NiCr21Mo | 2.4858 Material Datasheet
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| Material Number | Material Number (single) | Standard | Range of Application | Standard Status | Country | Successor | Application temperature [°C] | |
|---|---|---|---|---|---|---|---|---|
| 2.4858 (DIN 17744 : 2002-09) | 2.4858 | DIN 17744 : 2002-09 | DIN 17744 : 2002-09 replaced by DIN 17744 : 2020-12 | Replaced | Germany | NiCr21Mo | -10 - 450 | 1) |
| 1) Remark: According to the VdTÜV-Werkstoffblatt editions VdTÜV-Wbl 432-1 : 1999-06 (sheet metal, strip metal), VdTÜV-Wbl 432-2 : 1999-03 (seamless tube) and VdTÜV-Wbl 432-3 : 1999-06 (bar steel, forging) as well as VdTÜV 541 : 2001-06 (seamless compound pipes, coating material), the material NiCr21Mo with the material number 2.4858 is used for pressure vessels according to TRB 100 and, with interpreting the AD-Merkblatt W 2 faithfully to its meaning, for temperatures from -10 to 450 degrees. The highly corrosion-resistant nickel alloy is used in the nuclear engineering as far as the rules of nuclear engineering or the object-related specifications permit the use of - 10 to 450 °C. With observance of the generally acknowledged rules of technology, the suitability for welding of the nickel alloy is approved for metal-arc welding and gas-shielded arc welding (short arc). A heat treatment is not necessary, a preheating - except for the removal of condensed moisture - ought to be omitted. The maximum holding temperature is 200 °C. The material is cold- and hot-formable and, in accordance with DIN 50914, it is resistant to intercrystalline corrosion in the welded condition, too. The maximum eroding rate in the Huey-test is 0,6 mm/year (mean value of the 5 testing periods) in the as-delivered condition. The following is valid for the material according to DIN 17744 : 2002-09: the nickel alloy is applied in the form of strips, sheets, tubes, bars, wires and forgings for corrosion-resistant construction components. The alloy possesses very good resistance to reducing as well as to oxidizing acids, to stress cracking corrosion as well as to pitting and crevice corrosion. It has proven outstandingly worthwile in solutions of sulphuric and phosphoric acid. Applications for the chemical manufacturing technology, for plants for the prevention of air pollution, for tubes for the extraction of oil and gas, for the recycling of nuclear fuel assemblies, for the acid production for cellulose digesters in the paper industry as well as for pickling facilities. Processing properties: Formability: good Weldability: good (Werkstoffblatt/Wbl: material specification Merkblatt: specification sheet) |
Chemical Composition
| Al [%] | C [%] | Co [%] | Cr [%] | Cu [%] | Mn [%] | Mo [%] | Ni [%] | P [%] | S [%] | Si [%] | Ti [%] | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | 1)2) |
| 1) Source: blur | ||||||||||||
| 2) Remark: blur |
Mechanical Properties
| Semi-finished Product | Condition | Strength Abbrevation | Nominal Size [mm] | Temperature [°C] | Tensile Strength [MPa] | Yield Strength (0.2% offset) [MPa] | Yield Strength (1.0% offset) [MPa] | Elongation A100 [%] | Elongation A [%] | Hardness HB | HBW | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | 1)2) |
| blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | 1)2) |
| blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | 3)4) |
| blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | 5)6) |
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| blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | 7)8) |
| blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | 7)8) |
| blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | 7)8) |
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Physical Properties
| Temperature [°C] | Melting Temperature [°C] | Density [g/cm³] | Young's Modulus [GPa] | Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1] | Thermal Conductivity [W/(m*K)] | Specific Electrical Resistance [µΩm] | Mean Specific Heat Capacity [kJ/(kg*K)] | Magnetizeability | |
|---|---|---|---|---|---|---|---|---|---|
| blur | blur | blur | blur | blur | blur | blur | blur | blur | 1) |
| blur | blur | blur | blur | blur | blur | blur | blur | blur | 1)2) |
| blur | blur | blur | blur | blur | blur | blur | blur | blur | 3) |
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| blur | blur | blur | blur | blur | blur | blur | blur | blur | 3) |
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| 2) Remark: blur | |||||||||
| 3) Source: blur |
Welding and Joining
| Procedure | Welding and Joining - Evaluation | Interpass Temperature [°C] | Added Materials | |
|---|---|---|---|---|
| blur | blur | blur | blur | 1) |
| blur | blur | blur | blur | 1) |
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| 1) Source: blur |
Heat Treatment
| Heat Treatment | Nominal Size [mm] | Temperature [°C] | Medium | |
|---|---|---|---|---|
| blur | blur | blur | blur | 1)2) |
| blur | blur | blur | blur | 1)3) |
| blur | blur | blur | blur | 1)3) |
| 1) Source: blur | ||||
| 2) Remark: blur | ||||
| 3) Remark: blur |
Cross Reference
| Material Name | Country | Standard |
|---|---|---|
| NS 142 | China | GB T 15007 |
| NA 16 | Great Britain | BS 3072 |
| NA 16 | Great Britain | BS 3073 |
| NA 16 | Great Britain | BS 3074 |
| NA 16 | Great Britain | BS 3076 |
| NiFe30Cr21Mo3 | International | ISO 9722 |
| NCF 825 | Japan | JIS G 4901 |
| NCF 825 | Japan | JIS G 4902 |
| NCF 825TP | Japan | JIS G 4903 |
| NCF 825TB | Japan | JIS G 4904 |
| NFC 825 | South Korea | KS D 3531 |
| NFC 825 | South Korea | KS D 3532 |
| N08825 | USA | UNS |
| SB-163 UNS N08825 | USA | ASME SB-163 |
| SB-423 UNS N08825 | USA | ASME SB-423 |
| SB-424 UNS N08825 | USA | ASME SB-424 |
| SB-425 UNS N08825 | USA | ASME SB-425 |
| SB-564 UNS N08825 | USA | ASME SB-564 |
| SB-704 UNS N08825 | USA | ASME SB-704 |
| SB-705 UNS N08825 | USA | ASME SB-705 |
| B163 UNS N08825 | USA | ASTM B163 |
| B366 UNS N08825 | USA | ASTM B366 |
| B423 UNS N08825 | USA | ASTM B423 |
| B424 UNS N08825 | USA | ASTM B424 |
| B425 UNS N08825 | USA | ASTM B425 |
| B564 UNS N08825 | USA | ASTM B564 |
| B704 UNS N08825 | USA | ASTM B704 |
| B705 UNS N08825 | USA | ASTM B705 |
| B904 UNS N08825 | USA | ASTM B924 |
| G28 UNS N08825 | USA | ASTM G28 |
| N08825 | USA | NACE MR-01-75 |
| NiCr21Mo | Germany | DIN 17750 |
| NiCr21Mo | Germany | DIN 17751 |
| NiCr21Mo | Germany | DIN 17752 |
| NiCr21Mo | Germany | DIN 17753 |
Producer/Supplier/Trade names
Material Compliance
| REACh | RoHS |
|---|---|
| blur | blur |