AISI Type S45500 Stainless Steel, hardened at 480°C (900°F) for 4 hours, air cooled

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AISI Type S45500 Stainless Steel, hardened at 480°C (900°F) for 4 hours, air cooled
Categories:	Metal; Ferrous Metal; Heat Resisting; Stainless Steel; T S40000 Series Stainless Steel
Material Notes:	Martensitic, age-hardenable, easily formable (annealed), no corrosion in fresh water, resists staining in normal air atmosphere, good resistance to pitting in 5% salt spray and 5% ferric chloride. For use in service temperatures up to 425°C.
Key Words:	UNS S45500, AMS 5578, AMS 5617, AMS 5672, AMS 5860, ASTM A313 (XM-16), ASTM A564 (XM-16), ASTM A705 (XM-16), martensitic, pitting resistant, T S45503
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Physical Properties	Original Value	Comments

Density	7.80 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	297 @Thickness 4.10 mm	Converted from Rockwell C hardness. Strip
	499 @Thickness 1.30 mm	Converted from Rockwell C hardness. Strip
	472 @Diameter 25.4 mm	Converted from Rockwell C hardness. Bar
Hardness, Knoop	318 @Thickness 4.10 mm	Converted from Rockwell C hardness. Strip
	553 @Thickness 1.30 mm	Converted from Rockwell C hardness. Strip
	522 @Diameter 25.4 mm	Converted from Rockwell C hardness. Bar
Hardness, Rockwell C	31 @Thickness 4.10 mm	Strip
	51 @Thickness 1.30 mm	Strip
	49 @Diameter 25.4 mm	Bar
Hardness, Vickers	308 @Thickness 4.10 mm	Converted from Rockwell C hardness. Strip
	533 @Thickness 1.30 mm	Converted from Rockwell C hardness. Strip
	502 @Diameter 25.4 mm	Converted from Rockwell C hardness. Bar
Tensile Strength, Ultimate	1795 MPa @Thickness 1.30 mm	Strip
	1795 MPa @Thickness 4.10 mm	Strip
	1725 MPa @Diameter 25.4 mm	Bar
Tensile Strength, Yield	1725 MPa @Strain 0.2 %, Thickness 1.30 mm	Strip
	1725 MPa @Strain 0.2 %, Thickness 4.10 mm	Strip
	1670 MPa @Strain 0.2 %, Diameter 25.4 mm	Bar
Elongation at Break	3.0 % @Thickness 4.10 mm	in 50 mm; Strip
	3.0 % @Thickness 1.30 mm	in 50 mm; Strip
	6.0 % @Thickness 1.30 mm	in 25 mm; Strip
	8.0 % @Thickness 4.10 mm	in 25 mm; Strip
	10 % @Diameter 25.4 mm	in 50 mm; Bar
Modulus of Elasticity	200 GPa	Typical for stainless steel
Notched Tensile Strength	1795 MPa @Diameter 25.4 mm	Bar
Charpy Impact	12.0 J @Diameter 25.4 mm	Bar

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000900 ohm-cm	annealed, 0.000075 Ohm-cm when annealed and aged at 510°C for 4 hours and air cooled.

Thermal Properties	Original Value	Comments
CTE, linear	10.6 µm/m-°C @Temperature 22.0 - 95.0 °C
	10.8 µm/m-°C @Temperature 22.0 - 150 °C
	11.2 µm/m-°C @Temperature 22.0 - 205 °C
	11.7 µm/m-°C @Temperature 22.0 - 260 °C
	12.1 µm/m-°C @Temperature 22.0 - 315 °C
Specific Heat Capacity	0.480 J/g-°C	Typical value for stainless steel.
Thermal Conductivity	18.0 W/m-K @Temperature 100 °C
	19.7 W/m-K @Temperature 200 °C
	21.3 W/m-K @Temperature 300 °C
	23.4 W/m-K @Temperature 400 °C
	24.7 W/m-K @Temperature 500 °C
Maximum Service Temperature, Air	425 °C

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.050 %
Chromium, Cr	11.8 %
Copper, Cu	2.0 %
Iron, Fe	73 %
Manganese, Mn	<= 0.50 %
Molybdenum, Mo	<= 0.50 %
Nickel, Ni	8.5 %
Niobium, Nb (Columbium, Cb)	2.0 %
Phosphorus, P	<= 0.040 %
Silicon, Si	<= 0.50 %
Sulfur, S	<= 0.030 %
Titanium, Ti	1.1 %

References for this datasheet.

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