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Characteristics for grade     50L   ( 50Л )



      Grade :     50L   ( 50Л )
      Substitute:   55Л
      Classification :   Non-alloy casting steel
      Equivalent grades:   Go here



Chemical composition in % for grade   50L   ( 50Л )
C Si Mn S P
0.47 - 0.550.2 - 0.520.45 - 0.9max   0.06max   0.06


Mechanical properties under Т=20oС for grade   50L   ( 50Л )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Casting, GOST 977-88 to 100   569 334 11 20245Normalizing 860 - 880oC,Drawing 600 - 630oC,
Casting, GOST 977-88     736 392 14 20294 


    Brinell hardness for     50L   ( 50Л )   ,       HB 10 -1 = 159 - 240   MPa


Technological properties for grade   50L   ( 50Л )
  Weldability: limited weldability.


Heat treatment of the material   50L   ( 50Л )
Normalizing 860 - 880 ° C, Tempering 600 - 630 ° C
Hardening 860 - 880 ° C, Tempering 600 - 630 ° C


Physical properties for grade   50L   ( 50Л )
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 2.19   48 7820   191
100 2.14 12 48   479 240
200 2.08 12.4 46   500 321
300 1.96 12.8 44   517 407
400 1.78 13.3 41   542 509
500 1.7 13.7 38   559 631
600 1.55 14.1 34   584 779
700 1.36 14.5 30   617 941
800 1.22 12.4 25   727 1139
900   13.3 26   710 1170
T E 10- 5 a 10 6 l r C R 10 9


Equivalent steels for grade     50L   ( 50Л )
Warning! Indicated both exact and nearest equivalents.
USAGermanyJapan
-DIN,WNrJIS
A732(4A)
GS-60
SCC5



Types of delivery of grade   50L   ( 50Л )
B82 - Steel Castings


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

  50L   ( 50Л ) - Non-alloy casting 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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