*355*L Flat or Square bar Kgs 3965 Forged+Annealed+black Enquiry
17-4PH Round Bar Φ5-300mm*L Round Bar Kgs 46958 Hot-Rolled+Annealed+black Enquiry
17-4PH plate 8-45*1200*3000mm Plate or Sheet Tons 4.9 Hot-Rolled+Annealed+black Enquiry
IncoloyA-286 / GH 2132 Stock Φ8-65mm*L Round Bar Kgs 489 Hot-Rolled+Annealed+black Enquiry
Incoloy800 round bar Φ115*1400 Round Bar Kgs 169 Hot-Rolled+Annealed+black Enquiry
17-7PH / 631 Coil & Strip, Sheet Stock 0.3-3.0*10-180mm Coil or Strip Kgs 1236.22 Cold-Rolled+Annealed Enquiry
X22CrMoV12-1 / 1.4923 Φ17mm Round Bar Kgs 300 Hot-Rolled+Annealed+black Enquiry
1.2083 Forged Plate T:105-185mm*W:510*L Plate or Sheet Tons 26 Forged+QT Enquiry
X22CrMoV12-1 / 1.4923 Φ30mm Round Bar Kgs 300 Hot-Rolled+Annealed+black Enquiry
1.4882 strip/sheet/plate stock 3.5x200x1000-2000mm Coil or Strip Kgs 200 Cold-Rolled+Annealed Enquiry
A387 F5 & Grade 5 sheet Coil strip 0.5mmx200mmxC Coil or Strip Tons 3 Cold-Rolled+Annealed Enquiry
A387 F5 & Grade 5 Hot Coil stock Select Tons 3 Hot-Rolled+Annealed+black Enquiry

Enquiry