What it is
Some wounds need strong closure. Sternum after heart surgery. Tendon repair. Bone fragment fixation. Nylon breaks. Absorbable dissolves too fast. Steel has nickel.
Medical grade titanium wire for surgical sutures is the alternative. Stronger than absorbable. Thinner than steel for the same strength. No nickel. No corrosion. Stays in the body forever with no reaction.
Sternal closure. Tendon repair. Cerclage. Ligament reconstruction. Any surgery that needs a permanent, strong suture.
Titanium vs other suture materials
| Material | Tensile strength | Nickel | Permanent | Biocompatible |
| Titanium wire | 240-860 MPa | 0% | Yes | Excellent |
| Stainless steel wire | 480-620 MPa | 10-14% | Yes | Fair |
| Nylon | 70-100 MPa | 0% | Yes | Good |
| PDS (absorbable) | 50-80 MPa | 0% | No | Good |
| Silk | 50-70 MPa | 0% | Yes (degrades) | Fair |
For medical grade titanium wire for surgical sutures, the advantages are clear. Stronger than any polymer. No nickel. Permanent. Body accepts it.
Which grade for surgical sutures
| Grade | Material | Tensile | Best for |
| Grade 1 CP | Pure titanium | 240 MPa | Soft tissue, tendon repair |
| Grade 23 ELI | Ti-6Al-4V | 860 MPa | Sternal closure, heavy load |
Grade 1 is softer. More flexible. Easier to tie. Used for tendon repairs and soft tissue where the load is lower.
Grade 23 ELI is stronger. Used for sternal wires and bone cerclage where high tensile is required.
For medical grade titanium wire for surgical sutures, Grade 1 covers most soft tissue. Grade 23 ELI for high-stress applications.
Material specifications
Grade 1 CP (ASTM F67)
| Property | Value |
| Tensile (min) | 240 MPa |
| Yield (min) | 170 MPa |
| Elongation | ≥ 24% |
| Density | 4.51 g/cm³ |
| Flexibility | Excellent |
Grade 23 ELI (ASTM F136)
| Property | Value |
| Tensile (min) | 860 MPa |
| Yield (min) | 795 MPa |
| Elongation | ≥ 10% |
| Density | 4.43 g/cm³ |
| Flexibility | Moderate |
Chemical limits - pure titanium (Grade 1, ASTM F67)
| Element | Max limit |
| Oxygen | 0.18% |
| Iron | 0.20% |
| Carbon | 0.08% |
| Nitrogen | 0.03% |
| Hydrogen | 0.012% |
| Titanium | ≥99.5% |
No nickel. No vanadium. No aluminum. Just pure titanium.
Common diameters for surgical sutures
Diameter (mm) | US gauge (approx) | Application |
| 0.1 – 0.2 | 34-32 | Microsurgery, tendon repair (hand) |
| 0.2 – 0.3 | 32-30 | Fine tendon, ligament |
| 0.3 – 0.4 | 30-28 | Tendon repair (foot, wrist) |
| 0.4 – 0.5 | 28-26 | Soft tissue, general closure |
| 0.5 – 0.6 | 26-24 | Sternal closure (pediatric) |
| 0.6 – 0.8 | 24-22 | Sternal closure (adult) |
Where it goes
Sternal closure. Open heart surgery. Sternum split down the middle. Wires pass around the bone. Twist tight. Close the chest. 0.6mm to 0.8mm diameter. Grade 23 ELI. Strong enough to hold the rib cage together.
Tendon repair. Flexor tendon in hand. Extensor tendon in wrist. Wire passes through the tendon. Pulls the ends together. Thin diameter. 0.1mm to 0.2mm. Grade 1. Flexible enough to tie.
Cerclage fixation. Wrapping wire around bone fragments. Trochanteric fractures. 0.5mm to 0.8mm. Grade 23 ELI.
Ligament reconstruction. Artificial ligament fixation. Wire anchors the graft. 0.3mm to 0.5mm. Grade 1 or Grade 23 ELI.
For medical grade titanium wire for surgical sutures, each application needs specific diameter and grade.
Why titanium for sternal wires
Sternal wires stay in the chest forever. Patient may need MRI later. Steel wires cause artifact. Titanium wires don't.
Steel has nickel. Some patients react. Titanium has none.
Titanium is lighter. But weight doesn't matter inside the chest. The MRI compatibility and nickel-free are the real advantages.
For medical grade titanium wire for surgical sutures in sternal closure, Grade 23 ELI is the standard. 0.6mm to 0.8mm. Polished surface.
Why titanium for tendon repair
Tendon repair needs thin, strong suture. Nylon works but has low strength-to-diameter ratio.
Titanium wire is thinner for the same strength. Less bulk inside the tendon. Better gliding. Less adhesion.
| Suture type | Diameter for 50N strength | Bulk |
| Titanium wire (Grade 1) | 0.2mm | Very low |
| Nylon | 0.4mm | Moderate |
| Stainless steel | 0.2mm | Low (but nickel) |
For fine hand surgery, thin is better. Medical grade titanium wire for surgical sutures in 0.1mm to 0.2mm diameter is common.
