Characteristics of the material 38KH2NM ( 38H2NM, 38Х2НМ ).
Material :
38KH2NM ( 38H2NM, 38Х2НМ )
Substitute:
34ХН1М, 40ХН2МА
Classification :
Alloy structurall steel
Chemical composition in % of the material 38KH2NM ( 38H2NM, 38Х2НМ ) .
C
Si
Mn
Ni
S
P
Cr
Mo
0.32 - 0.42
0.17 - 0.37
0.5 - 0.8
0.6 - 0.9
max 0.03
max 0.03
1.8 - 2.3
0.2 - 0.3
Mechanical properties under Т=20oС of the material 38KH2NM ( 38H2NM, 38Х2НМ ) .
Assortment
Dimension
Direct.
sв
sT
d5
y
KCU
Heat treatment
-
mm
-
MPa
MPa
%
%
kJ / m2
-
Forging
to 300
830
680
12
38
500
Guenching 850 - 870oC,Drawing 590 - 620oC,
Forging
300 - 500
740
580
12
35
450
Guenching 850 - 870oC,Drawing 590 - 620oC,
Forging
500 - 800
700
530
10
30
400
Guenching 850 - 870oC,Drawing 590 - 620oC,
Brinell hardness of the material 38KH2NM ( 38H2NM, 38Х2НМ ) (normalize) ,
HB 10 -1= 207 - 235 MPa
Brinell hardness of the material 38KH2NM ( 38H2NM, 38Х2НМ ) (quenching, tempering) ,
HB 10 -1= 237 - 321 MPa
Technological properties of the material 38KH2NM ( 38H2NM, 38Х2НМ ) .
Flakes :
predisposed
Temper brittleness:
predisposed
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]
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). Helpfull for specialists in material technology, structural engineer, mechanical engineer, metallurgy and metal trader
