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 σU, 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
σU 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.