AISI 4137H Steel

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AISI 4137H Steel
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 4000 Series Steel; Low Alloy Steel; Carbon Steel; Medium Carbon Steel
Material Notes:	Available as hot rolled and cold rolled sheet and strip, hot rolled and cold rolled finished bar, and cold heading quality wire. Suitable for heat treatment, machining into components, or, in the as-finished condition, constructional applications and similar uses.
Key Words:	UNS H41370, ASTM A304, SAE J1268, DIN 1.7225, AFNOR 40 CD 4 (France), alloy steels, AFNOR 42 CD 4, JIS SCM 4 H, JIS SCM 4, SS14 2244 (Sweden), B.S. 708 A 42 (UK), B.S. 708 M 40 (UK), B.S. 709 M 40 (UK)
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Physical Properties	Metric	English	Comments

Density	7.85 g/cc	0.284 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	187 - 229	187 - 229	annealed and cold drawn
Hardness, Knoop	230	230	Converted from Brinell
Hardness, Rockwell B	94	94	Converted from Brinell
Hardness, Rockwell C	15	15	Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only.
Hardness, Vickers	218	218	Converted from Brinell
Modulus of Elasticity	205 GPa	29700 ksi	Typical for steel
Bulk Modulus	160 GPa	23200 ksi	Typical for steel
Poissons Ratio	0.29	0.29	Calculated
Machinability	70 %	70 %	Based on AISI 1212 steel = 100%
Shear Modulus	80.0 GPa	11600 ksi	Typical for steel

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000223 ohm-cm	0.0000223 ohm-cm

Thermal Properties	Metric	English	Comments
CTE, linear	11.2 µm/m-°C @Temperature 20.0 °C	6.22 µin/in-°F @Temperature 68.0 °F
	12.4 µm/m-°C @Temperature 250 °C	6.89 µin/in-°F @Temperature 482 °F
	13.5 µm/m-°C @Temperature 500 °C	7.50 µin/in-°F @Temperature 932 °F
Specific Heat Capacity	0.477 J/g-°C	0.114 BTU/lb-°F
Thermal Conductivity	42.7 W/m-K	296 BTU-in/hr-ft²-°F

Component Elements Properties	Metric	English	Comments
Carbon, C	0.34 - 0.41 %	0.34 - 0.41 %
Chromium, Cr	0.75 - 1.2 %	0.75 - 1.2 %
Iron, Fe	96.72 - 98.01 %	96.72 - 98.01 %	As remainder
Manganese, Mn	0.60 - 1.0 %	0.60 - 1.0 %
Molybdenum, Mo	0.15 - 0.25 %	0.15 - 0.25 %
Phosphorus, P	<= 0.035 %	<= 0.035 %
Silicon, Si	0.15 - 0.35 %	0.15 - 0.35 %
Sulfur, S	<= 0.040 %	<= 0.040 %

References for this datasheet.

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