Steel SV-07CR25NI13 (N-71)
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Sv-08 steel
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Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | Св-07Х25Н13 |
| Designation GOST Latin | Cb-07X25H13 |
| Transliteration | Sv-07H25N13 |
| The chemical elements | 07Cr25Н13 |
| Name | The value |
|---|---|
| Designation GOST Cyrillic | Н-71 |
| Designation GOST Latin | H-71 |
| Transliteration | N-71 |
| The 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 of metals. Soldering, riveting | В05 | GOST 2246-70, TU 3-1050-83, TU 14-1-3146-81 |
| Bulls. Blanks. 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 | The rest | - | - | - |
| TU 3-1050-83 | ≤0.09 | ≤0.018 | ≤0.025 | 1-2 | 23-26 | 0.5-1 | 12-14 | The 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%.
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 characteristics
| Section, mm | σB, 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 |
|---|---|
| Section | Section |
| σB | 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. |
