Steel 08KH13 (ЭИ496)
Designation
Name | The value |
---|---|
Designation GOST Cyrillic | 08Х13 |
Designation GOST Latin | 08X13 |
Transliteration | 08H13 |
The chemical elements | 08Cr13 |
Name | The value |
---|---|
Designation GOST Cyrillic | ЭИ496 |
Designation GOST Latin | EI496 |
Transliteration | EhI496 |
The chemical elements | - |
Description
Steel 08KH13 is used: for the production of blades for steam turbines operating at temperatures up to +580 °C, valves, bolts and pipes, as well as parts with high ductility, load (valves of hydraulic presses, household items); products exposed to slightly aggressive media (precipitation, aqueous solutions of salts of organic acids at room temperature, etc.); as a cladding layer in the manufacture of hot-rolled dual-layer corrosion-resistant sheets.
Note
Corrosion-resistant and heat-resistant ferritic class.
The recommended maximum operating temperature for limited time up to +650 °C. the Temperature of beginning of intensive scaling in air +750 °C.
The greatest corrosion resistance is achieved after heat treatment (quenching and tempering), and polishing. The brand 08X13 steel can also be used after annealing.
Standards
Name | Code | Standards |
---|---|---|
Sheets and stripes | В23 | GOST 103-2006 |
Sectional and shaped rolling | В22 | GOST 1133-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006 |
Metal forming. Forgings | В03 | GOST 25054-81, OST 26-01-135-81 |
Sheets and stripes | В33 | GOST 4405-75, GOST 5582-75, GOST 7350-77, GOST 10885-85, TU 14-1-3620-83 |
Classification, nomenclature and general norms | В30 | GOST 5632-72 |
Sectional and shaped rolling | В32 | GOST 5949-75, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, GOST 18907-73, GOST 18968-73, GOST 19442-74, TU 14-11-245-88 |
Pipes steel and connecting parts to them | В62 | GOST 9940-81, GOST 9941-81, TU 14-3-1654-89 |
Bulls. Blanks. Slabs | В31 | OST 108.020.03-82, OST 3-1686-90, TU 14-1-565-84 |
Thermal and thermochemical treatment of metals | В04 | STP 26.260.484-2004, ST ЦКБА 016-2005 |
Chemical composition
Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu | V | Ti | Mo | W |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
GOST 5632-72 | ≤0.08 | ≤0.025 | ≤0.03 | ≤0.8 | 12-14 | ≤0.8 | ≤0.6 | The rest | ≤0.3 | ≤0.2 | ≤0.2 | ≤0.3 | ≤0.2 |
Mechanical characteristics
Section, mm | sT|s0,2, MPa | σB, MPa | d5, % | y, % | kJ/m2, кДж/м2 | Brinell hardness number, MPa |
---|---|---|---|---|---|---|
The sheet section 20 mm. Quenching in water from 1000-1020 °C + Vacation at 680-700 °C (exposure 12 h), air cooling. At 20 °C NV=148-156 | ||||||
- | 275-350 | 460-510 | 25-37 | 73-80 | 235-323 | - |
Sheet. Quenching in oil from 1000-1020 °C Without thermal aging | ||||||
- | 314-353 | 500-510 | 29-31 | 73-75 | 235-284 | - |
Hot rolled sheet (of 1.5-3.9 mm) and cold rolled (0,7-3,9 mm) steel according to GOST 5582-75. Annealing or vacation at 740-780 °C | ||||||
- | - | ≥410 | ≥21 | - | - | - |
Hot rolled sheet (4,0-50,0 mm) and cold rolled (4,0-5,0 mm) steel according to GOST 7350-77. Quenching in water or air with 960-1020 °C + Vacation at 680-780 °C, air cooling | ||||||
- | ≥295 | ≥420 | ≥23 | - | - | - |
The sheet section 20 mm. Quenching in water from 1000-1020 °C + Vacation at 680-700 °C (exposure 12 h), air cooling. At 20 °C NV=148-156 | ||||||
- | 275-295 | 430 | 28-29 | 77-79 | 353 | - |
Sheet. Vacation at 680-700 °C (extract 12 hours) Heat aging at 450 °C, 5000 h | ||||||
- | ≥310 | ≥490 | ≥35 | ≥74 | ≥227 | - |
Hot rolled sheet (4,0-50,0 mm) and cold rolled (4,0-5,0 mm) steel according to GOST 7350-77. Joke mode manufacturer | ||||||
- | ≥250 | ≤650 | ≥15 | - | - | - |
The sheet section 20 mm. Quenching in water from 1000-1020 °C + Vacation at 680-700 °C (exposure 12 h), air cooling. At 20 °C NV=148-156 | ||||||
- | 245-275 | 400-420 | 27-29 | 75-78 | 333-372 | - |
Forgings. Quenching in oil from 1000-1050 °C + Vacation at 700-800 °C, cooling in oil | ||||||
1000 | ≥392 | ≥539 | ≥14 | ≥35 | ≥490 | 187-229 |
The sheet section 20 mm. Quenching in water from 1000-1020 °C + Vacation at 680-700 °C (exposure 12 h), air cooling. At 20 °C NV=148-156 | ||||||
- | 235-275 | 380-400 | 22-27 | 73-77 | 333-363 | - |
