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Nickel Alloy 400 in Sheet, Plate, Bar
SPECIFICATIONS: GRADE Alloy 400 | UNS N04400 | ASTM/ASME B127 / B164 | Werkstoff 2.4360
We are a stockist of alloy 400 that can be profiled and supplied in sheet, plate, and bar form meeting quality standards and requirements for many markets.
Properties
Alloy 400 (UNS N04400) is a single-phase solid-solution nickel-copper alloy with excellent corrosion resistance to a wide range of media.
This alloy is characterised by:
- Corrosion resistance in a wide range of marine and chemical environments
- Freedom from chloride induced stress-corrosion cracking
- Good mechanical properties from sub-zero temperatures up to about 550°C (1020°F)
- Approval for pressure vessels with wall temperatures from -10-425°C (14-800°F) according to VdTÜV-Wbl.263 and up to 900°F (480°C) according to ASME boiler and pressure vessel code
- Good workability and weldability
MORE INFO
Chemical Composition (average %)
| Alloy 400 | Ni | Fe | C | Mn | Si | Cu | Al | S |
|---|---|---|---|---|---|---|---|---|
| Min | 63.0 | 1.0 | - | - | - | 28.0 | - | - |
| Max | - | 2.5 | 0.15 | 1.25 | 0.5 | 34.0 | 0.5 | 0.02 |
Metallurgical Structure
Alloy 400 has a face-centred cubic structure.
Corrosion Resistance
Alloy 400 has outstanding resistance to neutral and alkaline salts. It has been a standard material for salt plants for many years. This alloy is one of the few metallic materials which can be used in contact with fluorine, hydrofluoric acid, hydrogen fluoride or their derivatives. Alloy 400 shows very high resistance to caustic alkalies. Behaviour in seawater is also excellent, with improved resistance to cavitation corrosion compared with copper-base alloys. It can be used in contact with dilute solutions of mineral acids such as sulphuric and hydrochloric acids, particularly if they are air-free. However , as the alloy contains no chromium, corrosion rates may be increased significantly in oxidising conditions. Whilst alloy 400 can be considered immune to chloride-ion stress cracking, it can stress crack in the presence of mercury or in most aerated HF vapours. A stress relieving heat treatment is applied in such cases.
DESIGNATION AND STANDARDS
| Country National Standards |
Material Designation |
Specification | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Chem. Compo- sition |
Tube & Pipe | Sheet & Plate |
Rod & Bar |
Strip | Wire | Forgings | |||
| Seamless | Welded | ||||||||
| France AFNOR | NU30 | ||||||||
| Germany DIN VdTÜV2) |
W.-Nr .2.4360 NiCu30Fe |
17743 263 |
17751 263 |
17750 263 |
17752 263 |
17750 | 17753 | 17754 263 |
|
| United Kingdom BS |
NA13 | 3074 | 3072 | 3076 | 3073 | 3075 | |||
| USA ASTM ASME ASME Code Case QQ-N-281 |
UNS N04400 | Table 1 | B163/ 165 SB163/ 165 4574 |
B127 SB127 4544 Form 4,6 |
B164 SB164 4675 Form 1 |
B127 SB127 Form 5 |
Form 7 |
B564 SB564 4675 Form 2 |
|
| ISO | NiCu30 | 9722 | 6207 | 6208 | 9723 | 6208 | 9724 | 9725 | |
MECHANICAL PROPERTIES
The following properties are applicable to alloy 400 in the stated conditions and specifications. Specified properties of material outside these ranges are subject to special enquiry.
| Condition | Specification | Tensile Strength | 0.2% Yield Strength | 1.0% Yield Strength | Elong A5% | Brinell Hardness HB | |||
|---|---|---|---|---|---|---|---|---|---|
| N/mm2 | Ksi | N/mm2 | Ksi | N/mm2 | Ksi | ||||
| Annealed | DIN, VdTÜV – Wbl. | 450 | 65 | 180 | 26 | 210 | 30 | 35 | ≤ 150 |
| ASTM, ASME, QQ-N, BS | 480 | 70 | 195 | 28 | 220* | 35 | - | ||
| Stress Relieved | DIN | 550 | 80 | 300 | 44 | 25 | -170 | ||
| VdTÜV-Wbl. | 580 | 84 | 400 | 58 | 18 | - | |||
| ASTM, ASME, BS | 550 – 600 | 80 – 87 | 275 – 415 | 40 – 60 | 20 | - | |||
| Hard | DIN | 700 | 102 | 650 | 94 | 3 | -210 | ||
| ASTM, ASME, QQ-N | 690 – 760 | 100 – 110 | 620 | 90 | 2 | - | |||
Minimum mechanical properties at room temperature.
*BS only
Please Note: The figures quoted are intended for guidance only. For further information, please refer to the standards listed or contact our sales or QA department.
APPLICATIONS
Typical applications include:
- Feed-water and steam generator tubing in power plants
- Brine heaters and evaporator bodies in salt plants
- Sulphuric and hydrofluoric acid alkylation plants
- Industrial heat exchangers
- Cladding for crude oil distillation columns
- Splash-zone sheathing in offshore structures
- Propeller and pump shafts for seawater service
- Plants for uranium refining and isotope separation in the production of nuclear fuel pumps and valves used in the manufacture of chlorinated hydrocarbons
- Monoethanolamine (MEA) reboiler tubes