AISI 1040 Steel, water quenched from 845°C (1550°F), 540°C (1000°F) temper, 13 mm (0.5 in.) round

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AISI 1040 Steel, water quenched from 845°C (1550°F), 540°C (1000°F) temper, 13 mm (0.5 in.) round
Categories:	Metal; Ferrous Metal; Carbon Steel; AISI 1000 Series Steel; Medium Carbon Steel
Material Notes:	Typical uses include machine, plow, and carriage bolts, tie wire, cylinder head studs, and machined parts, U-bolts, concrete reinforcing rods, forgings, and non-critical springs. Post water quenched hardness: 54 HRC surface, 53 HRC half-radius, 53 HRC center.
Key Words:	UNS G10400, ASTM A29, ASTM A108, ASTM A510, ASTM A519, ASTM A546, ASTM A576, ASTM A682, MIL SPEC MIL-S-11310 (CS1040), SAE J403, SAE J412, SAE J414, DIN 1.1186, JIS S 40 C, BS 970 060A40, BS 970 080A40, BS 970 080M40 (EN8), BS 2 S 93
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Physical Properties	Original Value	Comments

Density	7.845 g/cc	Chemical composition of 0.435% C, 0.69% Mn, 0.20% Si, annealed at 860°C (1580°F).

Mechanical Properties	Original Value	Comments
Hardness, Brinell	223
Hardness, Knoop	246	Converted from Brinell
Hardness, Rockwell B	96	Converted from Brinell
Hardness, Rockwell C	18	Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only.
Hardness, Vickers	235	Converted from Brinell
Tensile Strength, Ultimate	752 MPa
Tensile Strength, Yield	562 MPa
Elongation at Break	23.8 %	in 50 mm
Reduction of Area	61.5 %
Modulus of Elasticity	200 GPa	Typical for steel
Bulk Modulus	160 GPa	Typical for steels
Poissons Ratio	0.29	Typical For Steel
Shear Modulus	80.0 GPa	Typical for steels
Izod Impact	45.0 J	annealed at 790°C (1450°F)
	49.0 J	as rolled
	65.0 J	normalized at 900°C (1650°F)

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000171 ohm-cm @Temperature 20.0 °C
	0.0000221 ohm-cm @Temperature 100 °C
	0.0000296 ohm-cm @Temperature 200 °C
	0.0000493 ohm-cm @Temperature 400 °C
	0.0000763 ohm-cm @Temperature 600 °C
	0.0000932 ohm-cm @Temperature 700 °C
	0.0001111 ohm-cm @Temperature 800 °C
	0.0001149 ohm-cm @Temperature 900 °C
	0.0001179 ohm-cm @Temperature 1000 °C

Thermal Properties	Original Value	Comments
CTE, linear	11.3 µm/m-°C @Temperature 20.0 - 100 °C	Composition of 0.40% C, 0.11% Mn, 0.01% P, 0.03% S, 0.03% Si, 0.03% Cu.
	12.1 µm/m-°C @Temperature 20.0 - 200 °C	Composition of 0.40% C, 0.11% Mn, 0.01% P, 0.03% S, 0.03% Si, 0.03% Cu.
	12.2 µm/m-°C @Temperature 20.0 - 300 °C	Composition of 0.40% C, 0.11% Mn, 0.01% P, 0.03% S, 0.03% Si, 0.03% Cu
	13.3 µm/m-°C @Temperature 20.0 - 400 °C	Composition of 0.40% C, 0.11% Mn, 0.01% P, 0.03% S, 0.03% Si, 0.03% Cu
	13.9 µm/m-°C @Temperature 20.0 - 500 °C	Composition of 0.40% C, 0.11% Mn, 0.01% P, 0.03% S, 0.03% Si, 0.03% Cu
	14.2 µm/m-°C @Temperature 20.0 - 600 °C	Composition of 0.40% C, 0.11% Mn, 0.01% P, 0.03% S, 0.03% Si, 0.03% Cu
	14.8 µm/m-°C @Temperature 20.0 - 700 °C	Composition of 0.40% C, 0.11% Mn, 0.01% P, 0.03% S, 0.03% Si, 0.03% Cu
Specific Heat Capacity	0.486 J/g-°C @Temperature >=100 °C
	0.515 J/g-°C @Temperature 150 - 200 °C
	0.528 J/g-°C @Temperature 200 - 250 °C
	0.548 J/g-°C @Temperature 250 - 300 °C
	0.569 J/g-°C @Temperature 300 - 350 °C
	0.586 J/g-°C @Temperature 350 - 400 °C
	0.624 J/g-°C @Temperature 750 - 800 °C
	0.649 J/g-°C @Temperature 450 - 500 °C
	0.708 J/g-°C @Temperature 550 - 600 °C
	0.770 J/g-°C @Temperature 650 - 700 °C
	1.583 J/g-°C @Temperature 700 - 750 °C
Thermal Conductivity	24.7 W/m-K @Temperature 800 °C
	29.8 W/m-K @Temperature 1200 °C
	30.1 W/m-K @Temperature 700 °C
	32.9 W/m-K @Temperature 1000 °C
	33.9 W/m-K @Temperature 600 °C
	38.2 W/m-K @Temperature 500 °C
	41.7 W/m-K @Temperature 400 °C
	45.7 W/m-K @Temperature 300 °C
	48.1 W/m-K @Temperature 200 °C
	50.7 W/m-K @Temperature 100 °C
	51.9 W/m-K @Temperature 0.000 °C

Component Elements Properties	Original Value	Comments
Carbon, C	0.37 - 0.44 %
Iron, Fe	98.6 - 99 %	As remainder
Manganese, Mn	0.60 - 0.90 %
Phosphorus, P	<= 0.040 %
Sulfur, S	<= 0.050 %

References for this datasheet.

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M104BI / 6985

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