Alloy SteelCoil
Description (English)
Invar 36 strip and coil are nickel-iron low thermal expansion products used in selected precision fabrication and industrial applications. The alloy contains approximately 36% nickel and offers low thermal expansion over a defined temperature range.
Size Range
- Thickness: 0.05–3.0 mm
- Width: 5–600 mm
- Delivery Form: Coil or cut strip, subject to availability
- Edge Condition: Slit edge or mill edge, subject to availability
Grade Specification
| System | Value |
|---|---|
| 🇺🇸 ASTM | Invar 36, Alloy 36, UNS K93600 / K93601 / K93603 |
| DIN / Werkstoff | 1.3912, Vacodil 36 |
| SEW | SEW 385 |
| China (YB) | 4J36 (YB/T 5241) |
| Russia (GOST) | 26H, Fe-Ni36 |
| UK / Inco / Special Metals | Nilo® 36 |
Chemical Composition
| Element | Value |
|---|---|
| Nickel (Ni) | 35.0–38.0% |
| Iron (Fe) | Balance |
| Carbon (C) | ≤ 0.10% |
| Manganese (Mn) | ≤ 0.60% |
| Silicon (Si) | ≤ 0.35% |
| Phosphorus (P) | ≤ 0.025% |
| Sulfur (S) | ≤ 0.025% |
| Chromium (Cr) | ≤ 0.50% |
| Molybdenum (Mo) | ≤ 0.50% |
| Cobalt (Co) | ≤ 1.00% |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 490 MPa (71 ksi) |
| Yield Strength (Rp0.2) | ≥ 240 MPa (35 ksi) |
| Elongation (A5) | ≥ 42 % |
| Brinell Hardness | ≤ 200 HB |
Physical Properties
| Property | Unit | Value |
|---|---|---|
| Density | - | 8.10 g/cm³ |
| Melting Point | - | 1,430 °C |
| Curie Temperature | - | ~230 °C (ferromagnetic below) |
| Electrical Resistivity (20 °C) | - | ~0.78 µΩ·m |
| Specific Heat (20 °C) | - | 515 J/(kg·K) |
| Thermal Conductivity (20 °C) | - | ~11 W/(m·K) |
| CTE 20 – 100 °C | - | ≤ 1.0 × 10⁻⁶ / °C |
| CTE 20 – 200 °C | - | ≤ 2.0 × 10⁻⁶ / °C |
| CTE 20 – 300 °C | - | ≤ 5.0 × 10⁻⁶ / °C |
| CTE 20 – 400 °C | - | ≤ 8.0 × 10⁻⁶ / °C |
| CTE 20 – 500 °C | - | ≤ 10.0 × 10⁻⁶ / °C |
Applications
- precision components
- measuring equipment
- electronic assemblies
- specialized industrial tooling