Alloy SV-08Х25Н40М7 (ЭП673)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
Св-08Х25Н40М7 |
| Designation GOST Latin |
Cb-08X25H40M7 |
| Transliteration |
Sv-08H25N40M7 |
| The chemical elements |
08Cr25Ni40Cu7 |
| Name |
The value |
| Designation GOST Cyrillic |
ЭП673 |
| Designation GOST Latin |
EP673 |
| Transliteration |
EhP673 |
| The chemical elements |
- |
Description
Alloy SV-08Х25Н40М7 used: for the production of welding wire designed for mechanized welding of dissimilar steels (high-alloy heat-resistant steels with medium to low alloy heat resistant steel) and hardened steels without subsequent heat treatment and without pre-heating in the manufacture and repair of structures operating at temperatures of 450−550 °C, high humidity and aggressive environmental influences; the manufacture of electrodes ANZHR-2.
Note
High-alloyed high-temperature Nickel-based alloy.
Standards
| Name |
Code |
Standards |
| Welding and cutting of metals. Soldering, riveting |
В05 |
TU 14-1-4968-91, TU 14-4-598-75, TU 14-1-1001-74 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Ti |
Mo |
| TU 14-1-4968-91 |
≤0.08 |
≤0.015 |
≤0.02 |
1-2 |
23.5-26.5 |
≤0.4 |
38.5-41.5 |
The rest |
- |
6.5-8 |
| TU 14-4-598-75 |
≤0.1 |
≤0.016 |
≤0.025 |
1.2-2.5 |
22.5-26 |
≤0.5 |
38-42 |
The rest |
≤0.05 |
6.3-8.8 |
Ni is the basis.
According to TU 14-1-4968-91, the chemical composition is given for the alloy Sv-08X25N40M7 (EP673).
According to TU 14-4-568-74, the chemical composition is given for the welded weld metal made by an ANZHR-2 welding electrode manufactured from the Sv-08Kh25N40M7 alloy (EP673).
Mechanical characteristics
| σB, MPa |
d5, % |
kJ/m2, кДж/м2 |
| Weld, the weld electrode brand ANZHR-2 in the initial state on the other 14-4-598-75 |
| ≥590 |
≥35 |
≥1177 |
Description mechanical marks
| Name |
Description |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| kJ/m2 |
Toughness |
Technological properties
| Name |
The value |
| Weldability |
The welding wire provides a stable arc, excellent formation of root, fill and cap weld layers, does not require preheating and subsequent heat treatment of the weld. |
| Microstructure |
The content of ferritic phase in the wire is governed only by agreement of the parties. |
| Features of production |
Wire on the other 14-1-4968-91 diameter up to 2.0 mm inclusively, supplied in cold-worked condition with a compression no more than 50% and over 2.0 mm supplied in heat treated condition. |
