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Product Overview
Titanium Grade 4 washers are high-strength, commercially pure titanium fastener components manufactured from UNS R50700 material, conforming to ASTM B265 and ASTM F67 standards. Grade 4 is the strongest of the commercially pure titanium grades, offering superior mechanical properties and excellent corrosion resistance in oxidizing and chloride-rich environments.
These washers are widely specified for critical bolted joints in chemical processing, marine, medical, and aerospace applications where both high strength and biocompatibility are required. Titanium Grade 4 washers are non-magnetic, lightweight, and maintain their integrity in aggressive environments where stainless steel or lower grades of titanium may fail.
| Material | Titanium Grade 4 |
| UNS Number | R50700 |
| DIN Number | 3.7065 |
| Material Standard | ASTM B265 / ASTM F67 |
| Washer Standard (Metric) | DIN 125 / DIN 127 / ISO 7089 |
| Washer Standard (Inch) | ASME B18.22.1 |
| Type | Flat, Spring, Lock, Tab, Fender |
| Diameter Range | M3-M64 / 1/8"-2.5" |
| Tensile Strength | 550 MPa (80 ksi) min |
| Yield Strength | 483 MPa (70 ksi) min |
| Hardness | Max 230 HV |
Complete the Fastener Set
Technical Data
| Size (M) | Inner Ø (mm) | Outer Ø (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 7090 | Chamfered washers | Metric |
| Material Standard | Requirement |
|---|---|
| ASTM B265 | Plate/strip - UNS R50700 |
| ASTM F67 | Unalloyed titanium fasteners |
| ISO 5832-2 | Surgical implant grade |
| EN 10204 3.1 | Mill test certificate |
| EN 10204 3.2 | TPI-witnessed MTC |
Material Chemistry
| Element | Composition (%) |
|---|---|
| Titanium (Ti) | Balance |
| Oxygen (O) | 0.40% max |
| Iron (Fe) | 0.50% max |
| Carbon (C) | 0.08% max |
| Nitrogen (N) | 0.05% max |
| Hydrogen (H) | 0.015% max |
| Other Elements (each) | 0.10% max |
| Other Elements (total) | 0.40% max |
Fastener Performance
| Washer Size | Recommended Bolt Size | Max Load (kN) |
|---|---|---|
| M6 | M6 | 13 |
| M10 | M10 | 29 |
| M16 | M16 | 62 |
| M20 | M20 | 97 |
| M24 | M24 | 140 |
| M30 | M30 | 220 |
| M36 | M36 | 320 |
Industry Applications
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