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| Customization: | Available |
|---|---|
| Type: | Wire |
| Standard: | AISI, ASTM, DIN, JIS, GB, BS |
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| Category | Details |
|---|---|
| Alloy Names | 3J21, 3J22, 3J40 |
| Standard | GB/T 15061-1994 (or equivalent) |
| Type | Elastic Precision Alloys |
| Element | 3J21 | 3J22 | 3J40 |
|---|---|---|---|
| Nickel (Ni) | 38% - 40% | 45% - 47% | 40% - 42% |
| Iron (Fe) | Balance | Balance | Balance |
| Chromium (Cr) | 11% - 13% | 12% - 14% | 6% - 8% |
| Manganese (Mn) | ≤ 0.8% | ≤ 0.8% | ≤ 0.8% |
| Titanium (Ti) | ≤ 1.5% | ≤ 1.5% | 1.0% - 2.0% |
| Silicon (Si) | ≤ 0.5% | ≤ 0.5% | ≤ 0.5% |
| Carbon (C) | ≤ 0.05% | ≤ 0.05% | ≤ 0.05% |
| Sulfur (S) | ≤ 0.02% | ≤ 0.02% | ≤ 0.02% |
| Property | 3J21 | 3J22 | 3J40 |
|---|---|---|---|
| Density (g/cm³) | ~8.0 | ~8.2 | ~8.1 |
| Elastic Modulus (GPa) | ~200 | ~210 | ~195 |
| Thermal Expansion Coefficient | Moderate | Low | Moderate |
| Temperature Stability | Up to 350°C | Up to 400°C | Up to 300°C |
| Property | 3J21 | 3J22 | 3J40 |
|---|---|---|---|
| Tensile Strength (MPa) | ≥ 1200 | ≥ 1100 | ≥ 1000 |
| Yield Strength (MPa) | ≥ 950 | ≥ 900 | ≥ 850 |
| Elongation (%) | ≥ 8 | ≥ 10 | ≥ 12 |
| Fatigue Resistance | Excellent | Excellent | Very Good |
| Alloy | Applications |
|---|---|
| 3J21 | Precision elastic components for aerospace, high-performance springs, and measuring instruments. |
| 3J22 | Springs and elastic components in high-temperature and high-stress environments, including aviation. |
| 3J40 | Elastic components for electronics, relays, and devices requiring moderate elastic precision. |
Precision alloys are special metal alloys designed to exhibit unique and highly controlled properties, such as precise magnetic performance, thermal stability, electrical resistivity, or thermal expansion characteristics. They are commonly used in high-performance applications across industries like aerospace, electronics, and instrumentation.
Key properties include:
Precision alloys are used in:
Precision alloys are typically manufactured through a series of processes including:
Heat treatments play a crucial role in determining the final properties of precision alloys. For example:
Many precision alloys are designed with recyclability in mind. Alloys like Invar and permalloy can often be recycled without significant loss of their unique properties, reducing environmental impact.
Yes, precision alloys can be customized through adjustments in composition and processing to meet specific performance requirements. Custom solutions are often provided for industries like aerospace and medical devices.
Precision alloys often comply with standards such as:
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