Jovvi international
| Payment Terms | T/T |
| Place Of Origin | China |
| Density | 4.4 g/cm³ |
| Material composition | ≥90% Titanium |
| Delivery Time | 7-14days |
| Tensile strength | 950-1100 MPa |
| Packaging Details | Carton&wooden Box |
| Magnetic susceptibility | < 5 × 10⁻⁶ |
| Handle material | Ergonomic Plastic Or Rubber |
| Supply Ability | 300 Set / Month |
| Surface hardness | 36 HRC |
| Model Number | 1-cf-7 |
| Brand Name | Jovi |
| Certification | ISO9001 |
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Product Specification
| Payment Terms | T/T | Place Of Origin | China |
| Density | 4.4 g/cm³ | Material composition | ≥90% Titanium |
| Delivery Time | 7-14days | Tensile strength | 950-1100 MPa |
| Packaging Details | Carton&wooden Box | Magnetic susceptibility | < 5 × 10⁻⁶ |
| Handle material | Ergonomic Plastic Or Rubber | Supply Ability | 300 Set / Month |
| Surface hardness | 36 HRC | Model Number | 1-cf-7 |
| Brand Name | Jovi | Certification | ISO9001 |
Not all “non‑magnetic” tools are equal. The key metric for MRI safety is magnetic susceptibility (χ) – how strongly a material becomes magnetized in an external magnetic field.
| Material | Magnetic Susceptibility (χ, SI units) | Artifact Size at 3T (approx.) | MRI Suitability |
|---|---|---|---|
| Titanium (Grade 5, Ti‑6Al‑4V) | < 5 × 10⁻⁶ | < 1 mm | Ideal |
| Beryllium copper | < 1 × 10⁻⁵ | 1–2 mm | Acceptable |
| Brass (Cu‑Zn) | ~ 0 (diamagnetic) | < 1 mm | Good, but weak |
| 300 series stainless (316, 304) | ~ 10⁻³ (field‑dependent) | 5–20 mm | Poor – artifacts likely |
| Aluminum | ~ 2 × 10⁻⁵ | 2–5 mm | Acceptable (too soft for tools) |
| Ferrous steel | > 10² | > 100 mm | Dangerous – projectile |
Jovvi guarantee: All titanium tools have χ < 5 × 10⁻⁶, verified by SQUID magnetometer testing per ASTM F3042.
Task: Tightening a 3 mm set screw on a receive coil housing, 20 cm from isocenter.
With 316 stainless wrench: Field distortion at coil level → image artifact diameter up to 15 mm, potentially obscuring pathology. Also, torque feels inconsistent due to magnetic drag.
With Jovvi titanium wrench: No artifact. No magnetic drag. Screw torque is accurate.
With brass wrench: No artifact, but brass is soft – wrench jaws may deform after 50 uses.
Jovvi solution: Titanium hex keys (100% Ti) – hard enough for repeated use, completely artifact‑free.
Task: Removing a 14 mm hex nut from the helium fill port. The tool must not become magnetized, because any magnetized tool near the cryostat can disturb field homogeneity.
Risk with stainless tools: 300 series stainless becomes weakly ferromagnetic after cold working (bending, machining). A previously “non‑magnetic” stainless wrench may attract to the magnet after 6 months of shop use.
Titanium advantage: Titanium does not work‑harden to a ferromagnetic state. Its magnetic susceptibility remains stable for the life of the tool.
Jovvi guarantee: Lifetime magnetic stability – no ferromagnetic transformation under any mechanical or thermal stress.
Task: Hammering copper fasteners into plywood backing. The hammer head must be non‑magnetic and non‑sparking.
Brass hammer: Non‑sparking, but density low (8.4 g/cm³) – requires heavy head for same impact. Brass also deforms quickly.
Titanium hammer: Density 4.4 g/cm³ – lighter, but Jovvi compensates with larger head volume. Surface hardness (36 HRC) much higher than brass – no deformation.
Jovvi solution: 100% titanium hammer head with replaceable face inserts.
| Tool | Standard Non‑Magnetic Alternatives | Problem with Alternatives | Jovvi Titanium (≥90%) Benefit |
|---|---|---|---|
| Hex keys | Brass, beryllium copper | Brass strips easily; Be‑Cu expensive | Ti hardness = steel‑like, no stripping |
| Screwdrivers | 316 stainless, ceramic | 316 causes minor artifacts; ceramic brittle | Ti blade + brass handle – best of both |
| Pliers | Bronze, aluminum bronze | Bronze heavy; aluminum too soft | Ti jaws with bronze pivot – light & strong |
| Wrenches | 316 stainless, aluminum | 316 artifacts; aluminum strips threads | Ti – no artifacts, full torque capacity |
| Hammer | Brass, bronze, lead‑filled plastic | Brass dents; plastic too light | Ti head – durable, non‑sparking, MRI‑safe |
| Tweezers | Ceramic, plastic, brass | Ceramic breaks; plastic melts if autoclaved | Ti – strong, autoclavable, non‑magnetic |
Jovvi’s production process ensures that ≥90% of each tool’s mass is titanium, not just the visible parts.
| Component | Cheap Competitor Practice | Jovvi Practice |
|---|---|---|
| Screwdriver internal shank | Steel core with Ti coating | Solid Ti‑6Al‑4V shank |
| Pliers pivot pin | Steel pin, nickel plated | Bronze or Ti pin |
| Ratchet spring | Steel music wire | Beryllium copper spring |
| Hammer handle | Steel tube with rubber grip | Fiberglass or solid Ti |
| Hex key set | Steel with TiN (titanium nitride) coating – appears “titanium” | 100% Ti alloy, no coating needed |
Jovvi verification: Each tool is X‑ray inspected to confirm no internal ferromagnetic components. Material certificates are lot‑traceable.
Titanium tensile strength: 950–1100 MPa (comparable to 4140 steel)
Brass tensile strength: 300–500 MPa (too weak for high‑torque applications)
316 stainless: 500–700 MPa (strong, but magnetic susceptibility 1000× higher than Ti)
Jovvi titanium tools are rated for 100% of the torque specified for equivalent steel tools – unlike brass or aluminum alternatives that must be derated.
Company Details
Year Established:
2010
Total Annual:
10000000-20000000
Employee Number:
100~500
Ecer Certification：
Verified Supplier
Jovvi(Beijing Hengtai Tech Co., Ltd) was established in 2010. The company adheres to the development concept of “integrity all over the world and conducts all continents”, adheres to the business policy of “strive to create greater value for customers”, and is committed... Jovvi(Beijing Hengtai Tech Co., Ltd) was established in 2010. The company adheres to the development concept of “integrity all over the world and conducts all continents”, adheres to the business policy of “strive to create greater value for customers”, and is committed...
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