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Alloy 625 / 2.4856

Alloy 625 is a low carbon (0.03%) nickel-chromium-molybdenum-niobium alloy which has excellent corrosion resistance to a wide range of corrosive media. Alloy 625 is normally supplied in annealed condition for wet corrosion applications and is TÜV-approved for pressure vessels in the temperature range from -196°C to 450°C. In annealed condition (grade 1) Alloy625 is characterized by:

- good mechanical property

- Resistance to chlorine-induced stress corrosion cracking

- high resistance to mineral acids such as nitric, phosphoric, sulfuric, and hydrochloric acid

- good resistance to alkalis and organic acids

- exceptional resistance to pitting, crevice, erosion and intergranular corrosion

Alloy 625 / 2.4856 metal powder for 3d metal printing

We are pleased to offer you powder for 3D printing made of 2.4856 (Alloy 625). Send us your inquiry.

Material Data Sheet

Material Designation 2.4856
Alloy Alloy 625
EN Material Symbol NiCr22Mo9Nb
UNS N 06625
VdTÜV Data Sheet 499

Main fields of application of alloy 625

2.4856 is used for:

- Natural gas pipelines

- Production systems and pipe coverings of riser pipes in oil production

- Preparation of phosphoric acid

- Shipbuilding and marine water lines

- Plants for the treatment of radioactive waste

- Flue gas scrubbers and dampers in flue gas cleaning systems

Chemical composition of alloy 625

C Si Mn P S Cr Mo
% ≤ % ≤ % ≤ % ≤ % % %
0.03 0.4 0.5 0.01 0.01 21.0-23.0 8.0-10.0
Mo Ni Al Co Fe Ti Nb+Ta
% % % ≤ % ≤ % % %
8.0-10.0 rest 0.4 1.0 0.4 0.4 3.2-3.8

Characteristics of alloy 625

Temperature Range Wet corrosion and high-temperature variant possible
Density 8.44 g/cm³
Melting Range 1290°C - 1350°C
ISO-V notch impact toughness (average at room temperature acc. to DIN EN 10045 part 1) lengthwise ≥ 125 J/cm²
  across ≥ 100 J/cm²

Annealed Alloy 625 loses notched impact strength at room temperature after having been exposed to temperatures in the range from 538 ° C to 593 ° C.

Filler metal (for welding with alloy 625)

Welding rods and wire electrodes:

Nicrofer S 6020 - FM 625 (2.4831)
DIN EN ISO 18274: S Ni 6625 (NiCr22Mo9Nb)
UNS N06625
AWS: 5.14: ErNiCrMo3

Covered electrodes:

DIN EN ISO 14172: E Ni 6625 (NiCr22Mo9Nb)
UNS W86112
AWS A5.11: ENiCrMo-3

Delivery program

Sheets / Plates mm

0.5 < 76.2

Bars / Billets dia. mm

5.0 - 450

Precision strip mm

0.1 - 0.3

With short delivery time:

plates or sheets, tubes, flanges, forged or die-cut rings and round blanks, elbows, T-fittings, reductions, screws, nuts or washers according to your request. According to your individual wishes, we are able to cut our material with our plasma- or water jet cutter. Our material is stocked in superformats of 2000x6000mm. Cut to size on request.

Material Outlet by Hempel

ECONOXX.com offers buyers a new and uncomplicated procurement channel, which also includes small quantities and materials in special alloys at favourable conditions.

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