AISI 1074 Steel, hot rolled, (discontinued)

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AISI 1074 Steel, hot rolled, (discontinued) (discontinued **)
Categories:	Metal; Ferrous Metal; Carbon Steel; AISI 1000 Series Steel; High Carbon Steel
Material Notes:	Good for high strength, heat treatable wire. Applications: springs for upholstered furniture and automotive seats and backs. This steel was deleted as a SAE-AISI standard in 1993.
Key Words:	UNS G10740, AMS 5120 D, ASTM A29, ASTM A682, FED QQ-S-700 (C1074), MIL SPEC MIL-S-46049, SAE J403, SAE J412, SAE J414
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Physical Properties	Metric	English	Comments

Density	7.87 g/cc	0.284 lb/in³	Typical for steel.

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	217	217
Hardness, Knoop	240	240	Converted from Brinell
Hardness, Rockwell B	95	95	Converted from Brinell
Hardness, Rockwell C	17	17	Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only.
Hardness, Vickers	228	228	Converted from Brinell
Tensile Strength, Ultimate	724 MPa	105000 psi
Tensile Strength, Yield	400 MPa	58000 psi
Elongation at Break	12 %	12 %	in 50 mm
Reduction of Area	30 %	30 %
Modulus of Elasticity	200 GPa	29000 ksi	Typical for steel
Bulk Modulus	160 GPa	23200 ksi	Typical for steel
Poissons Ratio	0.29	0.29	Typical For Steel
Shear Modulus	80.0 GPa	11600 ksi	Typical for steel

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000174 ohm-cm	0.0000174 ohm-cm	Typical steel

Thermal Properties	Metric	English	Comments
CTE, linear	11.6 µm/m-°C @Temperature 0.000 - 100 °C	6.44 µin/in-°F @Temperature 32.0 - 212 °F
	12.6 µm/m-°C @Temperature 0.000 - 200 °C	7.00 µin/in-°F @Temperature 32.0 - 392 °F
	13.3 µm/m-°C @Temperature 0.000 - 300 °C	7.39 µin/in-°F @Temperature 32.0 - 572 °F
	14.0 µm/m-°C @Temperature 0.000 - 400 °C	7.78 µin/in-°F @Temperature 32.0 - 752 °F
Specific Heat Capacity	0.472 J/g-°C	0.113 BTU/lb-°F	Typical steel
Thermal Conductivity	51.9 W/m-K	360 BTU-in/hr-ft²-°F	Typical steel

Component Elements Properties	Metric	English	Comments
Carbon, C	0.70 - 0.80 %	0.70 - 0.80 %
Iron, Fe	98.31 - 98.8 %	98.31 - 98.8 %	As remainder
Manganese, Mn	0.50 - 0.80 %	0.50 - 0.80 %
Phosphorus, P	<= 0.040 %	<= 0.040 %
Sulfur, S	<= 0.050 %	<= 0.050 %

References for this datasheet.

**
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M1074B / 7076

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