Chemical composition in % of the material 18k ( 18k, 18К ) .
C
Si
Mn
Ni
S
P
Cr
Cu
As
0.13 - 0.22
0.17 - 0.37
0.55 - 0.85
max 0.3
max 0.04
max 0.04
max 0.3
max 0.3
max 0.08
Mechanical properties under Т=20oС of the material 18k ( 18k, 18К ) .
Assortment
Dimension
Direct.
sв
sT
d5
y
KCU
Heat treatment
-
mm
-
MPa
MPa
%
%
kJ / m2
-
Sheet
to 20
430-520
275
20
590
As-delivered state
Sheet
21 - 40
430-520
265
20
590
As-delivered state
Sheet
41 - 60
430-520
255
20
590
As-delivered state
Technological properties of the material 18k ( 18k, 18К ) .
Weldability:
without limitations.
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
