In the industry and advanced manufacturing, the selection of grade of titanium material directly affects the project cost, performance and life. GR1 and GR2 are commercial pure titanium (CP Titanium), Ti6Al4V (GR5) is an alpha+beta titanium alloy. The three indeed differ significantly in terms of formulation enabling crush strength, resilience over time and processing capabilities as well as market positioning. The following provides a detailed analysis from four aspects: core parameters, performance characteristics, application scenarios, and market trends to assist in precise material selection.
Core components and mechanical properties (ASTM B265)
Grade | Type | Main Composition | Tensile Strength | Yield Strength | Elongation | Density |
GR1 | CP Titanium | Ti≥99.6%,Fe≤0.20%,O≤0.18% | 240–370 MPa | 170–270 MPa | ≥24% | 4.51 g/cm³ |
GR2 | CP Titanium | Ti≥99.5%,Fe≤0.30%,O≤0.25% | 345–480 MPa | 275–345 MPa | ≥20% | 4.51 g/cm³ |
Ti6Al4V(GR5) | α+β Alloy | Ti+6%Al+4%V,Fe≤0.25%,O≤0.20% | 930–1100 MPa | 860–960 MPa | ≥12% | 4.43 g/cm³ |
Performance characteristics and core differences
1. GR1 (TA1): High plasticity pure titanium
Characteristics: Pure titanium has the highest purity, the best plasticity, the softest, and slightly better corrosion resistance than GR2, especially suitable for strong corrosive environments; Excellent cold formability, capable of deep drawing, bending, and rolling, with excellent welding performance and no need for post weld heat treatment.
Limitations: Low strength, not suitable for high load structures; The price is slightly higher than GR2, with a market share of about 15%.
2. GR2 (TA2): Industrial mainstay pure titanium
Features: Commercial pure titanium with the best comprehensive performance, higher strength than GR1, balanced corrosion resistance, formability, and weldability, and the highest cost-effectiveness; Capable of withstanding moderate loads and stable long-term use, it is the preferred pure titanium grade for chemical, medical, and marine engineering.
Limitations: The strength is much lower than that of Ti6Al4V, and the strength decreases significantly at high temperatures (>300 ℃).
3. Ti6Al4V (GR5/TC4): High strength titanium alloy
Features: The most commonly used titanium alloy (accounting for 50% of global titanium usage), reinforced with Al and V elements, with a strength 2-3 times that of GR2, combining lightweight and high strength; Heat treatment strengthening, excellent fatigue performance, high temperature resistance (≤ 600 ℃), suitable for extreme working conditions.
Limitations: Corrosion resistance is slightly weaker than pure titanium, processing difficulty is high, cutting costs are high, and the price is 2-3 times that of GR2.
Accurate matching of application scenarios
GR1: Extreme corrosion resistance+easy to form scenarios, such as plate heat exchangers, chemical liners, electrolytic cells, medical ultra-thin foil materials, and deep-sea pipelines.
GR2: General industrial main scenarios, such as pharmaceutical/food hygiene grade pipelines, reaction vessels, seawater desalination equipment, medical implants (non load bearing), and building decoration.
Ti6Al4V: High strength+lightweight scenarios, such as aerospace structural components, engine parts, medical load-bearing implants (artificial joints, bone plates), high-end racing parts, high-pressure vessels.
Market Trends and Material Selection Suggestions (2026)
Price range (USD/kg): GR1:28-35; GR2：22–28; Ti6Al4V：50–80.
Supply situation: GR2 has the largest production capacity, sufficient stock, and short delivery time; GR1 focuses on niche customization; Ti6Al4V needs to be scheduled in advance, and high-end specifications rely on imports.
Material selection principle: GR1 is preferred for corrosion, GR2 is selected for general industrial use, and Ti6Al4V is selected for high-strength structures; Due to limited budget and average operating conditions, GR2 offers the best cost-effectiveness.
GR1, GR2, and Ti6Al4V represent the three major directions of high plasticity pure titanium, universal pure titanium, and high-strength titanium alloys, respectively, without absolute advantages or disadvantages, only suitable for different scenarios. GR1 is designed for maximum corrosion resistance and good formability, GR2 is a good balance between performance and price, and Ti6Al4V is a high-strength and lightweight alloy. Knowing the differences between the three can prevent over material selection or under performance to get the best cost performance.
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