12X13 stainless steel
modern industry conditions impose products and metal constructions special requirements. It is necessary to resist the action of aggressive fluids, gases, high temperatures, high mechanical loads. Martensitic-ferritic steel 12H13, temperature-resistant and heat-resistant corrosion-resistant. It contains 12−14% chromium, 0.12% carbon, doped silicon, manganese, nickel. Used for the production of increased ductility of parts that can withstand t ° 450−500 ° C, shock, vibration and contact with a slightly aggressive environment at normal temperature. Substitute — Steel 20X13.
The percentage of (GOST 5632−72)
forging temperature starts 1230 ° C, the end section 850. Rolled up to 100 mm is cooled in air, section 101−350 mm — in the pits. Mark 12H13 prone to temper brittleness Weldability limited. Used welding: RDS, DT submerged, Ards, CCC. Pre-heating and final heat treatment are applied depending on the welding process and the appointment structure. Machinability — Kv TV. cpl = 0.8 Kv and b. CT = 0.5 in the quenched and tempered condition with HB 235 and Rm = 730 MPa.
|Wednesday||t ° C||Test time, hours||The corrosion rate mm / year|
Note. To improve the corrosion resistance of the item to be heat treated is recommended for mode: quenching with 950−1000 ° C in oil or in air; tempering at 650 to 700 ° C or polishing details.
|Wednesday||Temperature, ° C||Depth, mm / year||Group or resistance rating|
|GOST||delivery condition||Cross-section, mm||σ0.2 MPa||Rm MPa||δ5,%||ψ,%||KCU J / cm2||Hardness HB no more|
|5949−75||Bars. Tempering 1000−1050 ° C in air or oil; tempering at 700−790 ° C, OHL. in air, in an oil in water||60||410||590||20||60||88|
|18 907−73||Polished rod processed by a predetermined strength||1−30||490−780||16|
|7350−77||Hot or cold rolled sheet. Tempering 960−1020 ° C in water or air; tempering at 680−780 ° C, OHL. air or oven (transversely)||St. 4||340||490||21|
|5582−75||Annealing or tempering at 740−780 ° C (transversely)||Up to 3.9||440||21|
|25 054−81||Forgings. Tempering 1000−1050 ° C in the oil; tempering at 700−790 ° C, OHL. on air||1000||392||539||14||35||49||187−229|
The hardness of steel after cementation
|curing||Hardness HRC surface|
|Carburizing at 950 ° C, 12 h in a solid carburizer (85 birch 61% coal, 10% ash, 50% barium carbonate); hardening from 1000 ° C in the oil; tempering at 200−250 ° C||61|
Mechanical properties depending on the tempering temperature
|tisp ° C||σ0.2 MPa||Rm MPa||δ5,%||ψ,%||Hardness HB|
Note. Tempering 960 ° C in air.
The mechanical properties at elevated temperatures
|tisp ° C||σ0.2 MPa||Rm MPa||δ5,%||ψ,%||KCU J / cm2|
The mechanical properties of bars at 20 ° C depending on the heat exposure
|curing||Heat exposure||σ0.2 MPa||Rm MPa||δ5,%||ψ,%||KCU J / cm2||Hardness HB no more|
|Tempering 1000−1050 ° C in the oil; tempering at 750 ° C||450||5000||430||630||24||71||181|
|Tempering 1000−1050 ° C in the oil; tempering at 750 ° C||500||5000||420||610||24||71||78−206|
|Tempering 1000−1050 ° C in the oil; tempering at 750 ° C||10000||390||610||22||63||83|
|Tempering 1000−1050 ° C in the oil; tempering at 750 ° C||20000||370||610||20||52|
Mechanical properties when tested for rupture strength
|tisp ° C||Creep strength, MPa||creep speed% / h||tisp ° C||Limit long-term strength, MPa||τ, h|
The temperature of the critical points, ° C
The toughness KCU bars
|Tempering 990−1050 ° C in the oil; tempering at 740−750 ° C||108−216||138||98−127|
The limit of endurance
|σ-1 MPa||τ-1, MPa||P||σ0.2 MPa|
. Long products brand 12H13, incl shaped GOSSTANDART made according to the following: 5949−75; 2590−88; 2879−88; 2591−88. Plates — 7350−77. Thin sheet — 5582−75. Tape — 4986−79. The band — GOSSTANDART 4405−75 and 103−76. Forgings and forged billets — 25 1133−71 and 054−81. Pipes — 9940−81 and 9941−81. Wire — 18 143−72. Polished rod and silverfish — 14 18 955−77 and 907−73. Calibrated bars — 7417−75; 8560−78.Kupit 8559−75 and at the best price. We can buy in bulk, any semi-finished products for large-scale productions. We also offer optimal conditions for retail customers. High level of service and efficiency of service are the face of our company.
Buy at a bargain price
The company «Electrovek-steel» offers its customers an unlimited choice of stainless steel of the highest quality at a competitive price. If you are not sure, offers experienced managers who are always connected and ready to provide advice. Having made an order with us, you will receive certified products that comply with Russian and international standards of quality in the shortest possible time. If you value your time, contact today with our nearest office in Russia or in Ukraine, or make a reservation on the Internet.