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DOMADIA™ Normaperm (FeNi36): The Ultimate Low-Expansion Alloy for Precision Applications
🚀 Ever had a meltdown… because your metal did?
Have you ever experienced system failure because your material couldn’t handle the heat — literally?
No judgment—we’ve all been there. Whether you’re launching satellites, building lasers, or crafting microscopic marvels, there’s one thing you don’t want: your materials expanding and throwing everything out of alignment.
That’s where DOMADIA™ Normaperm, our high-precision FeNi36 alloy, steps in.
Engineered to stay cool, calm, and dimensionally stable, it’s the reliable partner you need when temperatures start playing games.
Oh, and did we mention?
✅ It’s an equivalent to Invar® 36 — but with its own swagger.
💡 What Is DOMADIA™ Normaperm?
DOMADIA™ Normaperm is a premium controlled expansion alloy, crafted from ~36% Nickel and Iron. It’s scientifically designed to resist thermal expansion—perfect for any situation where dimensional accuracy is non-negotiable.
🧪 Chemical Composition
| Element | Typical Content (% by weight) |
| Nickel (Ni) | ~36.0 |
| Iron (Fe) | Balance |
| Manganese (Mn) | ≤ 0.6 |
| Silicon (Si) | ≤ 0.3 |
| Carbon (C) | ≤ 0.05 |
| Sulphur (S) | ≤ 0.02 |
| Phosphorus (P) | ≤ 0.02 |
| Chromium (Cr) | ≤ 0.25 |
A simple, stable, and effective formula for thermal consistency.
🔧 Why DOMADIA™ Normaperm Stands Out
- Thermal Expansion? Practically None
~1.2 x 10⁻⁶ /K (20–100°C) — it barely budges. - Ultra-High Dimensional Stability
Built for serious precision: from aerospace to lab-grade gear. - Machine-Friendly
Machinability is smooth, especially in the annealed state. - Weld It Like a Pro
TIG, MIG, resistance welding — no sweat. - Corrosion Resistance
Holds its own in dry environments.
This alloy doesn’t just perform — it thrives under pressure.
🛠️ Where DOMADIA™ Normaperm Works Its Magic
🧰 Maintenance & Care Tips
Even superheroes need a little TLC—and so does DOMADIA™ Normaperm. While it’s built to last, a few simple practices will keep it performing like a rockstar:
🧼 Keep it clean
Wipe away dust and residue regularly to prevent surface contamination.
🔒 Store smart
Keep components in dry, temperature-controlled environments when not in use.
🛠️ Avoid over-machining
Stick to recommended machining speeds to prevent stress buildup.
🧪 Limit exposure to harsh chemicals
While corrosion-resistant, it’s best to avoid prolonged contact with corrosive agents.
🔧 Inspect welded joints
After welding, perform non-destructive testing to ensure structural integrity.
With basic care, DOMADIA™ Normaperm will give you precision for years to come.
📏 Technical Specs
| Property | Value / Range |
| Density | ~8.1 g/cm³ |
| Thermal Expansion (20–100°C) | ~1.2 x 10⁻⁶ /K |
| Electrical Resistivity | ~0.8 μΩ·m |
| Modulus of Elasticity | ~145 GPa |
| Melting Point | ~1425°C |
| Curie Temperature | ~230°C |
| Magnetic Properties | Ferromagnetic at room temperature |
| Tensile Strength (Annealed) | ~450–650 MPa |
| Yield Strength | ~275 MPa |
| Elongation (A5) | ~30–40% |
📚 Standards and Material Numbers
- Standards:
- DIN 17745
- DIN 17405
- DIN IEC 740-2
- Material Numbers:
- DIN 1.3910 (Cold drawn condition)
- DIN 1.3911 (Annealed condition)
🧱 Available Forms
Get it in the shape that fits your project:
Custom profiles per customer drawings and specifications
💡 Why Choose DOMADIA™ Normaperm?
- Equivalent to Invar® 36
- Reliable thermal performance
- Stable, strong, machine-ready
- Available in custom specs
- Meets international standards
- Easy to maintain and long-lasting
It’s everything your design team dreams of… in one tidy alloy.
⚠️ Disclaimer: Invar® is a registered trademark of Imphy Alloys / Aperam.
DOMADIA™ Normaperm is an independent product name representing a high-quality equivalent to Invar® 36, manufactured to meet or exceed relevant DIN and IEC specifications.
🔚 Conclusion: FeNi36 That Delivers Consistent Precision
DOMADIA™ Normaperm (FeNi36) is not just a metal—its german engineering! it’s a performance-driven solution for industries that demand dimensional stability, low thermal expansion, and long-term reliability. As an equivalent to Invar® 36, it meets global standards like DIN 17745 / 17405 / IEC 740-2, making it ideal for aerospace, electronics, cryogenics, and more.
Whether you’re developing cutting-edge technology or refining precision instruments, this alloy ensures your components remain accurate—even under extreme thermal conditions.
📞 Contact us today for datasheets, quotes, or technical consultation.
