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Steel 10Х14Г14Н4Т

10Х14Г14Н4Т steel

Steel 10X14H14N4T: Handbook of steels and alloys. Below is systematized information on the purpose, chemical composition, types of supply, substitutes, critical point temperatures, physical, mechanical, technological and foundry properties for the grade — Steel 10Cr14G14N4T.

General information about steel 10Х14Г14Н4Т

Substitute for the grade
of steel grades: 20Х13Н4Г9, 12Х18Н9Т, 12Х18Н10Т, 08Х18Н10Т.
Delivery type
Bar stock, including shaped: GOST 5949−75, GOST 2590−71, GOST 2591−71, GOST 2879−69. Calibrated rod GOST 7417−75, GOST 8559−75, GOST 8560−78. Grinded rod and silver GOST 14955−77. Sheet thick GOST 7350−77. Sheet GOST 5582−75 thin. GOST 4405−75, GOST 103−76. Forgings and forged blanks GOST 1133−71.
Application
For the manufacture of various welded equipment operating in the mildly aggressive chemical industries, cryogenic equipment up to -253 ° C, as well as for use as heat-resistant and heat-resistant material up to 700 ° C. Steel is corrosion-resistant of outtense class.

Chemical composition of steel 10Х14Г14Н4Т

Chemical element %
Silicon (Si), not more 0.8
Manganese (Mn) 13.0−15.0
Copper (Cu), not more than 0.30
Nickel (Ni) 2.8−4.5
Sulfur (S), not more than 0.020
Titanium (Ti) 0.4−0.6
Carbon ©, not more than 0.10
Phosphorus (P), not more 0.035
Chrome (Cr) 13.0−15.0

Mechanical properties of steel 10Х14Г14Н4Т

Heat treatment, delivery condition Section, mm σ0, 2, MPa σB, MPa δ5, % ψ, %
Rods. Hardened at 1000−1090°C, oil, water or air. 60 245 640 35 50
Hot- and cold-rolled sheets. Hardened at 1050−1080°C, water or air (transverse samples) >4 245 588 40  
Hot- and cold-rolled sheets. Hardened 1050−1080°C, water or air (transverse samples) <3,9 290 690 35  

Mechanical properties at elevated temperatures

t test,°C σ0, 2, MPa σB, MPa δ5, % ψ, % KCU, J/m2
12 mm thick sheet. 1050 °C hardening, water.
20 270 730 52 72 250
400 130 460 53 67  
500 110 390 38 63  
600 90 270 39 62  
700 80 220 48 63  
Sheet thickness 16 mm. Hardened at 1050 °C, water.
800 100 160 44 62 330
900 90 100 66 67 330
1000   50 64 85 270
1100   20 49 74 190
1200   15 68 60 180

Mechanical properties depending on the degree of cold plastic deformation

Heat treatment, delivery condition σ0, 2, MPa σB, MPa δ5, % ψ, % KCU, J/m2
3 mm thick sheet. Hardened at 1050 °C with water. Deformation by compression
Initial state 270 730 52    
Degree of deformation — 20% 900 1050 15    
Degree of deformation — 40% 1170 1200 10    
Degree of deformation — 60%   1500 2    
Plate 12X30 X 220 mm of sheet metal. Tensile deformation.
Initial state 230 820 59 64 294
Degree of deformation — 0.5% 250 810 64 65 283
Degree of deformation — 10% 400 850 57 65 225
Degree of deformation — 20% 630 910 46 64 169

Mechanical properties in the long term strength test

Creep strength, MPa Creep rate, %/h t test,°C Ultimate long-term strength, MPa Test duration, h t test, h
160 1/1000 600 265−274 100 600
50 1/1000 700 176−196 1000 600
100 1/10000 600 147−167 100 700
28 1/10000 700 88−108 1000 700

Technological properties of steel 10Х14Г14Н4Т

Forging temperature
Beginning 1150, end 850.
Weldability
The steel is satisfactorily welded by all kinds of welding. For manual arc welding are used electrodes type EA-1, EA-1A, EA-1BA. Automatic welding is carried out under flux AN-26.
Tendency to tempering ability
is not inclined
Floc-sensitivity
is not sensitive

Impact toughness of steel 10Х14Г14Н4Т

Impact toughness, KCU, J/cm2

Delivery condition, heat treatment -60 -100
1050 C hardening, water. 343 314

Heat resistance of steel 10Х14Г14Н4Т

Medium Temperature,°C Depth, mm/year Resistance group or grade
Air 700 0,1 5
Air 800 0,35 6

Physical properties of steel 10Х14Г14Н4Т

Test temperature,°C 20 100 200 300 400 500 600 700 800 900
Modulus of normal elasticity, E, GPa 194 189 181 170 164 159 161      
Steel density, pn, kg/m3 7800                  
Thermal conductivity coefficient W/(m — °C) 15 17 18 21 24 30 36 43 51  
Test temperature,°C 20−100 20−200 20−300 20−400 20−500 20−600 20−700 20−800 20−900 20−1000
Coefficient of linear expansion (a, 10−6 1/°C) 16.0 16.7 17.5 18.4 19.0 19.5 20.1 20.6 21.0