What is 1.6981 (21CrMoNiV4-7)
The material 1.6981 (21CrMoNiV4-7) is an alloyed, heat-resistant engineering steel with good weldability. It is characterized by its high high-temperature strength and good mechanical properties.
International identifiers
Properties of the material 1.6981 (21CrMoNiV4-7)
Special properties
21CrMoNiV4-7 is weldable
Calculate the weight quickly and easily
Heat treatment 1.6981
Chemical composition of 1.6981
| 21CrMoNiV4-7 1.6981 | C | Si | Mn | P | S | Cr | Mo | Ni | V |
|---|---|---|---|---|---|---|---|---|---|
| min. | 0,17 | 0,15 | 0,35 | 0,9 | 0,65 | 0,2 | 0,25 | ||
| max. | 0,25 | 0,35 | 0,85 | 0,03 | 0,035 | 1,2 | 0,80 | 0,8 | 0,35 |
Areas of application for 1.6981
Instructions for use
- Turbine components: Suitable due to its high high-temperature strength and creep resistance at elevated temperatures.
- Turbine shafts: Suitable for highly stressed components that require high strength and good toughness.
- Valve components: Suitable due to its good mechanical properties and high-temperature strength.
- Pressure-loaded components: Suitable for components that must remain reliably load-bearing even at elevated temperatures.
- Welded structures: Suitable for corresponding welded components due to its general weldability.
Areas of application
- Turbine construction
- Power plant construction
- Mechanical engineering
- Plant engineering
- Manufacturing of components subjected to high temperatures
Form of supply and availability of 1.6981
In stock
Immediately available from stock
Form of supply
round bars, forged, quenched and tempered
Sawn blank
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.
![[Translate to Englisch:]](/fileadmin/user_upload/produkt-fotos/1.6981_Rundstahl.jpg "[Translate to Englisch:]")
![[Translate to Englisch:]](/fileadmin/user_upload/produkt-fotos/1.6981_Stahlblock.jpg "[Translate to Englisch:]")
Frequently asked questions about material 1.6981:
It is an alloyed, heat-resistant quenched and tempered steel specifically designed for use at elevated temperatures.
The steel is precisely alloyed with chromium (Cr), molybdenum (Mo), nickel (Ni), and vanadium (V) (hence the chemical designation 21CrMoNiV4-7), which gives it its special high-temperature strength properties.
Basically, yes. However, due to its alloy composition and heat-resistant properties, the specific welding requirements (such as any necessary preheating and post-weld treatment) must be followed precisely.
Notice: Specifications contained in following data sheet are provided as a description, liability is excluded!