446 Stainless Steel, Soft Tempered Wire

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446 Stainless Steel, Soft Tempered Wire
Categories:	Metal; Ferrous Metal; Stainless Steel; T 400 Series Stainless Steel
Material Notes:	Properties below for 6.4 mm (1/4 in.) diameter wire. 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	Metric	English	Comments

Density	7.80 g/cc	0.282 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	195	195	Estimated from Rockwell B
Hardness, Knoop	211	211	Estimated from Rockwell B
Hardness, Rockwell A	56.4	56.4	Estimated from Rockwell B
Hardness, Rockwell B	92	92
Hardness, Vickers	195	195	Estimated from Rockwell B
Tensile Strength, Ultimate	655 MPa	95000 psi
Tensile Strength, Yield	550 MPa @Strain 0.2 %	79800 psi @Strain 0.2 %
Elongation at Break	15 %	15 %	in 25 mm
Reduction of Area	50 %	50 %
Modulus of Elasticity	200 GPa	29000 ksi	Annealed

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000640 ohm-cm	0.0000640 ohm-cm

Thermal Properties	Metric	English	Comments
CTE, linear	10.4 µm/m-°C @Temperature 0.000 - 100 °C	5.78 µin/in-°F @Temperature 32.0 - 212 °F
	10.8 µm/m-°C @Temperature 0.000 - 315 °C	6.00 µin/in-°F @Temperature 32.0 - 599 °F
	11.2 µm/m-°C @Temperature 0.000 - 540 °C	6.22 µin/in-°F @Temperature 32.0 - 1000 °F
	11.5 µm/m-°C @Temperature 0.000 - 650 °C	6.39 µin/in-°F @Temperature 32.0 - 1200 °F
	12.1 µm/m-°C @Temperature 0.000 - 980 °C	6.72 µin/in-°F @Temperature 32.0 - 1800 °F
Specific Heat Capacity	0.460 J/g-°C	0.110 BTU/lb-°F
Thermal Conductivity	21.6 W/m-K	150 BTU-in/hr-ft²-°F
	24.6 W/m-K @Temperature 500 °C	171 BTU-in/hr-ft²-°F @Temperature 932 °F
Melting Point	1425 - 1510 °C	2597 - 2750 °F
Solidus	1425 °C	2597 °F
Liquidus	1510 °C	2750 °F
Maximum Service Temperature, Air	1095 °C	2003 °F	Oxidation resistant for service up to 1095°C. Mechanical properties suffer below this point.

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

References for this datasheet.

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MQ446A2 / 13217

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