Specifications
Surface Treatments
Certifications
- ISO 9001 - 2015 Certified
- PED 2014/68/EC
- NACE MR0175/ISO 15156-2
- NORSOK M-650
- DFAR
- MERKBLATT AD 2000 W2/W7/W10
DIN 17743 NiCu30Fe / Werkstoff 2.4360 - Monel 400 European Equivalent
DIN 17743 is the German standard for wrought nickel-copper alloys, registering NiCu30Fe as Werkstoff 2.4360: the European equivalent of Monel® 400 / UNS N04400. Nickel 63 to 70 percent, copper 28 to 34 percent, iron 1.0 to 2.5 percent. The chemistry sits inside the ASTM bracket with two tighter caps - carbon 0.15 max against ASTM 0.30, and sulphur 0.020 max against ASTM 0.024. Monel® is a registered trademark of Special Metals Corporation; TorqBolt is not authorized by, affiliated with or endorsed by Special Metals.
DIN 17743 Scope and Product Forms
DIN 17743 covers semi-finished wrought nickel-copper product in all common forms: round bar, flat bar, wire, plate, sheet, strip, seamless and welded pipe, tube, forgings and fasteners. The chemistry table is single across forms; mechanical tables shift with thickness and condition (annealed, cold-drawn, stress-relieved). The free-machining variant equivalent to Monel R-405 / UNS N04405 is not registered under 17743 and ships against ASTM B164 Class B.
Companion standards: DIN 17742 definitions; DIN 17744 nickel-iron-chromium alloys (Inconel family). EN 10269 cites Werkstoff 2.4360 for fasteners under PED 2014/68/EU.
Composition Window: DIN 17743 vs ASTM B164
Chemistry against the matching ASTM specs: ASTM B164 (rod, bar, wire), ASTM B127 (plate, sheet), ASTM B165 (pipe, tube), ASTM B564 (forgings). Weight percent.
| Element | DIN 17743 NiCu30Fe (2.4360) | ASTM B164 / B127 / B564 / F468 (N04400) | Typical mill |
|---|---|---|---|
| Nickel + Cobalt | 63.0 min | 63.0 - 70.0 | 66.0 |
| Copper | 28.0 - 34.0 | 28.0 - 34.0 | 31.5 |
| Iron | 1.0 - 2.5 | 2.5 max | 1.5 |
| Manganese | 2.0 max | 2.0 max | 1.0 |
| Carbon | 0.15 max | 0.30 max | 0.10 |
| Silicon | 0.50 max | 0.50 max | 0.20 |
| Sulphur | 0.020 max | 0.024 max | 0.008 |
| Aluminium | 0.50 max residual | not specified | < 0.05 |
| Chromium | not specified | not specified | < 0.05 |
The two cells that change are carbon and sulphur, both tightened against the ASTM bracket. Iron is expressed as a band (1.0 to 2.5) rather than a one-sided maximum.
Tighter Chemistry Caps: Carbon 0.15 and Sulphur 0.020
The carbon 0.15 percent maximum is half the ASTM 0.30 ceiling. The cap keeps the alloy weldable without post-weld heat treatment and suppresses grain-boundary carbide precipitation. EU PED 2014/68/EU audits typically refuse heat numbers above 0.15 carbon, so the DIN cap is the practical industry cap inside Europe.
The sulphur 0.020 percent maximum tightens the ASTM 0.024 cap. Low sulphur protects hot-working ductility and avoids manganese-sulphide stringers that interrupt the corrosion film in hydrofluoric acid and seawater service. The cap matches the typical 3.2 MTC class shipped against NACE MR0175 / ISO 15156. See chemical composition for the full element-by-element discussion.
