AISI 309S, X12CrNi23-13, 1.4833 steel designed for mechanically loaded parts working at high temperatures. Creep-resistant up to 700 ℃, heat-resistant up to 1000 ℃ according to PN-71 / H-86022, EN 10095.
| Standard | Steel Grade | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Chemical Composition % | |||||||||||
| C: | Mn: | Si: | P: | S: | Cr: | Ni: | Mo: | V: | W: | N: | |
| PN | H23N13 | ||||||||||
| <0.20 | <2.0 | <1.0 | <0.045 | <0.030 | 22.0 - 25.0 | 12.0 - 15.0 | <0.5 | <0.2 | <0.5 | - | |
| EN SEW 470 | X12CrNi23-13 - X 12 CrNi 23-13 - 1.4833 - X7CrNi23-14 - X 7 CrNi 23-14 | ||||||||||
| <0.15 | <2.0 | <1.0 | <0.045 | <0.015 | 22.0 - 24.0 | 12.0 - 14.0 | - | - | - | <0.11 | |
| GOST | 20Ch23N13 - 20H23N13 - 20Kh23N13 - 20Х23Н13 - ЭИ319 | ||||||||||
| <0.20 | <2.0 | <1.0 | <0.035 | <0.020 | 22.0 - 25.0 | 12.0 - 15.0 | - | - | - | - | |
| AFNOR | Z15CN24-13 - Z 15 CN 24-13 | ||||||||||
| <0.15 | <2.0 | <0.75 | <0.035 | <0.015 | 22.0 - 24.0 | 12.0 - 14.0 | - | - | - | - | |
| UNI | X16CrNi23-14 - X 16 CrNi 23-14 - AR 309 | ||||||||||
| <0.20 | <2.0 | <1.0 | <0.045 | <0.030 | 22.0 - 24.0 | 12.0 - 15.0 | - | - | - | - | |
| DIN | X12CrNi22-12 - X 12 CrNi 22-12 - 1.4829 | ||||||||||
| <0.14 | <1.9 | 0.9 - 1.9 | <0.025 | <0.015 | 20.8 - 23.2 | 10.2 - 12.8 | - | - | - | - | |
| BS | 309S24 - 309 S 24 | ||||||||||
| <0.15 | <2.0 | <1.0 | <0.045 | <0.030 | 22.0 - 25.0 | 13.0 - 16.0 | - | - | - | - | |
| ASTM | UNS S30309S - TP309S - AISI 309S | ||||||||||
| <0.08 | <2.0 | <1.0 | <0.045 | <0.030 | 22.0 - 24.0 | 12.0 - 15.0 | - | - | - | - | |
AISI 309S, 1.4833, X12CrNi23-13 - description and use
Stainles chrome-nickel heat-resistant to high temperatures steel up to the 1000 °C, in case of heavily loaded mechanical parts creep resistant to 700 °C.
H23N13 is a grade with austenitic structure. In air and oxidizing gases, the grade is resistant to temperatures up to 1000 ℃, however, in a sulfur-containing environment, the steel withstands temperatures up to 900 ℃. The steel is also resistant to carburizing, nitriding and carbonitriding atmospheres.
We should also mention the tendencies to the brittleness of steel and diminishing impact strength, which occurs when working in the range of 750 - 800 ℃. Brittleness is associated with the tendency of the formation of two-phase α + γ structures and the secretion of the sigma phase.
In many cases, the H23N13 grade is used on parts of chemical apparatus operating at elevated temperatures, hence often materials with a given chemical composition can be classified as acid-resistant steel.
Due to the high ductility of steel, machining of the above-mentioned species is significantly impeded. H23N13 materials and equivalents are used for the production of furnace parts, salt bath crucibles.
General mechanical properties of X12CrNi23-13, 1.4833 +AT
- Tensile strength, Rm: 500 - 700 MPa
- The yield point, Re: > 210 MPa
- Elongation, A: >33%
- Hardness: < 192 HB
- Specific resistance: 0.78 mkOhm*m
- Thermal capacity, 500 J/kg * K
- Linear expansion coefficient, 16.0 - 19.5 * 106 1
- Thermal conductivity: 15 W/m * K
Creep limit and creep resistance at individual temperatures:
| Properties specified in MPa | Approximate properties at temperatures | ||||||
|---|---|---|---|---|---|---|---|
| 600℃ | 700℃ | 800℃ | 900℃ | ||||
| Creep limit | R1/1000 | 100 | 40 | 18 | 8 | ||
| R1/10000 | 65 | 25 | 10 | 5 | |||
| Creep strength | Rz/1000 | 190 | 75 | 35 | 15 | ||
| Rz/10000 | 120 | 36 | 18 | 8.5 | |||
| Rz/100000 | 65 | 16 | 7.5 | 3 | |||
Heat treatment of X12CrNi23-13, 1.4833
- Annealing at 1050 - 1150 ℃ with cooling in water or air (products up to 2mm)
In the 1.4833 grade and equivalents, the company provides:
- 1.4833, X12CrNi23-13, AISI 309S heat-resistant bars
- 1.4833, X12CrNi23-13, AISI 309S seamless tubes
- Heat-resistant forgings and forged bars 1.4833, X12CrNi23-13, AISI 309S
- Heat-resistant sheets 1.4833, X12CrNi23-13, AISI 309S
- Heat-resistant flat bars 1.4833, X12CrNi23-13, AISI 309S
Other replacements and equivalents of the grade H23N13:
X12CrNi23-13, X 12 CrNi 23-13, 1.4833, X7CrNi23-14, X 7 CrNi 23-14, 20Ch23N13, 20H23N13, 20Kh23N13, 20Х23Н13, ЭИ319, Z15CN24-13, Z 15 CN 24-13, X16CrNi23-14, X 16 CrNi 23-14, AR 309, X12CrNi22-12, X 12 CrNi 22-12, 1.4829, 309S24, 309 S 24, UNS S30309S, TP309S, AISI 309S, X6CrNi23-13, 1.4950, 06Cr23Ni13, 0Cr23Ni13, 16Cr23Ni13, X15CrNi23-13, Z15CN23-13, 4833, 309 S, UNS S30309 S, 309S16, J-309S, SUS309S, STS 309 STB, STS 309 STP, 1.4950, X6CrNi23-13.