Ovako 27MnCrB5-2 5464 (BCM311) Steel, +AR

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Ovako 27MnCrB5-2 5464 (BCM311) Steel, +AR
Categories:	Metal; Ferrous Metal; Alloy Steel
Material Notes:	General Information: WR-Steel(Wear resistant ) WR-steel, stands for wear-resistant steel. This group of steel includes a broad range of grades with a wide range of hardness levels 350 – 650 HV, dimensions and steel grades designed to give you a wear-resistant advantage when making product exposed to a high degree of wear and where service life is important. WR-steels are characterized by consistent properties and cost effectiveness due to optimized alloy content for different end applications. Information provided by Ovako
Key Words:	SB9660 - 27MnCrB5-2, SB9652 - 28MnCrB5-2, SB9667 - 29MnCrB5-2, BCM 311
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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	<= 240 @Thickness <=90.0 mm	<= 240 @Thickness <=3.54 in	Round bar
Modulus of Elasticity	210 GPa	30500 ksi
Poissons Ratio	0.30	0.30
Shear Modulus	80.0 GPa	11600 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000200 - 0.00000250 ohm-cm	0.00000200 - 0.00000250 ohm-cm

Thermal Properties	Metric	English	Comments
CTE, linear	12.0 µm/m-°C @Temperature 20.0 - 300 °C	6.67 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.460 - 0.480 J/g-°C @Temperature 50.0 - 100 °C	0.110 - 0.115 BTU/lb-°F @Temperature 122 - 212 °F
Thermal Conductivity	40.0 - 45.0 W/m-K	278 - 312 BTU-in/hr-ft²-°F	Ambient temperature
Transformation Temperature	382 °C	720 °F	MS
	720 °C	1330 °F	AC1
	786 °C	1450 °F	AC3

Component Elements Properties	Metric	English	Comments
Boron, B	0.00080 - 0.0050 %	0.00080 - 0.0050 %
Carbon, C	0.24 - 0.30 %	0.24 - 0.30 %
Chromium, Cr	0.30 - 0.60 %	0.30 - 0.60 %
Iron, Fe	97.24 - 98.36 %	97.24 - 98.36 %	As Balance
Manganese, Mn	1.1 - 1.4 %	1.1 - 1.4 %
Phosphorus, P	<= 0.025 %	<= 0.025 %
Silicon, Si	<= 0.40 %	<= 0.40 %
Sulfur, S	<= 0.035 %	<= 0.035 %

Descriptive Properties
Weldability	CEV 0.58_max
	Pcm 0.39_max

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