Gr1 ERTi Titanium Wire

Gr1 ERTi-1 titanium wire is a commercially pure titanium filler metal conforming to AWS A5.16 / ASME SFA-5.16 classification ERTi-1. As the highest purity grade of titanium welding wire, ERTi-1 contains the lowest levels of interstitial elements (oxygen, nitrogen, hydrogen), offering maximum ductility, exceptional corrosion resistance, and excellent weldability.

 

Maximum Ductility:
Highest elongation among titanium filler metals – produces flexible, formable welds

Exceptional Corrosion Resistance:
Superior performance in seawater, chlorides, oxidizing acids, and industrial chemicals

Lowest Interstitial Content:
Controlled low oxygen (≤0.18%), nitrogen (≤0.03%), and hydrogen (≤0.015%) for optimal weld quality

Excellent Weldability:
Smooth arc characteristics, excellent wetting, minimal spatter, and good bead appearance

Oxide Self-Healing:
Spontaneously forms protective TiO₂ layer when exposed to oxygen or moisture

 

Element	AWS A5.16 ERTi-1 Requirement	ASTM B863 Grade 1	Typical Value
Titanium (Ti)	Balance	Balance	Balance
Nitrogen (N)	≤ 0.03	≤ 0.03	≤ 0.015
Carbon (C)	≤ 0.08	≤ 0.08	≤ 0.04
Hydrogen (H)	≤ 0.015	≤ 0.015	≤ 0.006
Iron (Fe)	≤ 0.20	≤ 0.20	≤ 0.12
Oxygen (O)	≤ 0.18	≤ 0.18	≤ 0.14
Others (Each)	≤ 0.10	≤ 0.10	< 0.05
Others (Total)	≤ 0.40	≤ 0.40	< 0.20

 

Property	Value
Density	4.51 g/cm³ (0.163 lb/in³)
Melting Point	1660-1700°C (3020-3092°F)
Beta Transus Temperature	890-920°C (1634-1688°F)
Thermal Conductivity	16.4 W/m·K at 20°C
Electrical Resistivity	0.56 μΩ·m at 20°C
Modulus of Elasticity	105 GPa (15.2 × 10⁶ psi)
Poisson's Ratio	0.34
Coefficient of Thermal Expansion	8.6 µm/m·°C (20-100°C)
Magnetic Properties	Non-magnetic
Specific Heat	0.523 J/g·°C

 

Property	AWS ERTi-1 Requirement	Typical Annealed Value
Tensile Strength (MPa)	≥ 240	300 – 380
Yield Strength (MPa) (0.2% offset)	≥ 170	200 – 260
Elongation (%)	≥ 24	28 – 38
Reduction of Area (%)	≥ 30	40 – 55
Hardness (HV)	-	120 – 150
Hardness (HRB)	-	70 – 80
Modulus of Elasticity (GPa)	-	105

 

Surface Type	Description	Roughness (Ra)	Application
Pickled	Acid pickled, oxide-free, uniform matte finish	0.4-0.8 µm	Standard welding wire
Cleaned	Chemically cleaned, light oxide removal	0.3-0.6 µm	General fabrication
Bright Annealed	Vacuum annealed, bright metallic surface	0.2-0.4 µm	Critical applications
Polished	Mechanically polished	0.1-0.3 µm	Aesthetic requirements

 

Base Metal	Suitability	Notes
Grade 1 Titanium	Excellent	Recommended filler – matches properties
Grade 2 Titanium	Good	Weld will have lower strength than base metal
Grade 3 Titanium	Limited	Weld will be under-matched in strength
Grade 4 Titanium	Not Recommended	Significant strength under-match
Grade 1-4 Clad Steel	Excellent	CP titanium cladding layers

 

Our factory is a state-of-the-art titanium wire production facility spanning 12,000 square meters, equipped with 16 precision wire drawing lines, vacuum annealing furnaces, and ultrasonic cleaning systems to ensure superior surface quality and dimensional accuracy. We operate under ISO 9001:2015 and AS9100D certifications, with an annual production capacity exceeding 500 tons of titanium and titanium alloy wire across Grades 1, 2, 5, 7, 12, and 23. Our in-house metallurgical laboratory performs 100% traceability testing including chemical analysis (OES), mechanical testing, and hydrogen content verification, ensuring every spool meets AWS, ASTM, and AMS specifications. From R&D quantities to bulk production, we deliver precision-wound spools, straight lengths, and custom-packaged wire to clients worldwide in chemical processing, marine, medical, and industrial applications.

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