Grade 5 titanium vs 904L stainless steel: Key differences
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If you are looking for high-performance materials with excellent strength, corrosion resistance, and high-temperature performance, you may be considering Grade 5 Titanium and 904L Stainless Steel. Both materials are widely used in demanding industries such as aerospace, medical devices, chemical processing, and marine engineering. However, they have distinct properties that make them suitable for different applications. This article will provide a detailed comparison of Grade 5 Titanium (Ti-6Al-4V) and 904L Stainless Steel, covering their key differences, advantages, and recommendations for procurement.
What is Grade 5 Titanium Alloy (Ti-6Al-4V)?
Grade 5 titanium alloy, also known as Ti-6Al-4V, is the most widely used titanium alloy, composed of approximately 90% titanium, 6% aluminum, and 4% vanadium. Grade 5 titanium alloy is high in strength and relatively lightweight, making it ideal for applications with stringent weight requirements. This alloy performs well at high temperatures, withstanding temperatures up to 500°C (932°F), making it suitable for high-temperature applications as well.
Typical Applications:
Aerospace (aircraft structures, engine components)
Medical Devices (orthopedic implants, dental implants)
High-Performance Engines (turbine blades, exhaust systems)
What is 904L Stainless Steel?
904L stainless steel is an austenitic stainless steel containing high concentrations of chromium, nickel, and copper. It is known for its excellent corrosion resistance, especially in environments with high concentrations of acids and chlorides. This material has excellent weldability and formability, and is easily machined into various shapes and sizes. While not as strong as Grade 5 titanium, 904L stainless steel still possesses considerable strength and resistance to stress and compression.
Typical applications:
Chemical equipment (reactors, heat exchangers, piping)
Marine engineering (seawater cooling systems, offshore equipment)
Food and beverage processing (storage tanks, conveyors)
Pharmaceutical equipment (reactors, filters)
Chemical Composition : Grade 5 Titanium vs 904L Stainless Steel
| Element | Grade 5 Titanium (Ti-6Al-4V) | 904L Stainless Steel |
|---|---|---|
| Titanium (Ti) | 90.0% (min) | Not present |
| Aluminum (Al) | 6.0% (min) | Not present |
| Vanadium (V) | 4.0% (min) | Not present |
| Chromium (Cr) | Not present | 19.0-23.0% |
| Nickel (Ni) | Not present | 23.0-28.0% |
| Copper (Cu) | Not present | 4.0-5.0% |
| Manganese (Mn) | 0.3% (max) | 2.0% (max) |
| Silicon (Si) | 1.0% (max) | 1.0% (max) |
| Iron (Fe) | 0.3% (max) | Balance |
Grade 5 Titanium vs 904L Stainless Steel：Mechanical Properties
| Property | Grade 5 Titanium (Ti-6Al-4V) | 904L Stainless Steel |
|---|---|---|
| Tensile Strength | 900-1,100 MPa | 520-720 MPa |
| Yield Strength | 830 MPa | 240 MPa |
| Elongation at Break | 10-15% | 40-50% |
| Hardness (HRB) | 35-45 | 90-95 |
| Modulus of Elasticity | 110 GPa | 193 GPa |
Grade 5 Titanium Alloy vs. 904L Stainless Steel: Corrosion Resistance
Grade 5 titanium alloys typically exhibit excellent corrosion resistance, especially in saltwater and chloride environments, as they form a nearly completely impermeable and self-healing titanium dioxide protective layer. While 904L stainless steel also possesses good corrosion resistance, its protective layer is easily damaged by chlorides, leading to pitting and crevice corrosion.
Grade 5 Titanium Alloy vs. 904L Stainless Steel: Abrasion Resistance
Compared to 904L stainless steel, Grade 5 titanium alloys generally exhibit superior abrasion resistance, particularly due to their higher hardness and tensile strength. While 904L stainless steel offers good abrasion resistance, Grade 5 titanium alloys are harder and more resistant to scratches and deformation.
Grade 5 titanium vs 316l stainless steel ：hardness
Grade 5 titanium has a higher hardness rating than 316L stainless steel, with a typical maximum hardness of up to 36 HRC compared to 316L's Brinell hardness of 217 (or ~95 on the Rockwell B scale). While titanium is stronger in terms of tensile strength-to-weight ratio, 316L stainless steel is harder to scratch and can achieve a higher-luster finish.
904L stainless steel price per kg vs Grade 5 Titanium
904L Stainless Steel: Prices typically range from $3.50 to $5.00 per kilogram, depending on thickness, width, and surface finish.
Grade 5 Titanium (Ti-6Al-4V): Prices typically range from $40.00 to $60.00 per kilogram. Grade 5 titanium is more expensive than stainless steel, making it ideal for aerospace, medical, and marine applications where lightweighting and strength are paramount.
Gnee Steel offers premium 904L stainless steel and Grade 5 titanium products, including sheets, coils, tubes, and bars that meet international quality standards. All our materials are ISO, SGS, and BV certified. With over 18 years of industry experience, we ensure on-time delivery for all orders. Standard orders typically ship within 7-15 days, while custom orders have a processing time of 30 days.
