1.4910, X3CrNiMoNB17-13-3 - creep resistant, boiler steel for elevated temperatures according to EN 10088-1, EN 10302.
| Standard | Steel Grade | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Chemical Composition % | ||||||||||
| C: | Mn: | Si: | P: | S: | Cr: | Mo: | Ni: | N: | B: | |
| EN | 1.4910 - X3CrNiMoBN17-13-3 - X3CrNiMoN17-13-3 | |||||||||
| <0.04 | <2.0 | <0.75 | <0.035 | <0.015 | 16.0 - 18.0 | 2.0 - 3.0 | 12.0 - 14.0 | 0.10 - 0.18 | 0.0015 - 0.0050 | |
1.4910, X3CrNiMoBN17-13-3 - specifications and applications
High alloy, creep resistant steel with an austenitic structure with the addition of boron and nitrogen, the stainless equivalent of which is 1.4429 / 316LN. The addition of these elements increases heat resistance, creep resistance and grain growth. Steel is resistant to intergranular corrosion, some acids, chlorides and salts in low concentrations. It is characterized by good plasticity, impact resistance, excellent mechanical properties as for austenitic steel, and very good weldability. It is widely used in the power and chemical industry for parts of boilers, pressure vessels, installation elements, in the aerospace and automotive industries for the production of turbines and machine parts.
Mechanical properties of X3CrNiMoBN17-13-3, 1.4910 in condition +AT:
- Tensile strength, Rm: 550 - 750 N/mm2
- Yield strength, Rp0,2: >260N/mm2
- Elongation, A: >35%
- Impact resistance, KV: >100J
- Modulus of elasticity, E: 198 GPa
- Thermal capacity, cp: 450 J * kg-1 * K-1
- Thermal conductivity, λ: 16 W * m-1 * K-1
- Resistance, Ω: 0.77 mkOhm*m
- Linear expansion coefficient, α: 16.3 - 18.7 * 10-6 K-1
Properties at elevated temperatures +AT:
| Temperature | 50 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 550 | 600 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yield strength, Rp0,2 (MPa) | >234 | >205 | >187 | >170 | >159 | >148 | >141 | >134 | >130 | >127 | >124 | >121 |
Heat treatment
- Annealing at 1020 - 1100℃
- Forging and rolling at 1200 - 900℃