Mechanical Requirements (Annealed Bar)
DIN 17743 annealed values align with ASTM B164 annealed; cold-worked and stress-relieved values rise with reduction. Full property tables on mechanical properties.
| Property | Annealed bar (typical) | Cold-drawn bar (typical) |
|---|---|---|
| Tensile strength | 480 MPa min (70 ksi) | 580 to 760 MPa |
| Yield strength (0.2 percent) | 195 MPa min (28 ksi) | 380 MPa min |
| Elongation (4D) | 35 percent min | 20 percent min |
| Hardness | 110 to 150 HB | 140 to 220 HB |
| Density | 8.83 g/cm3 | 8.83 g/cm3 |
Forgings against ASTM B564 Class A drop to the annealed yield. Cold-drawn ships stress-relieved for stud bolts and hex bolts to ASTM F468 / EN 10269.
EN, BS, AFNOR and JIS Cross-References
The same NiCu30Fe chemistry registers under nine national designations. Specify DIN 17743 NiCu30Fe (2.4360) plus the matching ASTM on EU-bound purchase orders.
| System | Designation | Region |
|---|---|---|
| Trade name | Monel 400 / Alloy 400 | USA / global |
| UNS | N04400 | International |
| Werkstoff | 2.4360 | Germany |
| DIN | 17743 NiCu30Fe | Germany |
| EN | NiCu30Fe | Europe |
| BS | 3076 NA13 | United Kingdom |
| AFNOR | NU30 | France |
| JIS | NW4400 | Japan |
| GOST | NMZhMts 28-2.5-1.5 | Russia |
Typical EU purchase-order line: "Werkstoff 2.4360 per DIN 17743, equivalent UNS N04400 per ASTM B164 / B127 / B564, EN 10204 type 3.1 MTC". Sour-service work adds NACE MR0175 / ISO 15156-3.
Related Pages
Cross-reference: UNS N04400, chemical composition, nickel-copper alloy, mechanical properties.
Matching ASTM specs: ASTM B164 (rod, bar, wire), ASTM B127 (plate, sheet, strip), ASTM B165 (pipe, tube), ASTM B564 (forgings, flanges), ASTM F468 (bolts), ASTM F467 (nuts), NACE MR0175.
Product forms: round bar, plate, sheet, seamless pipe, tubing, wire, forging, flanges, fittings, bolts, stud bolts, hex bolts, fasteners.
Frequently Asked Questions
What is DIN 17743? DIN 17743 is the German standard for wrought nickel-copper alloys. It registers NiCu30Fe (Werkstoff 2.4360) as the European designation for Monel 400 / UNS N04400. The standard covers rod, bar, wire, plate, sheet, strip, pipe, tube, forgings and fasteners.
What is Werkstoff 2.4360? Werkstoff 2.4360 is the German material number for NiCu30Fe per DIN 17743. The same alloy registers as UNS N04400 in the USA, BS 3076 NA13 in the UK and NU30 in France.
Is DIN 17743 equivalent to ASTM B164? Yes on nickel and copper. The nickel 63 to 70 percent and copper 28 to 34 percent ranges match. DIN 17743 caps carbon at 0.15 max against ASTM 0.30, and sulphur at 0.020 max against ASTM 0.024. Iron is bracketed 1.0 to 2.5 percent in DIN against a 2.5 maximum in ASTM.
Why is DIN 17743 carbon tighter than ASTM? The 0.15 cap keeps the alloy weldable without post-weld heat treatment and prevents grain-boundary carbide precipitation in pressure-vessel and piping service. EU PED 2014/68/EU audits typically refuse heat numbers above 0.15 carbon.
Which European equivalents map to DIN 17743 NiCu30Fe? EN designation NiCu30Fe, BS 3076 NA13 (UK), AFNOR NU30 (France), JIS NW4400 (Japan). UNS cross-reference is N04400.
Request a Quote
For DIN 17743 NiCu30Fe (Werkstoff 2.4360) material to EN 10204 type 3.1 or 3.2 MTC, send drawing, quantity and form to info@torqbolt.com or WhatsApp +91-22-66157017. Mumbai stock plus worldwide export through JNPT. EU export 10 to 14 working days with heat-numbered MTC.
Full Monel 400 alloy reference on the main page.
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