03H21N21M4GB (ZI35, 00Х20Н20М4Б)

St. equipment of phosphoric phosphoric to-you, mineral fertilizers, cellulose acetate, vinyl acetate, and other aggressive media and with intensive wear — mixers, separators, extractors. 8000kg / m3. OZL-17U, OZL-26A, EA-395/9.

for welded structures and components operating in conditions of hot phosphoric acid doped with fluorine and sulfur compounds, as well as a low concentration of sulfuric acid at temperatures up to 80 degrees C, with nitric acid at temperatures up to 95 degrees C; austenitic steel

Classification

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

Chemical composition

Standard	Fe, %	Si, %	Mn, %	Cr, %	Ni, %	P, %	C, %	S, %	Mo, %
Standard	Fe, %	Si, %	Mn, %	Cr, %	Ni, %	P, %	C, %	S, %	Mo, %
GOST 5632-72	49.12–54.8	< 0.6	1.8–2.5	20–22	20–22	< 0.03	< 0.03	< 0.02	3.4–3.7

Information on suppliers

Wish to advertise here?

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{P}$ , $MPa$	$\epsilon_L$ , %	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{P}$ , $MPa$	$\epsilon_L$ , %	Treatment
Forgings	GOST 25054-81	< 600	Longitudinal		490	215
The plates	GOST 7350-77				590	295	30	Hardening of 1060-1120 ° C, cooling water
Sheet	GOST 5582-75				540	245	25	Hardening of 1080-1130 ° C, the water

Technological Properties

Weldability
Weldability
no limits

Standards

Standard	Description
Standard	Description
GOST 5632-72
GOST 5582-75
GOST 7350-77
TU 14-1-1190-75
TU 14-1-3262-81
TU 14-3-694-78
TU 14-3-696-78
TU 14-3-751-78
TU 14-1-4319-87
TU 14-1-2134-77

Description of chemical elements

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

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$\sigma _{U}$	$MPa$	Ultimate tensile strength
$\sigma_{P}$	$MPa$	Proportionality limit
$\epsilon_L$	%	Elongation at break (longitudinal)

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