Bars and strip hot rolled and forged GOST 18968-73. Quenching in water from 1000-1050 °C to + Leave in 660-770 °C, air cooling | ||||||
≥410 | ≥580 | ≥20 | ≥60 | ≥981 | 187-217 | |
The sheet section 20 mm. Quenching in water from 1000-1020 °C + Vacation at 680-700 °C (exposure 12 h), air cooling. At 20 °C NV=148-156 | ||||||
- | 215-255 | 340-470 | 23-26 | 71-79 | 343-363 | - |
Bars hot rolled and forged according to GOST 5949-75. Quenching in oil 1000-1050 °C + Vacation at 700-800 °C, cooling in oil | ||||||
≥410 | ≥590 | ≥20 | ≥60 | ≥981 | - | |
The sheet section 20 mm. Quenching in water from 1000-1020 °C + Vacation at 680-700 °C (exposure 12 h), air cooling. At 20 °C NV=148-156 | ||||||
- | 195-245 | 310-320 | 23-30 | 72-77 | 323-343 | - |
Bars hot rolled and forged at STP 26.260.484-2004. Quenching in oil with 980-1000 °C to + Leave at 680-720 °C, cooling in oil | ||||||
≥420 | ≥600 | ≥19 | ≥55 | ≥882 | - | |
The sheet section 20 mm. Quenching in water from 1000-1020 °C + Vacation at 680-700 °C (exposure 12 h), air cooling. At 20 °C NV=148-156 | ||||||
- | 185-225 | 215-285 | 26-37 | 73-84 | 294-323 | - |
Bars hot rolled and forged at STP 26.260.484-2004. The annealing at 780-850 °C + Cooling with the furnace at a speed of 20-40 °C/h up to 650-700 °C, then air cooling | ||||||
≥420 | ≥600 | ≥20 | ≥60 | ≥980 | - | |
The sheet section 20 mm. Quenching in water from 1000-1020 °C + Vacation at 680-700 °C (exposure 12 h), air cooling. At 20 °C NV=148-156 | ||||||
- | 145-165 | 165-180 | 34-45 | 87-89 | 245-265 | - |
Seamless hot deformed tubes in the delivery condition according to GOST 9940-81 | ||||||
- | ≥372 | ≥22 | - | - | - | |
Rod cross-section 20 mm. Annealing | ||||||
- | ≥285 | ≥480 | ≥36 | ≥84 | ≥295 | - |
Contoured rods (g/K, x/K and x/t for steam turbine blades; x/a and x/t for coupling blades of steam turbines) according to GOST 19442-74. Quenching in water or oil with 1000-1050 °C to + Leave in 660-770 °C, air cooling (specified strength) | ||||||
≥411 | ≥588 | ≥20 | ≥60 | ≥981 | 187-217 | |
Rod cross-section 20 mm. Annealing | ||||||
- | ≥210 | ≥350 | ≥30 | ≥82 | - | - |
- | ≥160 | ≥290 | ≥40 | ≥85 | - | - |
- | ≥105 | ≥170 | ≥51 | ≥92 | - | - |
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 |
Physical characteristics
Temperature | Е, ГПа | G, ГПа | r, кг/м3 | l, Вт/(м · °С) | R, НОм · м | a, 10-6 1/°С | С, Дж/(кг · °С) |
---|---|---|---|---|---|---|---|
0 | 217 | 85 | 7760 | - | 506 | - | - |
20 | 217 | - | 7760 | - | 506 | - | - |
100 | 212 | 80 | 7740 | 28 | 584 | 105 | 462 |
200 | 206 | 80 | 7710 | 28 | 679 | 111 | - |
300 | 198 | 77 | - | 28 | 769 | 114 | 462 |
400 | 189 | 73 | - | 28 | 854 | 118 | - |
500 | 180 | 68 | - | 27 | 938 | 121 | - |
600 | - | 62 | - | 26 | 1021 | 123 | - |
700 | - | - | - | 26 | 1103 | 125 | - |
800 | - | - | - | 25 | - | 125 | - |
900 | - | - | - | 27 | - | - | - |
1000 | - | - | - | - | - | 128 | - |
A description of the physical symbols
Name | Description |
---|---|
Е | The normal elasticity modulus |
r | Density |
l | Coefficient of thermal conductivity |
R | UD. the resistivity |
Technological properties
Name | The value |
---|---|
Weldability | Limited weldability. Welding methods: SMAW, submerged arc ADS, ARDS and CCC. Preheating and heat treatment are applied depending on the method of welding, type and purpose of the design. |
Propensity to temper brittleness | Inclined at temperatures of 400-500 °C. |
Forging temperature | Beginning - 1220 °C, the end - 850 °C. the cross Sections up to 300 mm are cooled in stacks on the air. |
Workability by cutting | In the hardened and tempered condition when NV 149-159 and blower SB=590 MPa Kn TV.SPL.=0,7 Kn b.St.=1,4. |
Features of heat treatment | Products made of steel 08X13 subjected to hardening and tempering according to the mode: heating up to 980-1000 °C, maintained for 5 min + 1 min per 1 mm of maximum wall thickness, cooling in oil; leave at 680-720 °C, exposure - 30 min + 1 min per 1 mm of maximum wall thickness, cooling in oil. Weldment of steel 08X13 should be subjected to the annealing at 780-850 °C for 1-2 hours, cooling at a speed of 20-40 °C/h up to 650-700 °C then in air. Not allowed to leave goods at 450 - 550 °C, as this leads to the "475 ° embrittlement". |