Product Definition

Engineered for Critical Magnetic Circuits

Precision-manufactured Ø150mm (±0.15mm) pure iron rods with controlled crystallographic orientation, designed specifically for high-efficiency electromagnets in scientific equipment, MRI systems, and particle accelerators. Certified to exceed IEEE Std 287 magnetic requirements.

Key Performance Indicators

Parameter	Our Spec	Industry Standard	Test Method
Max. Permeability (μ)	190,000-220,000 H/m	150,000 H/m	JIS C 2505 Method B
Coercivity (Hc)	0.035-0.048 Oe	0.08 Oe	ASTM A341
Roundness	≤0.05mm	≤0.10mm	ISO 4291
Straightness	≤0.3mm/m	≤0.5mm/m	DIN 7184
Residual Stress	<15 MPa	<50 MPa	X-ray diffraction

Core Technology Advantages

Magnetic Performance Engineered

- Texture Control:

{100}<0vw> cubic texture achieved through cross-rolling → 18% higher μ vs. conventional rods

- Domain Refinement:

Hydrogen annealing at 920°C reduces wall energy → Hc ≤0.04 Oe

- Consistency Protocol:

BH curve deviation ≤±3% along 6m length (tested per IEC 60404-4)

Precision Manufacturing

Process	Technology	Result
Centerless Grinding	CNC profile correction	Ra ≤0.4μm (EMC-critical)
End-Facing	Diamond-tool machining	Perpendicularity ≤0.02°
Stress Relief	650°C/8hr in H₂ atmosphere	Eliminates cutting strains

Composition & Purity

Element	Target Range	Impact on EM Performance
Fe	99.97% min.	Base permeability
C	≤0.003%	Reduces hysteresis loss
Si	≤0.01%	Minimizes eddy currents
O₂	≤25 ppm	Prevents aging drift
Mn	≤0.015%	Avoids magnetic anisotropy