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Metals -> High-temperature or heat-resistant steel and alloy -> Low alloy high-temperature steel

Characteristics of the material 15KHM   ( 15HM,   15 ).

Material : 15KHM   ( 15HM,   15 )
Classification : Low alloy high-temperature steel


Chemical composition in % of the material 15KHM   ( 15HM,   15 ) .
C Si Mn Ni S P Cr Mo Cu
0.11 - 0.180.17 - 0.370.4 - 0.7max   0.3max   0.035max   0.0350.8 - 1.10.4 - 0.55max   0.3


Temperature of critical points of the grade 15KHM   ( 15HM,   15 ).
Ac1 = 740 ,      Ac3(Acm) = 875


Mechanical properties under =20o of the material 15KHM   ( 15HM,   15 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar   longitudinal 540 350 25 672700Normalizing 900 - 920oC,Drawing 630 - 650oC, air,
Bar 30   440 275 21 55118Guenching 880oC, air, Drawing 650oC, air,


    Brinell hardness of the material   15KHM   ( 15HM,   15 )   (annealing) ,       HB 10 -1= 179   MPa


Physical properties of the material 15KHM   ( 15HM,   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 2.05     7850    
100   12.2 44 7830 487  
200   13 41 7800    
300   13.3 41 7760    
400   13.7 39 7730    
450 1.72          
500   14 36 7700    
600   14.3 34 7660    
700   14.5        
800   13.4 29      
900   11.2 29      
1000   12.5        
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 15KHM   ( 15HM,   15 ) .
  Weldability: without limitations.
 Flakes : 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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