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9 CR CoFeCr Soft Magnetic Alloy with high magnetic saturation and improved corrosion resistance
| Place of Origin | China |
|---|---|
| Brand Name | XUNSHI |
| Certification | ISO 9001:2015 |
| Model Number | 9 CR |
| Minimum Order Quantity | 300kg |
| Price | USD 50-60 per kg |
| Packaging Details | Carton, plywood crate |
| Delivery Time | 60 days |
| Payment Terms | T/T |
| Supply Ability | 10000 kg per month |
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xProduct Details
| Equal Grade | Vacoflux 9 CR, BYR15 | Form Of Supply | Wire Rod, Round Bar |
|---|---|---|---|
| Application | Actuator And Solenoid Valve | Spec | Xunshi Standard |
| Size Range | Diameters 12.5 – 100 Mm | ||
| Highlight | 9 CR CoFeCr Soft Magnetic Alloy |
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Product Description
9 CR soft magnetic alloy is a cost-optimized cobalt-iron-chromium alloy with a higher saturation magnetic induction and significantly improved corrosion resistance compared to other cobalt-iron alloys.
Due to the high resistivity and high magnetic saturation, 9 CR alloy has better switching times and higher actuation than conventional chrome steels.
With these unique properties, 9 CR alloy is suitable for components and actuators with special requirements for corrosion resistance, such as gasoline or biofuel injectors in the automotive industry or solenoid valves for corrosive media operating with short switching times and high pressures.
Chemical composition
| Element | C | Si | Mn | S | P | Cr | Co | Mo | Al | Fe |
| Wt(%) | ≤0.04 | ≤0.50 | ≤1.00 | ≤0.015 | ≤0.015 | 9.00-11.00 | 9.0-10.50 | 1.70-2.30 | 0.70-1.30 | Re |
MAIN PROPERTIES
Saturation polarization of JS = 1.80 T
High electrical resistivity of ρe= 0.79 µΩm
Excellent corrosion resistance in comparison to other CoFe alloys.
Cost-optimized CoFe alloy with low cobalt content of 9 wt%
TYPICAL APPLICATIONS
Actuator and solenoid valve applications in corrosive media
Physical properties
Density ρ:7.75g/cm3
Thermal conductivity (25 °C) λ:20W(m.K)
Thermal expansion coefficient (20-100°C)α:10.9x10-6/K
Electrical resistivity ρe:0.79 μΩm
STATIC MAGNETIC PROPERTIES
Coercivity HC:130 A/m
Saturation polarization Js: 1.80 T
Saturation magnetization BS at H = 40 kA/m:1.85T
Maximum permeability µmax:3,000
Magnetostriction constant λS:+30PPM
Curie temperature TC:800°C
Typical magnetic properties
| Magnetic Properties | B400(T) | B800(T) | B4000(T) | B8000(T) | B16000(T) | μm(mH/m) | HC(A/m) |
| 9 CR | 0.55 | 1.10 | 1.43 | 1.60 | 1.97 | 3.05 | 180 |
Mechanical properties (final annealed)
Young's modulus E: 180 GPa
Yield strength Rp0.2: 330 MPa
Tensile strength Rm: 490 MPa
Elongation A: 35%
Hardness: HV 170
Mechanical properties (hot rolled)
Yield strength Rp0.2: 410MPa
Tensile strength Rm: 600MPa
Elongation A: 30%
Hardness: HV 240
Forms of supply
• Solid rods, diameters 12.5 – 100 mm
• Wire material, diameters 0.2-12 mm
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