Complex-alloyed structural stainless steel 20H27N6M3AGV (EK38)

Used for the manufacture of welding wire for welding high alloy steels

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Materials for welding and soldering	Steel welding wire

Chemical composition

Standard	Fe, %	Si, %	Ca, %	Mn, %	Cr, %	Ni, %	Ce, %	P, %	C, %	S, %	Y, %	Mo, %	N, %	W, %
Standard	Fe, %	Si, %	Ca, %	Mn, %	Cr, %	Ni, %	Ce, %	P, %	C, %	S, %	Y, %	Mo, %	N, %	W, %
TU 14-1-3376-82	58.155–65	< 0.5	< 0.1	1–2	26–28	5–7	< 0.1	< 0.025	0.15–0.25	< 0.02	< 0.1	2.5–3	0.15–0.25	0.2–0.5

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Physical characteristics

Temperature, °C	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\varkappa$ , $\frac{W}{m\cdot K}$	$\rho$ , $\frac{kg}{m^3}$	$R\cdot 10^{-6}$ , $\Omega\cdot m$
Temperature, °C	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\varkappa$ , $\frac{W}{m\cdot K}$	$\rho$ , $\frac{kg}{m^3}$	$R\cdot 10^{-6}$ , $\Omega\cdot m$
20	15.1	14	7790	946

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	d5, %	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	d5, %	Treatment
Wire	GOST 10543 - 98	<10	Transverse	raw, cold drawn, thin, Transverse	570	295	30

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
Wire	GOST 10543 - 98	raw, cold drawn, thin, Transverse	200–230

Technological Properties

Weldability	Flake Susceptibility	Propensity to temper brittleness
Weldability	Flake Susceptibility	Propensity to temper brittleness
no limits	not sensitive	not inclined

Heat Treatment Modes

Treatment
Treatment
Quenching from 1050-1100 degrees C in the air

Analogues

Russia
Russia
Сталь Х26Н6МЗАГ2

Standards

Standard	Description
Standard	Description
TU 14-1-3376-82

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
Ca	%	Calcium
Mn	%	Manganese
Cr	%	Chrome
Ni	%	Nickel
Ce	%	Cerium
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur
Y	%	Yttrium
Mo	%	Molybdenum
N	%	Nitrogen
W	%	Tungsten

Description of physical characteristics

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$\alpha\cdot 10^{6}$	$K^{-1}$	Coefficient of thermal (linear) expansion (range 20°C–T)
$\varkappa$	$\frac{W}{m\cdot K}$	Coefficient of thermal conductivity (the heat capacity of the material)
$\rho$	$\frac{kg}{m^3}$	The density of the material
$R\cdot 10^{-6}$	$\Omega\cdot m$	Electrical resistivity

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
d5	%	Elongation at break
$\sigma_{Y}$	$MPa$	Yield strength
$\sigma _{U}$	$MPa$	Ultimate tensile strength

Designation of types of weldability

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
no limits		Welding is performed without heating and without subsequent heat treatment
Boundedly welded		Welding is possible with heating up to 100–120 °C and subsequent heat treatment
Difficult to weld		For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing
Not applicable for welded structures