Steel 03Х24Н6АМ3 (ЗИ130)

Designation

Name	The value
Designation GOST Cyrillic	03Х24Н6АМ3
Designation GOST Latin	03X24H6AM3
Transliteration	03H24N6AM3
By chemical elements	03Cr24Н6NMo3

Name	The value
Designation GOST Cyrillic	ЗИ130
Designation GOST Latin	ZI130
Transliteration	ZI130
By 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
Blanks. Of the workpiece. Slabs	В31	TU 14-1-3880-84, TU 14-1-3966-85, TU 14-1-2639-79
Welding and cutting metals. Soldering, riveting	В05	TU 14-1-4372-87
Sheets and strips	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	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	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 properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²
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
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
y	The relative narrowing
KCU	Toughness

Technological properties

Name	The value
Pressure treatment	The steel has good hot deformability.
Macrostructure and pollution	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.