1.4541, X6CrNiTi18-10, AISI 321 - stainless steel
1.4541, X6CrNiTi18-10, AISI 321 - austenitic stainless steel with titanium addition in compliance with EN 10088-1.
1.4878, X8CrNiTi18-10, AISI 321H - heat-resistant steel in compliance with EN 10095.
| Standard | Steel Grade | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chemical Composition % | |||||||||
| C: | Mn: | Si: | P: | S: | Cr: | Ni: | Ti: | N: | |
| EN | 1.4541 - X6CrNiTi18-10 | ||||||||
| <0.08 | <2.0 | <1.0 | <0.045 | <0.03 | 17.0 - 19.0 | 9.0 - 12.0 | <0.7 | - | |
| ASTM | AISI 321 - UNS S32100 | ||||||||
| <0.08 | <2.0 | <0.75 | <0.045 | <0.03 | 17.0 - 19.0 | 9.0 - 12.0 | <0.7 | <0.1 | |
| EN/DIN | 1.4878 - X8CrNiTi18-10 - X12CrNiTi18-9 | ||||||||
| <0.10 | <2.0 | <1.0 | <0.045 | <0.015 | 17.0 - 19.0 | 9.0 - 12.0 | <0.8 | - | |
| ASTM | AISI 321H - UNS S32109 | ||||||||
| 0.04 - 0.10 | <2.0 | <0.75 | <0.045 | <0.030 | 17.0 - 19.0 | 9.0 - 12.0 | 0.16 - 0.70 | - | |
| LW | 1.4544 | ||||||||
| <0.08 | <2.0 | <1.0 | <0.035 | <0.025 | 17.0 - 19.0 | 9.0 - 11.5 | <0.6 | - | |
| NF | Z6CNT18-10 | ||||||||
| <0.06 | <2.0 | <0.75 | <0.040 | <0.015 | 17.0 - 19.0 | 9.0 - 12.0 | <0.7 | <0.05 | |
| PN | 1H18N9T | ||||||||
| <0.10 | <2.0 | <0.80 | <0.045 | <0.030 | 17.0 - 19.0 | 9.0 - 10.0 | <0.8 | - | |
| PN | 0H18N10T | ||||||||
| <0.08 | <2.0 | <0.80 | <0.045 | <0.030 | 17.0 - 19.0 | 9.0 - 11.0 | <0.7 | - | |
| PN | 1H18N10T | ||||||||
| <0.10 | <2.0 | <0.8 | <0.045 | <0.030 | 17.0 - 18.5 | 10.0 - 11.0 | <0.8 | - | |
| PN | 1H18N12T | ||||||||
| <0.10 | <2.0 | <0.8 | <0.045 | <0.030 | 17.0 - 19.0 | 11.0 - 13.0 | <0.8 | - | |
| GOST | 06Ch18N10T - 06Х18Н10Т | ||||||||
| 0.03 - 0.06 | 1.0 - 2.0 | <0.8 | <0.035 | <0.020 | 17.0 - 19.0 | 10.0 - 11.0 | <0.7 | <0.05 | |
| GOST | 08Ch18N10T - 08Х18Н10Т | ||||||||
| <0.08 | <2.0 | <0.8 | <0.035 | <0.020 | 17.0 - 19.0 | 9.0 - 11.0 | <0.7 | - | |
| GOST | 10Ch18N10T - 10Х18Н10Т | ||||||||
| <0.10 | 1.0 - 2.0 | <0.8 | <0.035 | <0.020 | 17.0 - 19.0 | 9.5 - 11.0 | <0.6 | - | |
| GOST | 12Ch18N10T - 12Х18Н10Т | ||||||||
| <0.12 | <2.0 | <0.8 | <0.035 | <0.020 | 17.0 - 19.0 | 9.0 - 11.0 | <0.8 | - | |
1.4541, X6CrNiTi18-10, AISI 321 - specifications and applications
Chrome-nickel stainless steel with addition of titanium with increased hardness, elasticity, maintaining non-magnetic properties, resistance to intergranular corrosion and increased temperatures. It is characterized by significant resistance to nitric acid, nitric acid salts in high concentrations and temperatures, cold solutions of salts, toluene, sulphuric acid, phosphoric acid, acetic acid, formic acid and a large portion of organic acids. It is worth mentioning about the very good impact strength maintained at low temperatures, sufficient ductility of the materials, as well as increased resistance to pitting and crevice corrosion due to the content of titanium in the chemical composition. It is used in the chemical, food, cryogenic, nitric, aerospace, paper and fuel industries for pressure vessels, liquid installations, tanks, pipelines, fittings, components of equipment and machinery in food processing, silos and tanks for the production of chemical compounds, radiators, heat exchangers, corrosion-resistant springs, parts requiring increased strength in structures, and autoclaves. The steel is distinguished by its good weldability.
1.4878, X8CrNiTi18-10, AISI 321H - heat-resistant steel
Replacement of 1.4541 grade in heat-resistant version, distinguished from the original by slightly increased content of carbon, a higher range of concentration of titanium and silicon. Classified as heat-resistant steel according to EN 10095, it can operate up to 850℃ in a neutral environment. The material also works relatively well at high temperatures in the environment of gases containing Hydrogen Sulphide. It is resistant to water vapour, dry chlorine, carbon dioxide and oxide, ammonia vapour, and iodoforms and is used for the production of silencers, exhaust fumes, burners, aviation components, and tanks operating in high temperatures. It is resistant to fumes of sulphur oxide, fluorine, bromine vapour, hydrogen chloride and chloride.
Mechanical properties of 1.4541, X6CrNiTi18-10, 1.4544
- Tensile strength, Rm: 500 - 700N/mm2
- Yield strength, Rp0,2: >190N/mm2
- Elongation, A: >40%
- Modulus of elasticity, E: 200 GPa
- Hardness, HB: <215
- Thermal capacity, cp: 500 J * kg-1 * K-1
- Thermal conductivity, λ: 15 W * m-1 * K-1
- Resistance, Ω: 0.73 mkOhm*m
- Linear expansion coefficient, α: 16.0 * 10-6 K-1
Mechanical properties of 1.4878, X8CrNiTi18-10, X12CrNiTi18-9
- Tensile strength, Rm: 500 - 720 N/mm2
- Yield strength, Rp0,2: >190N/mm2
- Elongation, A: >40%
- Modulus of elasticity, E: 200 GPa
- Hardness, HB: <215
- Thermal capacity, cp: 500 J * kg-1 * K-1
- Thermal conductivity, λ: 15 W * m-1 * K-1
- Resistance, Ω: 0.73 mkOhm*m
- Linear expansion coefficient, α: 17.0-19.0 * 10-6 K-1
| Properties (MPa) | Temperatures | ||||||
|---|---|---|---|---|---|---|---|
| 600℃ | 700℃ | 800℃ | |||||
| Creep limit | R1/1000 | 110 | 45 | 15 | |||
| R1/10000 | 85 | 30 | 10 | ||||
| Creep resistance | Rz/1000 | 200 | 88 | 30 | |||
| Rz/10000 | 142 | 48 | 15 | ||||
| Rz/100000 | 65 | 22 | 10 | ||||
Heat treatment of steel 1.4541, X6CrNiTi18-10, 1.4878, X8CrNiTi18-10
- +AT annealing at 1020 - 1120℃ with cooling in water or air
In the above mentioned grades the company provides:
Substitutes, equivalents and other species designations
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