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Metals -> Tool steel -> Carbon tool steel

Characteristics of the material U12   ( U12,   12 ).

Material : U12   ( U12,   12 )
Substitute: 10, 11
Classification : Carbon tool steel


Chemical composition in % of the material U12   ( U12,   12 ) .
C Si Mn Ni S P Cr Cu
1.16 - 1.230.17 - 0.330.17 - 0.33max   0.25max   0.028max   0.03max   0.2max   0.25


Temperature of critical points of the grade U12   ( U12,   12 ).
Ac1 = 730 ,      Ac3(Acm) = 820 ,       Ar1 = 700 ,       Mn = 200


Mechanical properties under =20o of the material U12   ( U12,   12 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Steel     590-690325 28 50270Annealing
Band annealed 0.08 - 3   750   10    


    Brinell hardness of the material   U12   ( U12,   12 )   (annealing) ,       HB 10 -1= 207   MPa


Physical properties of the material U12   ( U12,   12 ) .
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(mGrade) kg/m3 J/(kgGrade) Ohmm
20 2.09     7830    
100 2.05 10.5 45 7809 469 252
200 2 11.8 43 7781 503 333
300 1.93 12.6 40 7749 519 430
400 1.85 13.4 37 7713 536 540
500 1.78 13.1 35 7675 553 665
600 1.66 14.8 32 7634 720 802
700   15.3 28 7592 611 964
800   15 24 7565 712 1152
900   16.3 25 7489 703 1196
1000   16.8     699  
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material U12   ( U12,   12 ) .
  Weldability: is not used.
 Flakes : not predisposed
Temper brittleness: not predisposed



Specification :
Mechanical properties :
s - Tensile strength , [MPa]
sT - Yield stress, [MPa]
d5 - Specific elongation at fracture , [ % ]
y - Reduction of area , [ % ]
KCU - Impact strength , [ kJ / m2]
HB - Brinell hardness , [MPa]

Physical properties :
T - Test temperature , [Grade]
E - Young modulus , [MPa]
a - Coefficient of linear expansion (range 20o - T ) , [1/Grade]
l - Termal (heat) condition coefficient , [Watt/(mGrade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kgGrade)]
R - Electrical resistance , [Ohmm]

Weldability :
without limitations - welding is done without heating and subsequent heat treeting
limited weldability - welding is possible under heating up to 100-120 grade and subsequent heat treeting
hard weldability - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing

Database of steels and alloys (Marochnik) contains information about chemical composition and properties of 1500 steels and alloys (stainless steel, alloy steel, carbone steel, structural steel, tool steel, cast iron, aluminum alloy, titanium alloy, copper alloy, nickel alloy, magnesium alloy and others).
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