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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.
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)
|no more||no more|
Heat -okolnostima to a temperature of 800 °C
|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|
|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|
|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 
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|
The toughness KCU of the sheet section 20 mm 
|Heat treatment||KCU, j/cm2, at temperature, °C|
|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|
|600||145−165||165−180||34−45||87-S9||245 to 265|
|Rod cross-section 20 mm. Annealing|
Mechanical properties when tested for long-term strength
|The long-term strength, MPa||Test duration, h||Test temperature, o C|
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