Comprehensive Non Magnetic Tool Kit featuring titanium tools suitable for engineering where magnetic interference must be avoided

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.

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.

Jovvi’s production process ensures that ≥90% of each tool’s mass is titanium, not just the visible parts.

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.