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General characteristics

Steel ferritic heat-resistant and corrosion-resistant 08KH13. Is for the details of increased plasticity, operating under impact loads (hammers, valves, hydraulic presses), as well as for products that work in slightly aggressive environments (open air, in contact with aqueous solutions of salts of organic acids at room temperature), the blades of steam turbines, valves, bolts and pipes. Form of supply: sheet, strip, circle, wire, pipe. Type of supply — rolled steel, including the fittings is produced according to the following Standards: 5949−75; 2590−88; 2591−88; 2879−88; 18968−73 and 19442−74. A thick sheet of GOST 7350−77. The sheet GOST 5582−75. Forgings and forged billets GOST 1133−71; 18968−73 and 25054−81. Strip GOST 4405−75; 103−76 and 18968−73. Rod calibrated GOST 8559−75; 8560−78 and 7417−75. Wire brushed and silver GOST 14955−77 and 18907−73. Pipe GOST 9940−81 and 9941−81. Substitute — steel brand 12X13, 12X18H9T.

Technological properties

Start forging temperature: +1220°, end +850°C. the Product up to 30 cm thick are cooled in air in stacks. Prone to brittleness at t o 400−500о S. Steel has limited weldability. Used welding RNC, ADS submerged arc, ARDS and CCC. Use the preheat and final heat treatment, depending on weld type and purpose of construction. Machinability — Kv TV. SPL =0.7 and Kv used. St= 1,4 in the hardened and tempered condition when HB 149−159 and σв = 590 MPa.

The percentage composition of (GOST 19265−73)

C Mn Si Cr S P Ti Cu Ni
no more no more
0,08 0,8 0,8 12,0−14,0 0,025 0,030 0,2 0,30 0,6

Heat -okolnostima to a temperature of 800 °C

Corrosion resistance

A kind of corrosion Environment t,°C Duration, h Points of resistance
Common Corrosion properties similar 12H13. To improve the corrosion resistance and ductility of the welded joint recommended detail to subject to heat treatment regime: heating to 960−1000 °C, air cooling, leave at 680−720 °C, or just leave at 680−720 °C
Point
Stress corrosion cracking
Intergranular When tested by the method In WU and GOST 6032−89 after quenching and provokes heating of the alloy should not show a tendency to MKK

Mechanical properties

GOST Delivery condition Cross-section, mm σ0.2 MPa σв MPa δ5,% ψ,% KCU j/cm2 Hardness HB of not more than
not less than
5949−75 Rod. Quenching from 1000−1050 °C in oil; leave at 700−800 °C, cooling. in oil 60 410 590 20 60 98 -
7350−77 Steel hot-rolled sheet or cold-rolled. Quenching with 960−1020 °C in water or in air; holidays at 680−780 °C, cooled. in air or with an oven (samples transverse) SV. 4 294 422 23 - - -
25054−81 Forging-Quenching from 1000−1050 °C in oil; leave at 700−780 °C, cooled. in oil Up to 1000 392 539 14 35 49 187−229

The temperature of the critical point, °C [112]

AC1 AC3 Ag3 AG1
730 850 820 700

Mechanical properties depending on the heat exposure

Heat treatment Thermal aging σ0.2 MPa σв MPa δ5,% ψ,% KCU j/cm2
t °C τ, h
Sheet. Hardening 1000 — 1020 °C; the release at 680 — 700 °C, 12h. Without thermal aging 314−353 500−510 29−31 73−75 2352−2842
450 5000 310 490 35 74 227

The toughness KCU of the sheet section 20 mm [82]

Heat treatment KCU, j/cm2, at temperature, °C
-20 -40 -60
Hardening from 1000−1020 °C in water; a vacation at 680−700 °C, cooled. 12 hours on air 6−11 4−7 1−5

Mechanical properties at elevated temperatures

tисп °C σ0.2 MPa σв MPa δ5,% ψ,% KCU j/cm2
The sheet section 20 mm. Hardening from 1000−1020 °C in water; a vacation at 680−700 °C, exposure 12 h, cooled. in the air. At 20 °C HB 148−156
20 275−350 460−510 25−37 73−80 235−323
100 275−295 430 28−29 77−79 353
200 245−275 400−420 27−29 75−78 333−372
300 235−275 380−400 22−27 73−77 333−363
400 215−255 340−470 23−26 71−79 343−363
450 195−245 310−320 23−30 72−77 323−343
500 185−225 215−285 26−37 73−84 294−323
600 145−165 165−180 34−45 87-S9 245 to 265
Rod cross-section 20 mm. Annealing
20 285 480 36 84 295
400 210 350 30 82 -
500 160 290 40 85 -
600 105 170 51 92 -

Mechanical properties when tested for long-term strength

The long-term strength, MPa Test duration, h Test temperature, o C
121 10000 500
62
550
31
600
45 100000 550

To buy, price

In stock, LLC «" in the presence of a wide range of products from stainless steels of various brands at the best prices. Offer advantageous conditions of supply for wholesale and retail buyers. On our website you will find all the necessary information, offers experienced managers-consultants, who are always ready to help with the selection. Product quality is guaranteed by strict observance of the norms of production at all stages. Delivery times are minimal. For wholesale orders there is a reduced discount.