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Product Overview
Titanium Grade 5 (Ti-6Al-4V) washers are high-performance fastener components manufactured from the most widely used titanium alloy, UNS R56400, conforming to ASTM B348 and ASTM F136. This alpha-beta alloy contains 6% aluminium and 4% vanadium, providing an exceptional combination of strength, low density, and outstanding corrosion resistance in both oxidizing and chloride-rich environments.
Grade 5 titanium washers are specified for critical bolted joints in aerospace, offshore, chemical, and medical applications where weight reduction, high fatigue strength, and non-magnetic properties are essential. They are available in flat, spring, and custom geometries, and are suitable for use with both titanium and dissimilar alloy fasteners.
| Material | Titanium Grade 5 (Ti-6Al-4V) |
| UNS Number | R56400 |
| DIN Number | 3.7165 |
| Material Standard | ASTM B348 / ASTM F136 |
| Washer Standard (Metric) | DIN 125 / DIN 127 / ISO 7089 |
| Washer Standard (Inch) | ASME B18.22.1 |
| Type | Flat, Spring, Belleville, Tab, Custom |
| Size Range | M3-M64 / 1/8"-2½" |
| Tensile Strength | 895 MPa (130 ksi) min |
| Yield Strength | 828 MPa (120 ksi) min |
| Hardness | Max 36 HRC / 349 HV |
Complete the Fastener Set
Technical Data
| Size (M) | Inner Dia (mm) | Outer Dia (mm) | Thickness (mm) |
|---|---|---|---|
| M3 | 3.2 | 7 | 0.5 |
| M6 | 6.4 | 12 | 1.6 |
| M8 | 8.4 | 16 | 1.6 |
| M10 | 10.5 | 20 | 2.0 |
| M12 | 13.0 | 24 | 2.5 |
| M16 | 17.0 | 30 | 3.0 |
| M20 | 21.0 | 37 | 3.0 |
| M24 | 25.0 | 44 | 4.0 |
| M30 | 31.0 | 56 | 4.0 |
| M36 | 37.0 | 66 | 5.0 |
| M42 | 43.0 | 78 | 6.0 |
| M48 | 49.0 | 92 | 6.0 |
| M56 | 57.0 | 105 | 8.0 |
| M64 | 65.0 | 115 | 8.0 |
| Standard | Covers | Type |
|---|---|---|
| DIN 125 | Flat washers | Metric |
| DIN 127 | Spring lock washers | Metric |
| ISO 7089 | Plain washers | Metric |
| ASME B18.22.1 | Plain & lock washers | Inch |
| ISO 8738 | Tab washers | Metric |
| Material Standard | Requirement |
|---|---|
| ASTM B348 | Bar/rod/plate - Ti-6Al-4V |
| ASTM F136 | Medical implant grade |
| AMS 4928 | Aerospace bar/forgings |
| EN 10204 3.1 | Mill test certificate |
| EN 10204 3.2 | TPI-witnessed MTC |
Material Chemistry
| Element | Composition (%) |
|---|---|
| Titanium (Ti) | Balance |
| Aluminium (Al) | 5.5-6.75 |
| Vanadium (V) | 3.5-4.5 |
| Iron (Fe) | 0.40 max |
| Oxygen (O) | 0.20 max |
| Carbon (C) | 0.08 max |
| Nitrogen (N) | 0.05 max |
| Hydrogen (H) | 0.015 max |
| Other Elements | 0.40 max (each 0.10) |
Fastener Performance
| Bolt Size | Recommended Washer OD (mm) | Recommended Thickness (mm) |
|---|---|---|
| M6 | 12 | 1.6 |
| M8 | 16 | 1.6 |
| M10 | 20 | 2.0 |
| M12 | 24 | 2.5 |
| M16 | 30 | 3.0 |
| M20 | 37 | 3.0 |
| M24 | 44 | 4.0 |
| M30 | 56 | 4.0 |
Industry Applications
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