X7CrNiMoBNb16-16, 1.4986 austenitic heat-resistant steel according to EN 10088-1.
Table of content:
| Standard | Grade | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chemical composition % | |||||||||||||||
| C: | Mn: | Si: | P: | S: | Cr: | Ni: | Ti: | V: | Mo: | ||||||
| EN | 1.4986 - X7CrNiMoBNb16-16 | ||||||||||||||
| 0.04-0.10 | 0.3-0.6 | 0.3-0.6 | <0.045 | <0.030 | 15.5-17.5 | 15.5-17.5 | 0.4-1.2 | 0.05-0.10 | 1.6-2.0 | ||||||
1.4986, X7CrNiMoBNb16-16 – description
Heat-resistant steel. It contains niobium and boron along wich high amount of nickel and chromium.
Main features:
- Heat-resistant
- Creep-resistant
- Contains niobium – which strengthens solution, positively affects creep-resistance and improves pitting corrosion resistance.
- Contains boron – which improves high-temperature creep-resistance.
1.4986, X7CrNiMoBNb16-16 – physical properties
The general physical properties of the grade, as follows:
- Density: 7.9g/cm3
- Specific heat capacity: 460 J/kg*K
- Modulus of elasticity (Young module): 196 GPa
- Thermal conductivity at 20℃: 15 W/m*K
- Linear expansion coefficient: 16.6*10-6 1/℃
Welding
This grade is classified in the group 8.1 (austenitic steel with chromium content not greater than 19%) according to ISO / TR and should be weld as such.