AK Steel 410 Cb Martensitic Stainless steel

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AK Steel 410 Cb Martensitic Stainless steel
Categories:	Metal; Ferrous Metal; Martensitic; Stainless Steel; T 400 Series Stainless Steel
Material Notes:	AK Steel 410 Cb is an improved version of standard Type 410. The addition of columbium offers 3 major advantages: 1) Greater ease in heat treating, 2) Higher strength and toughness, 3) Improved grain size control. Information provided by AK Steel
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Physical Properties	Original Value	Comments

Density	7.73 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Rockwell B	92	Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 1400°F [9.5 mm plate, transverse]
Hardness, Rockwell C	32	Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 500°F [9.5 mm plate, transverse]
	33	Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 1000°F [9.5 mm plate, transverse]
Tensile Strength, Ultimate	655 MPa	Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 1400°F [9.5 mm plate, transverse]
	1213 MPa	Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 1000°F [9.5 mm plate, transverse]
	1248 MPa	Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 500°F [9.5 mm plate, transverse]
Tensile Strength, Yield	503 MPa @Strain 0.2 %, Thickness 9.50 mm	Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 1000°F [plate, transverse]
	924 MPa @Strain 0.2 %, Thickness 9.50 mm	Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 1000°F [plate, transverse]
	1034 MPa @Strain 0.2 %, Thickness 9.50 mm	Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 1000°F [plate, transverse]
Elongation at Break	14 %	in 2 inches, Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 1000°F [9.5 mm plate, transverse]
	15 %	in 2 inches, Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 500°F [9.5 mm plate, transverse]
	26 %	in 2 inches, Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 1400°F [9.5 mm plate, transverse]
Modulus of Elasticity	200 GPa
Charpy Impact	11.0 J	V-Notch, Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 1000°F [9.5 mm plate, transverse]
	38.0 J	V-Notch, Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 500°F [9.5 mm plate, transverse]
	110 J	V-Notch, Hardened at 1850°F for 30 min, oil quenched and tempered for 4 hrs at 1400°F [9.5 mm plate, transverse]

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000570 ohm-cm

Thermal Properties	Original Value	Comments
CTE, linear	9.90 µm/m-°C @Temperature 0.000 - 100 °C
	11.6 µm/m-°C @Temperature <=649 °C
Thermal Conductivity	24.8 W/m-K @Temperature 100 °C
	28.6 W/m-K @Temperature 500 °C

Component Elements Properties	Original Value	Comments
Carbon, C	0.12 %
Chromium, Cr	11.9 %
Iron, Fe	87.348 %	As Remainder
Manganese, Mn	0.19 %
Molybdenum, Mo	0.027 %
Niobium, Nb (Columbium, Cb)	0.15 %
Phosphorus, P	0.021 %
Silicon, Si	0.24 %
Sulfur, S	0.0040 %

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NAKS103 / 14706

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