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Characteristics for grade     15K   ( 15К )

      Grade :     15K   ( 15К )
      Substitute:   20К
      Classification :   High quality structural carbon steel
      Equivalent grades:   Go here



Chemical composition in % for grade   15K   ( 15К )
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 for grade   15K   ( 15К ).
Ac1 = 724 ,      Ac3(Acm) = 860 ,       Ar3(Arcm) = 830 ,       Ar1 = 676


Mechanical properties under Т=20oС for grade   15K   ( 15К )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Sheet, GOST 5520-79     370-480205-22525-27 640-690 


Technological properties for grade   15K   ( 15К )
  Weldability: without limitations.
 Flakes : not predisposed
Temper brittleness: not predisposed


Physical properties for grade   15K   ( 15К )
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(m·Grade) kg/m3 J/(kg·Grade) Ohm·m
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


Equivalent steels for grade     15K   ( 15К )
Warning! Indicated both exact and nearest equivalents.
USAGermanyJapanFranceItalySwedenBulgariaHungaryPolandCzechiaAustria
-DIN,WNrJIS AFNORUNISSBDSMSZPNCSNONORM
Gr.1
K02001
ASt35
H1
H2
P265GH
SGV410
STPL380
A37AP
A37CP
A37FP
Fe360-1KG
Fe360-2KG
Fe410KW
1330
1332
16K
KL2
St41K
11368
11369
11418
St35KW


Specification :
Mechanical properties :
sв - 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/(m·Grade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kg·Grade)]
R - Electrical resistance , [Ohm·m]

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

  15K   ( 15К ) - High quality structural carbon steel: chemical composition, mechanical and physical properties, hardness
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 3000 steels and alloys

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