Steel 03Х24Н6АМ3 (ЗИ130)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
03Х24Н6АМ3 |
| Designation GOST Latin |
03X24H6AM3 |
| Transliteration |
03H24N6AM3 |
| The chemical elements |
03Cr24Н6NMo3 |
| Name |
The value |
| Designation GOST Cyrillic |
ЗИ130 |
| Designation GOST Latin |
ZI130 |
| Transliteration |
ZI130 |
| The chemical elements |
ЗИ130 |
Description
03Х24Н6АМ3 steel is used: for the manufacture of welding wire, parts for critical applications with very high corrosion resistance in some aggressive environments (sulfate, phosphate, nitrate environments as well as environments containing chlorides and hydrogen sulfide). Steel it is advisable to apply due to high tensile strength when used in conditions of corrosion-erosion wear. From this are made steel equipment for production of wet phosphoric acid, complex fertilizers, urea, caprolactam, as well as advanced equipment for environments containing hydrogen sulfide.
Note
Austenite corrosion resistant steel-ferritic class.
Nitrogen-containing low carbon steel of the third generation.
Standards
| Name |
Code |
Standards |
| Thermal and thermochemical treatment of metals |
В04 |
STP 26.260.484-2004 |
| Bulls. Blanks. Slabs |
В31 |
TU 14-1-3880-84, TU 14-1-3966-85, TU 14-1-2639-79 |
| Welding and cutting of metals. Soldering, riveting |
В05 |
TU 14-1-4372-87 |
| Sheets and stripes |
В33 |
TU 14-1-5021-91, TU 14-134-330-93 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
N |
Mo |
Ce |
Zr |
| TU 14-1-3880-84 |
≤0.03 |
≤0.02 |
≤0.035 |
1-2 |
23.5-25 |
≤0.4 |
5.8-6.8 |
The rest |
- |
0.05-0.15 |
2.5-3.5 |
≤0.1 |
- |
| TU 14-1-2639-79 |
≤0.03 |
≤0.02 |
≤0.035 |
1-2 |
23.5-25 |
≤0.4 |
5.8-6.8 |
The rest |
≤0.3 |
0.05-0.15 |
2.5-3.5 |
≤0.1 |
≤0.1 |
Fe is the basis.
According to TU 14-1-3880-84, TU 14-1-5021-91 the chemical composition is given for steel grade 03H24N6AM3 (ZI130).
According to TU 14-1-2639-79 the chemical composition is presented for steel grade 03Х24Н6АМ3 (ЗИ130), the total content of aluminum and titanium ≤0.10%. Cerium and zirconium are introduced by calculation and chemical analysis are not determined. Deviations from the established standards of chemical composition are allowed: for silicon +0.40%, for chromium ± 0.30%, for total aluminum and titanium +0.050%, for nitrogen +0.050%. The content of residual elements in accordance with GOST 5632. Cerium and zirconium are introduced by calculation and chemical analysis are not determined.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
| Bars hot rolled and forged at STP 26.260.484-2004. Quenching in water or air with 1040-1060 °C |
|
≥400 |
≥700 |
≥25 |
≥35 |
≥588 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
Technological properties
| Name |
The value |
| Pressure treatment |
The steel has good hot deformability. |
| Macrostructure and contamination |
In the macrostructure of steel on the other 14-1-2639-79 should be no traces of shrinkage, bubbles, cracking, and gross foreign metal and slag inclusions visible to the naked eye. On the surface of ingots shall not be longitudinal cracks, slag inclusions with a depth of more than 5 mm and mesh height of more than 3 mm. the Defects must be removed by cutting or Stripping. The ratio of the width to the depth of cutting must be not less than 6. The depth of the cutting or Stripping shall not exceed 10% of the sides of the ingot. |
| Microstructure |
After quenching with 1070-1120 °C in the steel is formed a two-phase austenitic-ferritic structure (due to alloying) with the ratio of austenite and ferrite in the range of 40-60 %, which provides high mechanical properties. |
| Features of heat treatment |
Steel products to eliminate the tendency to intergranular corrosion are subjected to hardening regime: heating to 1040-1060 °C, exposure during heating for quenching for products with wall thickness up to 10 mm - 30 min, over 10 mm — 20 min + 1 min per 1 mm max thickness cooling in water or air. Products austenite-ferritic steels do not require heat treatment after welding. |
| Corrosion resistance |
In solutions of sulfuric acid 03Х24Н6АМЗ steel has much higher corrosion resistance than steel 10X17H13M2T (ЭИ448) and is not inferior to the alloy 06HN28MDT (ЭИ943). Steel resistant to intergranular corrosion. |
