06HN28MDT (EI943, 0Х23Н28М3Д3Т, EP591)

St. chemical equipment, reactors, heat exchangers, pipelines, tanks, operating at t up to 80 degrees in sulfuric to-those, except for 55%, extraction phosphoric, acetic and other environments of increased aggressiveness in pr-ve complex mineral fertilizers. OZL-17U, OZL-37−2.

welded structures operating at temperatures up to 80 ° C in sulfuric acid of different concentrations, except 55% acetic acid and phosphoric acid.

Classification

Country	Section	Category
CIS, Russia, Ukraine	Corrosion-resistant alloys and steels	Corrosion-resistant alloys

Chemical composition

Standard	Fe, %	Si, %	Mn, %	Cr, %	Ti, %	Cu, %	Ni, %	P, %	C, %	S, %	Mo, %
GOST 5632-72	36.885–46.5	< 0.8	< 0.8	22–25	0.5–0.9	2.5–3.5	26–29	< 0.035	< 0.06	< 0.02	2.5–3

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Physical characteristics

Temperature, °C	$$E\cdot 10^{9}$$, $$MPa$$	$$\alpha\cdot 10^{6}$$, $$K^{-1}$$	$$\varkappa$$, $$\frac{W}{m\cdot K}$$	$$\rho$$, $$\frac{kg}{m^3}$$	$$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20			13	7960	0.75
100	191	10.9	13
200	186	12.9	15
300	179	13.6	17
400	171	14.4
500	161	14.9	22
600	156	15.3	24
700	151	16.8	25
800	145	16.3	26
900		16.8

Mechanical properties at 20 °C

Rolling	Standard	$$\sigma _{U}$$, $$MPa$$	$$\sigma_{P}$$, $$MPa$$	$$\epsilon_L$$, %	$$\psi$$, %	$$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$	Treatment
Pipes are coldly deformed.	GOST 9941-81	490		30
Forgings	GOST 25054-81	510	216	30–36	30–40
Pipe billet		540	245	35	50	980	Hardening of 1050-1080 ° C, the water
The plates	GOST 7350-77	540	215	35			Hardening of 950-1080 ° C, cooling water
Sheet	GOST 5582-75	540		35			Hardening of 1050-1080 ° C, cooling water
Sheet	GOST 4986-79	550		13–25			Hardening of 930-1050 ° C, air cooling

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Forgings	GOST 25054-81		200

Technological Properties

Weldability
no limits

Analogues

Germany	USA
1.4563	N08028
1.4563 (X1NiCrMoCu31-27-4)

Standards

Standard	Description
GOST 5632-72
GOST 5949-75
GOST 7350-77
GOST 4986-79
GOST 5582-75
GOST 9940-81
GOST 9941-81
TU 14-3-822-79
TU 14-3-763-78

Description of chemical elements

Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
Mn	%	Manganese
Cr	%	Chrome
Ti	%	Titan
Cu	%	Copper
Ni	%	Nickel
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur
Mo	%	Molybdenum

Description of physical characteristics

Parameter	Units of measurement	Description
$$E\cdot 10^{9}$$	$$MPa$$	Elastic modulus
$$\alpha\cdot 10^{6}$$	$$K^{-1}$$	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
$$\sigma _{U}$$	$$MPa$$	Ultimate tensile strength
$$\sigma_{P}$$	$$MPa$$	Proportionality limit
$$\epsilon_L$$	%	Elongation at break (longitudinal)
$$\psi$$	%	Reduction in cross section on fracture
$$KCU\cdot 10^{3}$$	$$\frac{J}{m^2}$$	Impact toughness

Designation of types of weldability

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