Steel SV-07CR25NI13 (N-71)

Designation

Name	The value
Designation GOST Cyrillic	Св-07Х25Н13
Designation GOST Latin	Cb-07X25H13
Transliteration	Sv-07H25N13
By chemical elements	07Cr25Н13

Name	The value
Designation GOST Cyrillic	Н-71
Designation GOST Latin	H-71
Transliteration	N-71
By chemical elements	Н-71

Description

Steel SV-07CR25NI13 used: for the production of the welding strip 0.5 to 1.0 mm wire, used for welding parts and welding of steel structures in power engineering industry; for the manufacture of electrodes.

Note

Steel high alloy high-temperature.

Standards

Name	Code	Standards
Welding and cutting metals. Soldering, riveting	В05	GOST 2246-70, TU 3-1050-83, TU 14-1-3146-81
Blanks. Of the workpiece. Slabs	В31	TU 14-1-1214-75

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	Ti	Mo
TU 14-1-3146-81	≤0.09	≤0.018	≤0.025	1-2	23-26	0.5-1	12-14	Rest	-	-	-
TU 3-1050-83	≤0.09	≤0.018	≤0.025	1-2	23-26	0.5-1	12-14	Rest	≤0.25	≤0.2	≤0.25

Fe is the basis.
According to TU 14-1-3146-81 the chemical composition of steel S-07X25N13 is given.
According to GOST 2246-70 the chemical composition of steel S-07X25N13 is given.
According to TU 3-1050-83 the chemical composition of steel S-07X25N13 is given. In the wire intended for welding or surfacing the chromium content should be not less than 23.50%. Permissible deviations in chemical composition: carbon ± 0.010%; on manganese with the content of manganese from 0.60 to 1.20% ± 0.020%, with manganese content exceeding 1.2% ± 0.050%; for silicon with a content of silicon from 0.35 to 0.85% ± 0.020%, with a silicon content exceeding 0.85% ± 0.050%; by nickel ± 0,15%; on chrome ± 0,20%. The residual content of molybdenum and copper should not exceed 0.25% each, and titanium not more than 0.20%. At the request of the consumer, the residual copper content in the wire should not be more than 0.20%.

Mechanical properties

Section, mm	σ_U, MPa
Tape in polonikeman condition
0.5-1	1079
Wire in the delivery state on the other 3-1050-83
1.6; 2.0	686-980
2	637-932
0.8-1.5	883-1324
1.6	883-1275
2	785-1180
2	686-1030

Description mechanical marks

Name	Description
σ_U	Limit short-term strength

Technological properties

Name	The value
Microstructure	On the other 14-1-3146-81 the content of the ferritic phase must be in the range of 3-8% optional. On the other 3-1050-83 the content of ferritic phase in the wire should be in the range of 2-8%, which allowed increasing the content of chromium up to 2.0%, and Nickel up to 1.0% compared with the standards SPECIFICATIONS.