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Metals -> Structural steel -> High quality structural carbon steel

Characteristics of the material 22K   ( 22K,   22 ).

Material : 22K   ( 22K,   22 )
Substitute: 25
Classification : High quality structural carbon steel


Chemical composition in % of the material 22K   ( 22K,   22 ) .
C Si Mn Ni S P Cr Ti Cu
0.18 - 0.260.17 - 0.40.7 - 1max   0.3max   0.04max   0.04max   0.4max   0.05max   0.3


Temperature of critical points of the grade 22K   ( 22K,   22 ).
Ac1 = 724 ,      Ac3(Acm) = 845 ,       Ar3(Arcm) = 815 ,       Ar1 = 682


Mechanical properties under =20o of the material 22K   ( 22K,   22 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Sheet 60 - 90   440      600Normalizing 940 - 960oC,Drawing 630 - 650oC,Cooling air, 65 oC/h,
Sheet 30 - 70   510 250 22 50850 


Physical properties of the material 22K   ( 22K,   22 ) .
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 2.11   51.7 7859   173
100 2.08 11.75 51 7834 470 219
200 2.05 12.2 48.5 7803 483 292
300 2 12.8 44.4 7770   381
400 1.91 13.2 42.7 7736 525 487
500 1.8 13.5 39.3 7699 571 601
600 1.65 13.85 35.6 7659   758
700   14.6 31.9 7617   925
800   12.7 25.9 7624   1094
900   12.4 26.4 7600   1135
1000   13.4 27.7 7548   1167
1100   14.2 28.5 7496   1194
1200   14.8 29.8     1219
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 22K   ( 22K,   22 ) .
  Weldability: limited weldability.
 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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