Schmolz + Bickenbach UgiPerm™ 12FM Stainless Steel Bar

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Schmolz + Bickenbach UgiPerm™ 12FM Stainless Steel Bar
Categories:	Metal; Ferrous Metal; Ferritic; Stainless Steel
Material Notes:	Description: UgiPerm™ 12FM is a 12% chrome ferritic stainless with improved magnetic properties designed for use in electro-injectors, valves and many other applications. The grade was developed for magnetic applications requiring a very low coercive magnetic field (Hc) and a very high permeability. UgiPerm™ 12FM has a high level of electrical resistivity that shortens activation time when used in pulse mode. It offers excellent magnetic properties with superior corrosion resistance no offered by iron alloys. Applications: Solenoid valves, fuel injectors, irrigation valves, magnetic sensors, magnetic brakes, and electro-mechanical devices. Magnetic Properties (Heat Treatment): Uniformly heat at 800°/900°C (1470°F/1650°F) for 2 hours, then cool to 500°C (930°F) at a rate of 50°C (120°F) per hour. The cycle should be done in a dry hydrogen or vacuum atmosphere to prevent oxidation. Information provided by Schmolz + Bickenbach
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Physical Properties	Original Value	Comments

Density	0.279 lb/in³

Mechanical Properties	Original Value	Comments
Hardness, Rockwell B	87 - 92
Tensile Strength	65.0 - 80.0 ksi @Thickness <=25.4 mm	Cold Drawn Bar
Tensile Strength, Yield	45.0 - 65.0 ksi @Strain 0.2 %, Thickness <=25.4 mm	Cold Drawn Bar
Elongation at Yield	>= 30 % @Thickness <=25.4 mm	Cold Drawn Bar
Reduction of Area	>= 60 % @Thickness <=25.4 mm	Cold Drawn Bar
Tensile Modulus	29000 ksi

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000780 ohm-cm
Magnetic Permeability	2000 - 3000
Magnetic Coercive Force, H_c	1.2 - 1.6 Oe
Magnetic Saturation Flux Density, B_max	17000 Gauss
Magnetic Remanence, B_r	5000 - 7000 Gauss
Curie Temperature	1350 °F

Thermal Properties	Original Value	Comments
CTE, linear	5.75 µin/in-°F @Temperature 20.0 - 100 °C
	6.00 µin/in-°F @Temperature 20.0 - 204 °C
	6.40 µin/in-°F @Temperature 20.0 - 299 °C
	6.50 µin/in-°F @Temperature 20.0 - 432 °C
	6.80 µin/in-°F @Temperature 20.0 - 499 °C
Thermal Conductivity	152 BTU-in/hr-ft²-°F @Temperature 20.0 °C

Processing Properties	Original Value	Comments
Annealing Temperature	1290 - 1470 °F @Time 3600 sec	Soft; Air cool
Hot-Working Temperature	900 °F	Flow Stress of 110 MP at 3.6s^-1
	1000 °F	Flow Stress of 65 MP at 3.6s^-1
	1100 °F	Flow Stress of 40 MP at 3.6s^-1
	1200 °F	Flow Stress of 25 MP at 3.6s^-1
	1380 - 2190 °F	Uniformly heating

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.020 %
Chromium, Cr	11.5 - 12.5 %
Iron, Fe	>= 83.44 %
Manganese, Mn	0.30 - 0.50 %
Molybdenum, Mo	0.25 - 0.75 %
Nickel, Ni	>= 0.50 %
Phosphorus, P	<= 0.040 %
Silicon, Si	1.0 - 2.0 %
Sulfur, S	0.15 - 0.25 %

Descriptive Properties
Corrosion Resistance	Humidity	3/4
	NaCl 0.2g/l	1.65% mass loss; 60°C; 500 hrs
	NaCl 0.4g/l	1.6% mass loss; 60°C; 500 hrs
	NaCl 0.6g/l	2.4% mass loss; 60°C; 500 hrs
	Nitric Acid	2/4
	Sodium Carbonate	2/4

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NSCHMO042 / 125915

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