Steel 18Х20Н13 (ЭИ997)

Designation

Name	The value
Designation GOST Cyrillic	18Х20Н13
Designation GOST Latin	18X20H13
Transliteration	18H20N13
By chemical elements	18Cr20Н13

Name	The value
Designation GOST Cyrillic	ЭИ997
Designation GOST Latin	EI997
Transliteration	EhI997
By chemical elements	-

Description

18Х20Н13 steel is used: for the manufacture of wire used for ropes and armor, the cable tugs operating in sea water; cables hulls of ships and marine equipment products.

Note

Low corrosion-resistant high-alloy austenitic steel.
Magnetic permeability μ ≤ 1,06 GS/E.

Standards

Name	Code	Standards
Castings, non-ferrous metals and alloys	В84	RD 9257-76
Blanks. Of the workpiece. Slabs	В31	TU 14-1-1393-75
Bars and shapes	В32	TU 14-1-863-74
Wire, steel, alloy	В73	TU 14-4-1091-80

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Mo
TU 14-1-1393-75	0.15-0.22	≤0.03	≤0.03	0.5-0.8	20-21.5	≤0.7	12.5-13.5	Rest	-
RD 9257-76	0.15-0.22	≤0.03	≤0.03	0.5-0.8	20-21.5	≤0.7	12.5-13.5	Rest	≤0.2

Fe is the basis.
According to TU 14-1-863-74, TU 14-1-1393-75, the allowed deviations from the established standards of chemical composition and the content of residual elements must comply with GOST 5632.

Mechanical properties

Section, mm	σ_U, MPa
Wire nagarebana
0.2-1	1570-1893

Description mechanical marks

Name	Description
σ_U	Limit short-term strength

Physical characteristics

Temperature	r, kg/m³	a, 10^-6 1/°C
20	7900	-
400	-	1600
800	-	1900

A description of the physical symbols

Name	Description
Е	The normal elasticity modulus
l	Coefficient of thermal conductivity

Technological properties

Name	The value
Macrostructure and pollution	The macrostructure of the wire rod according to TU 14-1-863-74 should not have shrinkage porosity, bubbles, cracks and foreign inclusions.
Magnetic properties	Magnetic permeability in the field 16000-40000 A/m (200 to 500 Oersted) in RD 9257-76 μ ≤ 1,06 GS/e, wire rod, on the other 14-1-863-74 μ ≤ 1,015 GS/E.