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NiCr 21 Mo | 2.4858 Material Datasheet

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Material Description

Material Number Material Name Material Number (single) Standard Scope Standard Status Country Successor VDA 231-106 classification Application temperature [°C]
2.4858 (VdTÜV WB 432-1 : 1999-06) NiCr 21 Mo 2.4858 VdTÜV WB 432-1 : 1999-06 VdTÜV WB 432-1 : 1999-06 replaced by VdTÜV WB 432-1: 2009-12 Replaced Germany NiCr21Mo 3.4 -10 - 450 1)
1) Remark: Valid for sheet and strip highly corrosion-resistant nickel alloy NiCr 21 Mo, material number 2.4858 VdTÜV-Wbl 432-2 : 1999-03 - seamless tube VdTÜV-Wbl 432-3 : 1999-06 - bar steel and forging weldable, cold- and hot-formable Application: in range of -10°C to 450°C - for pressure vessels according to TRB 100 and AD-Merkblatt W 2 - in the nuclear engineering as far as the rules of nuclear engineering or the object-related specifications permit the use Smelting: - electric-arc-process - inductive oven process - vacuum melted - AOD-process - 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 according to DIN 17744 : 2002-09: - is applied in the form of strips, sheets, tubes, bars, wires and forgings for corrosion-resistant construction components - it 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

Chemical Composition

Al [%] C [%] Cr [%] Cu [%] Mn [%] Mo [%] Ni [%] P [%] S [%] Si [%] Ti [%] Remainder
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Material Compliance

REACh RoHS
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Mechanical Properties

Semi-finished Product Condition Nominal Size [mm] Temperature [°C] Specimen Direction Tensile Strength [MPa] Yield Strength (0.2% offset) [MPa] Yield Strength (1.0% offset) [MPa] Elongation A [%] Elongation A80 [%]
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Toughness Data (Impact)

Semi-finished Product Condition Nominal Size [mm] Temperature [°C] Specimen Shape Specimen Direction Notch Impact Energy [J] Notch Bar Impact Strength [J/cm²]
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Welding and Joining

Procedure Welding and Joining - Evaluation Holding Temperature [°C] Information
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Heat Treatment

Semi-finished Product Heat Treatment Nominal Size [mm] Temperature [°C] Holding Time [h] Medium
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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
N08825 USA ASME SB-163
N08825 USA ASME SB-423
N08825 USA ASME SB-424
N08825 USA ASME SB-425
N08825 USA ASME SB-564
N08825 USA ASME SB-704
N08825 USA ASME SB-705
N08825 USA ASTM B 163
N08825 USA ASTM B 366
N08825 USA ASTM B 423
N08825 USA ASTM B 424
N08825 USA ASTM B 425
N08825 USA ASTM B 564
N08825 USA ASTM B 704
N08825 USA ASTM B 705
N08825 USA ASTM B 924
N08825 USA ASTM G 28
N08825 USA NACE MR-01-75

Producer/Supplier/Trade names

Tradename Supplier
Incoloy 825 Special Metals Wiggin Ltd., Hereford
Nicrofer 4221 VDM Metals GmbH, Werdohl
Nirosta 4858 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten