Database of Steel and Alloy (Marochnik)

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Metals -> Structural steel -> Alloy structurall steel

Characteristics of the material 38KHMÀ   ( 38HMÀ,   38ÕÌÀ ).

Material : 38KHMÀ   ( 38HMÀ,   38ÕÌÀ )
Classification : Alloy structurall steel


Chemical composition in % of the material 38KHMÀ   ( 38HMÀ,   38ÕÌÀ ) .
C Si Mn Ni S P Cr Mo Cu
0.35 - 0.420.17 - 0.370.35 - 0.65max   0.3max   0.025max   0.0250.9 - 1.30.2 - 0.3max   0.3


Temperature of critical points of the grade 38KHMÀ   ( 38HMÀ,   38ÕÌÀ ).
Ac1 = 758 ,      Ac3(Acm) = 805 ,       Ar3(Arcm) = 725 ,       Ar1 = 650


Mechanical properties under Ò=20oÑ of the material 38KHMÀ   ( 38HMÀ,   38ÕÌÀ ) .
Assortment Dimension Direct. sâ sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar Æ 25   980 885 11 45690Guenching 850oC, oil, Drawing 600oC, air,


Physical properties of the material 38KHMÀ   ( 38HMÀ,   38ÕÌÀ ) .
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   33     257
100 2.01 12.4 35   496 280
200 1.94 13.1 38   508 310
300 1.84 13.7 39   525 380
400 1.74 14.2 36   538 470
500 1.69 14.5 34   567 580
600 1.66 14.6 33   600 720
700 1.41 14.7 31   672 870
800 1.29 11.2 27   697 1060
T E 10- 5 a 10 6 l r C R 10 9



Specification :
Mechanical properties :
sâ - 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]

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).
Helpfull for specialists in material technology, structural engineer, mechanical engineer, metallurgy and metal trader

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