446 Stainless Steel, Annealed Bar

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446 Stainless Steel, Annealed Bar
Categories:	Metal; Ferrous Metal; Stainless Steel; T 400 Series Stainless Steel
Material Notes:	The excellent corrosion resistance of this non-hardenable, ferritic stainless is due to the high chromium content. This allows use in applications such as heaters, burners, nozzles, electrodes, and metal-ceramic seals. Typical annealing temperatures are 730-815°C; followed by air or water quench.
Key Words:	ASME SA268; ASTM A176; ASTM A276; ASTM A314; ASTM A473; ASTM A511; ASTM A580, UNS S44600; FED QQ-S-763; FED QQ-S-766; Mil Spec MIL-S-862; SAE J405 (51466)
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Physical Properties	Original Value	Comments

Density	7.80 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	169	Estimated from Rockwell B
Hardness, Knoop	184	Estimated from Rockwell B
Hardness, Rockwell A	52.8	Estimated from Rockwell B
Hardness, Rockwell B	86
Hardness, Vickers	169	Estimated from Rockwell B
Tensile Strength, Ultimate	550 MPa
Tensile Strength, Yield	345 MPa @Strain 0.2 %
Elongation at Break	25 %	in 5 cm.
Reduction of Area	45 %
Modulus of Elasticity	200 GPa

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000640 ohm-cm
Magnetic Permeability	400 - 700

Thermal Properties	Original Value	Comments
CTE, linear	10.4 µm/m-°C @Temperature 0.000 - 100 °C
	10.8 µm/m-°C @Temperature 0.000 - 315 °C
	11.2 µm/m-°C @Temperature 0.000 - 540 °C
	11.5 µm/m-°C @Temperature 0.000 - 650 °C
	12.1 µm/m-°C @Temperature 0.000 - 980 °C
Specific Heat Capacity	0.460 J/g-°C
Thermal Conductivity	21.6 W/m-K
	24.6 W/m-K @Temperature 500 °C
Melting Point	1425 - 1510 °C
Solidus	1425 °C
Liquidus	1510 °C
Maximum Service Temperature, Air	1095 °C	Oxidation resistant for service up to 1095°C. Mechanical properties suffer below this point.

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.20 %
Chromium, Cr	23 - 27 %
Iron, Fe	75 %	As remainder
Manganese, Mn	<= 1.5 %
Nickel, Ni	<= 0.25 %
Phosphorus, P	<= 0.040 %
Silicon, Si	<= 1.0 %
Sulfur, S	<= 0.030 %

References for this datasheet.

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MQ446A4 / 13219

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