1.4887 Heat Resisting Austenitic Steel
1.4887 is an alloy known as X10NiCrSiNb35-22. It is an austenitic heat-resisting steel with a density of 8 g/cm³. This steel exhibits good oxidation and scale resistance, as well as good mechanical properties with high strength at elevated temperatures. The chemical composition of this steel includes carbon (C) up to 0.15%, silicon (Si) up to 2%, manganese (Mn) up to 2%, nickel (Ni) between 33% and 37%, phosphorus (P) up to 0.03%, sulfur (S) up to 0.015%, chromium (Cr) between 20% and 23%, and nitrogen (N) up to 0.11%. The mechanical properties of this steel include a tensile strength of 500 MPa, minimum yield strength of 270 MPa, proof strength of 270 MPa, and minimum elongation at fracture of 40%1. The Brinell hardness of this steel is 200 HB1. It has a maximum application temperature for air of 1100°C.
Our Supply
Smelting line: VIM,VAR, IM, ESR, PESR, LF, VD, AOD
Danieli roll line: round & flat diameter 150mm max
Forged line: 800mm max
Heat-treatment line: annealed, quenched tempered, solution
Machining line: Turning, Milling, CNC
Chemical Composition
| BS EN | C | Si | Mn max | P max | S max | Cr | Ni | N | Others |
| 1.4887 | max 0.15 | 1.0-2.0 | max 2.0 | 0.030 | 0.015 | 20-23 | 33-37 | max 0.11 | Nb 1.0-1.5 |
Mechanical Properties
| BS EN | Heat condition | Hardness HB max | Proof strength Rp1.0 N/mm2 min. | Tensile strength | Elongation A% min. long products |
| 1.4887 | +AT solution annealed | 200 | 300 | 500-650 | 40 |
Our advantage of heat resisting steel
- High creep limit and lasting strength;
- Easy smelting and processing and good casting, forging and welding properties;
- high oxidation resistance and corrosion resistance;
- high high-temperature mechanical properties;
- Small expansion coefficient and good thermal conductivity;
- Good processability and economy.
- Organization stability at high temperature
- Low cost
What is heat resisting steel?
Heat resisting steel is a kind of special steel that can maintain good mechanical properties and antioxidant properties under high temperature environment. It has high temperature stability, oxidation resistance and creep resistance, can maintain high strength and hardness at high temperatures, not easy to soften and deformation.
Why choose heat resisting steel?
1. High-temperature stability:
heat resisting steel at high temperatures to maintain high strength and hardness, will not occur obvious softening and deformation.
2. Antioxidant properties:
heat resisting steel surface to form a dense layer of oxide film, can effectively prevent oxidation reaction, slow down the oxidation rate of the material.
3. Creep resistance:
heat resisting steel at high temperatures can resist plastic deformation and creep phenomenon, to maintain good shape stability and dimensional accuracy.
4. Good processing performance:
heat resisting steel has good plasticity and weldability, can be convenient for hot processing and welding.
Application of heat resisting steel
heat resisting steel is widely used in aerospace, energy, chemical industry and other fields, mainly including the following aspects:
1. Aerospace field:
heat resisting steel used in the manufacture of aero-engine turbine blades, turbine discs, combustion chambers and other components, as well as aerospace spacecraft insulation materials.
2. Energy field:
heat resisting steel used in the manufacture of thermal power plant boiler supercritical and ultra-supercritical boiler piping and heating surface, and nuclear power plant nuclear reactor pressure vessel and fuel components.
3. Chemical industry:
heat resisting steel is used in the manufacture of chemical equipment reactor, separator, oil cracker pipeline, etc., which can withstand high temperature, high pressure and corrosive media.
4. Other fields:
heat resisting steel is also widely used in metallurgy, machinery, automobile and other fields, used in the manufacture of a variety of parts and tools under high-temperature working environment.
