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Carbon		0.2 max
Chromium		23 - 27
Iron		Balance
Manganese		1.5 max
Nitrogen		0.25 max
Phosphorus		0.04 max
Silicon		1 max
Sulphur		0.03 max

Principal Design Features		A ferritic, non-heat treatable stainless steel that offers good resistance to high temperature corrosion and oxidation.

Applications		Boiler baffles, furnace parts, X-ray tube bases, oil burner components, kiln linings, glass molds, annealing boxes and industrial mufflers.

Machinability		Slow speeds and positive feeds combined with rigid mounts and sharp tooling surfaces optimize machining 446.

Welding		Most common welding methods can be successfully employed with this alloy. Type 308 welding material may be used, but will not display scaling resistance equal to the base metal. Consideration must be given to the differences in coefficient of thermal expansion of base and weld metal. Oxyacetylene welding is not recommended.

Forging		Begin forging at 2100 F and finish at 1600 F. The final 10% of work should be performed below 1600 F for optimum grain refinement and room temperature embrittlement.

Hot Working		2000-2150 F. Last 10% of work should be performed below 1600 F for grain refinement.

Cold Working		Due to its elevated chromium content, 446 is more difficult than other stainless steels to bend, draw, spin and weld.

Annealing		Soak at 1500 F and water quench. Do not exceed 1650 F at any time. Slow cooling below 1200 F will result in the loss of ductility.

Hardening		This alloy does not respond to heat treatment.

Physical Data : [top]

Density (lb / cu. in.)	0.27
Specific Gravity	7.45
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])	0.12
Electrical Resistivity (microhm-cm (at 68 Deg F))	402
Melting Point (Deg F)	2750
Modulus of Elasticity Tension	29

Form		Strip
Condition		Cold Reduced 10%
Temper		70
Tensile Strength		87
Yield Strength		74
Elongation		20
Form		Strip
Condition		Cold Reduced 20%
Temper		70
Tensile Strength		106
Yield Strength		102
Elongation		4
Form		Strip
Condition		Cold Reduced 40%
Temper		70
Tensile Strength		124
Yield Strength		121
Elongation		3
Form		Strip
Condition		Cold Reduced 60%
Temper		70
Tensile Strength		135
Yield Strength		130
Elongation		2
Form		Strip
Condition		Test Specimen Annealed
Temper		70
Tensile Strength		93
Yield Strength		54
Elongation		23
Reduction of Area		48
Form		Strip
Condition		Test Specimen Annealed
Temper		600
Tensile Strength		83
Yield Strength		47
Elongation		19
Reduction of Area		39
Form		Strip
Condition		Test Specimen Annealed
Temper		800
Tensile Strength		81
Yield Strength		45
Elongation		18
Reduction of Area		44
Form		Strip
Condition		Test Specimen Annealed
Temper		900
Form		Strip
Condition		Test Specimen Annealed
Temper		1000
Form		Strip
Condition		Test Specimen Annealed
Temper		1100
Form		Strip
Condition		Test Specimen Annealed
Temper		1200
Form		Strip
Condition		Test Specimen Annealed
Temper		1300
Form		Strip
Condition		Test Specimen Annealed
Temper		1400
Form		Strip
Condition		Test Specimen Annealed
Temper		1500
Form		Strip
Condition		Test Specimen Annealed
Temper		1600
Tensile Strength		5
Yield Strength		3
Elongation		125
Reduction of Area		97