1.4876 (Alloy 800) Material Data Sheet
The material 1.4876 is a nickel-iron-chromium alloy, which is austenitic and heat-resistant. Good resistance is given in oxidizing, reducing and nitrogenous atmospheres. Metallurgical stability is visible in long-term use at high temperatures.
Areas of application
The main areas of application for the Alloy 800 are in the petroleum industry and in furnace, steam boiler and apparatus construction.
| Weldability | Good |
| Machinability | 4 (1 = bad - 10 = good) |
| Polishing | Yes |
| Corrosion resistance | Good |
| Malleability | Medium |
| Mechanical properties | Good |
Welding: 1.4876 steel can be welded with all processes (TIG welding; MAG solid wire, ARC welding). Nickel alloys are shown as coated stick electrodes for MMA and UP welding.
Forging: Before forging, the steel should be heated to more than 1150°C. The forging process takes place at approx. 1150°C with subsequent water cooling.
Cold forming: Due to the high strain hardening, higher forming forces and intermediate annealing are required.
Corrosion resistance: The corrosion resistance is increased compared to conventional chrome-nickel-molybdenum steel and there is resistance to intergranular corrosion. The scale resistance is improved by the addition of chromium and aluminum. Compared to ferritic chrome steels, the tendency towards embrittlement is lower by 700°C and above 950°C.
Machining: Machining is difficult due to the high alloy content. Here you should work with high-quality tools and low cutting parameters.
Mechanical properties at room temperature: + AT
| Rp0,2 | A | Z | KV |
| N/mm² | % | % | J |
| ≥ 170 | ≥ 30 | ≥ 50 | ≥ 100 |
Physical Properties
| 1.4876 Density (kg/dm3) | 8,0 |
| Electrical resistance at 20°C (Ω mm2 /m) | 1,0 |
| Thermal conductivity at 20°C (W/m K) | 12 |
| Thermal conductivity at 500°C (W/m K) | 17 |
| Specific heat capacity at 20°C (J/kg K) | 550 |
Special properties
Can be used up to 1100°C air
Non-magnetic quality (μr <1.01)
Processing
| Cold forming | is possible, followed by intermediate annealing |
| Cold upsetting | is possible |
| Open die and drop forging | is possible |
| Machining | with care possible |
| Automated machining | no |
Heat treatment for the delivery condition
| Temperature | Cooling | |
| Hot forming | 1.200°C – 900°C | water |
Heat treatment | ||
| Solution annealing (+AT) | 1100°C – 1150°C | water, air (< 2 mm) |
| 1.4876 Alloy 800 | C | Si | Mn | P | S | Cr | Ni |
|---|---|---|---|---|---|---|---|
| min. | 19,0 | 30,0 | |||||
| max. | 0,12 | 1,0 | 2,0 | 0,030 | 0,015 | 23,0 | 34,0 |
| 1.4876 Alloy 800 | Al | Cu | N | Ti | Al+Ti |
|---|---|---|---|---|---|
| min. | 0,15 | 0,15 | 0,15 | ||
| max. | 0,60 | 0,30 | 0,60 | 0,60 | 1,00 |
Rolled sheet, solution annealed / quenched, optionally etch
The processing with the saw is a mechanical processing of the material, which results in a significantly lower unintended deformation and increased hardness for the existing structure, such as the thermal cutting. Thus, the machined workpiece has a homogeneous structure even at the edge, which does not change in the continuation of the material.
This circumstance allows immediate finishing of the workpiece with milling or drilling . So it is not necessary to anneal the material or make a similar operation beforehand.
Do you have any questions?
We are happy to answer your questions and make you an offer for these and other materials. Contact us now for more information.
Your contact person Kevin Simon Bräunig+49 (0) 35263-665-27braeunig@stahlportal.com
Notice: Specifications contained in following data sheet are provided as a description, liability is excluded!
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