Knot tying with titanium wire
Titanium wire ties differently than nylon or silk. It doesn't stretch. It holds the knot.
| Technique | Recommendation |
| First throw | Square knot |
| Second throw | Surgeon's knot |
| Additional throws | 3-4 total |
| Cut ends | 2-3mm length |
Grade 1 titanium is easier to tie than Grade 23 ELI. Grade 1 is softer. Grade 23 ELI is springier. Practice required.
For medical grade titanium wire for surgical sutures, we recommend Grade 1 for surgeons who do a lot of hand tying.
Sternal wire technique
Pass wire around sternum using a curved needle or passer. Both ends come out. Twist using a wire twister. 3-4 twists. Cut ends. Push twist flat against bone.
Wire must not break during twisting. Must not loosen after cutting.
| Test | Requirement |
| Twist test | 10 twists, no cracks |
| Tensile after twist | >80% of original |
Our wire passes both.
Surface finish for sutures
Suture wire passes through tissue. Rough wire causes trauma. Increases bleeding. Slows healing.
| Finish | Ra | Best for |
| Polished | ≤ 0.1μm | Standard surgical suture |
| Electropolished | ≤ 0.05μm | Microsurgery, tendon |
For medical grade titanium wire for surgical sutures, polished is standard. Electropolished for ultra-smooth surface.
Straight vs coil packaging
Sternal wires are usually straight lengths. 300mm to 500mm. Packed in sterile pouches or tubes.
Tendon repair wires often come in coils. Surgeon cuts desired length. Coils allow longer continuous wire.
For medical grade titanium wire for surgical sutures, we supply both. Tell us your preference.
Sterilization
Surgical sutures must be sterile. We supply non-sterile or sterile.
| Option | Method |
| Non-sterile | Hospital sterilizes (autoclave, EtO) |
| Sterile | Gamma irradiation, double-pouched |
Sterile wire is ready for OR. No hospital processing. Higher cost.
Traceability
Surgical sutures are medical devices. Class II. Full traceability required.
Every medical grade titanium wire for surgical sutures comes with:
| Document | Provided |
| Heat number | Yes |
| Mill test report | Yes |
| ASTM F67 or F136 cert | Yes |
| Chemical analysis | Yes |
| Mechanical test results | Yes |
| Diameter certification | Yes |
EN 10204 3.1 standard. 3.2 available.
FAQ
Q: Grade 1 or Grade 23 ELI for sternal wires?
A: Grade 23 ELI. Sternal closure needs high strength. 860 MPa vs 240 MPa. Grade 1 is too weak for adult sternum.
Q: What diameter for adult sternal closure?
A: 0.6mm to 0.8mm. 0.8mm for larger patients. 0.6mm for smaller.
Q: Grade 1 or Grade 23 ELI for tendon repair?
A: Grade 1. Softer. Easier to tie. Tendon loads are lower. Grade 1's 240 MPa is enough for hand tendons.
Q: What diameter for flexor tendon repair?
A: 0.1mm to 0.2mm. Thin wire. Less bulk in the tendon sheath.
Q: Polished or electropolished for microsurgery?
A: Electropolished. Ra ≤ 0.05μm. Smoother surface. Less tissue drag.
Q: Can you supply pre-cut sterile lengths for sternal wires?
A: Yes. Cut to 300mm, 350mm, 400mm. Double-pouched. Gamma sterilized. Ready for OR.
Q: Lead time?
A:
| Order type | Lead time |
| Stock diameters (0.1mm – 0.8mm) | 7-10 days |
| Non-stock sizes | 3-5 weeks |
| Sterile packaging | Add 1 week |
Q: Sample wire for evaluation?
A: Yes. 1 meter sample. Pay shipping. Material free for evaluation. Credit back on first production order over $10,000.
Q: Packaging for clean room?
A: Straight lengths in sealed tubes. Coils on spools in anti-static bags. Labels show material, diameter, length, heat number, ASTM spec.
The bottom line
Surgical sutures need strength. Permanent fixation. No allergic reactions.
Medical grade titanium wire for surgical sutures delivers that.
| Feature | Benefit |
| Grade 1 CP | Soft, tieable, for tendon |
| Grade 23 ELI | High strength, for sternum |
| No nickel | No allergic reactions |
| Polished surface | Smooth tissue passage |
| Full traceability | Audit ready |
For sternal closure. For tendon repair. For cerclage. For ligament reconstruction.
Stronger than nylon. Safer than steel. Permanent. Biocompatible.
Contact
Need a quote on medical grade titanium wire for surgical sutures? Tell us grade (Grade 1 or Grade 23 ELI), diameter, length (straight or coil), quantity, and any packaging requirements (sterile or non-sterile). We'll reply within 24 hours.
Email: shawn@mt-titanium.com
WhatsApp: +86-18220745501
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