Database of Steel and Alloy (Marochnik)

  Home     Steel and Alloy     Search     Equivalent Grades     GOST Standards     Grading     Contacts  

    YOU HERE:   Steel and Alloy   ->   High-temperature or heat-resistant steel and alloy

Characteristics for grade     20KhMFBR   ( 20ХМФБР )

      Grade :     20KhMFBR   ( 20ХМФБР )
      Classification :   Relaxation-resistant steel
      Equivalent grades:     Is absent



Chemical composition in % for grade   20KhMFBR   ( 20ХМФБР )
C Si Mn Ni S P Cr Mo V Nb Cu B
0.17 - 0.26max   0.370.5 - 0.8max   0.45max   0.03max   0.031 - 1.50.8 - 1.10.7 - 1max   0.15max   0.2max   0.005


Temperature of critical points for grade   20KhMFBR   ( 20ХМФБР ).
Ac1 = 810 ,      Ac3(Acm) = 950 ,       Ar3(Arcm) = 800 ,       Ar1 = 690


Mechanical properties under Т=20oС for grade   20KhMFBR   ( 20ХМФБР )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
      1076 958 13.3 46.6150Normalizing 1100oC,Drawing 650oC, 6h,
Bar   longitudinal 900   15 55400Normalizing 1100oC,Drawing 730oC, 5h,


Physical properties for grade   20KhMFBR   ( 20ХМФБР )
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 2.17     7900    
100 2.11   41      
200 2.05   46.1      
300 1.96   48.2      
400 1.88   50.2      
500 1.8   52.8      
600 1.67   54.4      
700 1.52   56.1      
T E 10- 5 a 10 6 l r C R 10 9


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]

  20KhMFBR   ( 20ХМФБР ) - Relaxation-resistant 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

    ©   2003 - 2017         Database of Steel and Alloy (russian title is the Marochnik)
Administration of the Marochnik is not responsible for the content's use.
Previous address of this website was splav.kharkov.com
Рейтинг@Mail.ru