Steel 06Х16Н15М3К

Designation

Name	The value
Name	The value
Designation GOST Cyrillic	06Х16Н15М3К
Designation GOST Latin	06X16H15M3K
Transliteration	06H16N15M3K
By chemical elements	06Cr16Н15Mo3

Description

06Х16Н15М3К steel is used: for the production of bars with special surface finish (silverfish), intended for the manufacture of parts of power equipment continuously operating at temperatures up to +450 °C.

Note

Steel heat-resistant austenitic class.
The recommended maximum operating temperature for a very long time +450 °C.
The temperature of beginning of intensive scaling in air +900 °C.

Standards

Name	Code	Standards
Name	Code	Standards
Bars and shapes	В32	TU 14-1-977-74

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Mo	Nb
Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Mo	Nb
TU 14-1-977-74	0.04-0.08	≤0.015	≤0.02	≤0.8	15-17	≤0.4	14-16	Rest	2.7-3.3	0.4-0.9

Fe is the basis.
According to TU 14-1-977-74, the chemical composition is presented for steel grade 06H16N15M3K-III. The ratio of niobium to carbon Nb / C should be within the range of 9-13, a reduction in the Nb / C ratio up to 8 is allowed. A deviation of the content of individual elements is possible provided that the remaining requirements of the technical conditions are met: for niobium - plus 0.20%, for carbon - plus 0.010% / minus 0.005%, for silicon - plus 0.20%.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %
Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %
The silverfish in the state of delivery on the other 14-1-977-74. Extract at 920-970 °C, for 40-60 minutes, cooling in water or air
10-20	≥215	≥540	≥30

Description mechanical marks

Name	Description
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

Technological properties

Name	The value
Name	The value
Macrostructure and pollution	In the macrostructure of steel on the other 14-1-977-74 controlled 2 treated templeto selected from two workpieces with a diameter of 80-110 mm of each heat, there should be no cracks, gas bubbles, traces of shrinkage, inclusions, niobium crust, delamination, visible to the naked eye. Allowed: - at the Central porosity ≤ 1 point; - at the point of heterogeneity of ≤ 1 point; - phase separation to the square of ≤ 1 point. Layer-by-layer crystallization in the macrostructure of rejection symptom is not. Contamination of metal non-metallic inclusions is tested on 6 samples cut from 2 samples taken from 2 pieces with a diameter of 80-110 mm. In the metal allowed the presence of non-metallic inclusions by the maximum score: - sulphides ≤ 1.0 points, oxides of point ≤ 2.0 points; - oxides of stroke ≤ 2.0 points, silicates, non-deformed ≤ 1.0 points; - nitrides and carbonitrides point ≤ 3.5 points; - nitrides and carbonitrides of niobium stroke ≤ 3.5 points.
Particularities of production of goods	On the other 14-1-977-74 Serebryanka is supplied in heat-treated according to the mode: Exposure at 920-970 °C, for 40-60 minutes, cooling in water or air. Before the heat treatment, the metal must be subjected to drawing with a reduction degree of not less than 20 %. The grain size in points should not exceed 7.
Corrosion resistance	Steel on the other 14-1-977-74 must withstand the test of the ICC method AM (24 hours) according to GOST 6032 pre austenization samples at the temperature of 1050-1100 °C with cooling in air or in water and precipitating by heating at a temperature of 650 °C for 2 hours. The test is performed on 2 specimens cut from 2 samples taken from 2 pieces with a diameter of 80-110 mm of each heat..