Alloy C4 
2.4610 – N06455


Material description

The material 2.4610 is an austenitic nickel-molybdenum-chromium alloy with a low carbon, iron and silicon content.

Thanks to the combination of chromium with a high molybdenum content, this alloy has excellent resistance to a wide range of chemical media such as contaminated, reducing mineral acids, chlorides and organic and inorganic chloride-contaminated media. The chemical composition of the material also ensures good structural stability and high resistance to sensitisation.

In addition, 2.4610 (Alloy C4) has excellent resistance to pitting, crevice and stress corrosion cracking.


  • Excellent resistance to many chemical media
  • Excellent resistance to pitting, crevice and stress corrosion cracking
  • Good structural stability
  • High resistance to sensitisation


  • Flue gas desulphurisation
  • Chemical industry (e.g. acetic acid production, chemical fertilisers)

Material data

Material no.: 2.4610
Name: Alloy C4
UNS no.: N06455
ASTM: B574
VdTÜV: 424
Other: DIN 17740/17752
Material type: Corrosion-resistant alloy

Chemical composition in %

ASTM B574VdTÜV Material sheet 424
Mo14,0 – 17,014,00 – 17,00
Cr14,0 – 18,014,50 – 17,50
Fe, max.3,03,00
Co, max.2,02,00
C, max.0,0150,009
Si, max.0,080,050
Mn, max.1,01,00
P, max.0,040,020
S, max.0,030,010
Ti, max.0,70,70

Mechanical properties

solution annealedBar
D ≤ 88,9 mm
Bar | forging
D ≤ 160 mm |  D ≤ 250 mm
Rm (MPa)≥ 690700 – 900
Rp 0,2 (MPa)≥ 276≥ 280
Rp 1,0 (MPa)≥ 315
A (%)≥ 40≥ 40
Av (J)≥ 96

The specified values are non-binding guide values.

Data sheet