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

Characteristics of the material 15K   ( 15K,   15 ).

Material : 15K   ( 15K,   15 )
Substitute: 20
Classification : High quality structural carbon steel


Chemical composition in % of the material 15K   ( 15K,   15 ) .
C Si Mn Ni S P Cr Cu As
0.12 - 0.20.15 - 0.30.35 - 0.65max   0.3max   0.04max   0.04max   0.3max   0.3max   0.08


Temperature of critical points of the grade 15K   ( 15K,   15 ).
Ac1 = 724 ,      Ac3(Acm) = 860 ,       Ar3(Arcm) = 830 ,       Ar1 = 676


Mechanical properties under =20o of the material 15K   ( 15K,   15 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Sheet 4 - 20   380 230 25  800 
Sheet 21 - 40   380 220 25  750 
Sheet 41 - 60   380 210 25  700 


Physical properties of the material 15K   ( 15K,   15 ) .
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     7870   200
100 2.08   57 7840 486 219
200 2.05 12 53 7810 498 292
300 2 12.8   7780 514 381
400 1.91 13.2 45 7740 533 487
500 1.8 13.6   7710 555 601
600 1.65 13.85 38 7670 584 758
700       7630 636 925
800         703 1094
900       7610 703 1135
1000       7550 695 1167
1100       7490 691 1194
1200         687 1219
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 15K   ( 15K,   15 ) .
  Weldability: without limitations.
 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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