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Elmet Technologies

AISI 5140 Steel, oil quenched 845°C (1550°F), 650°C (1200°F) temper, 25 mm (1 in.) round
Categories: Metal; Ferrous Metal; Alloy Steel; AISI 5000 Series Steel; Low Alloy Steel; Carbon Steel; Medium Carbon Steel
Material Notes: Oil quenched from 845°C, 650°C (1200°F) temper, 25 mm round. Post oil quenched hardness 53 HRC surface, 48 HRC half-radius, 45 HRC center
Key Words: B.S. 530 A 40, B.S. 530 H 40, B.S. 530 M 40, B.S. 2 S 117, DIN 1.7035, AFNOR 42 C 4 (Fr), UNI 40 Cr 4 (Ital.), UNI 41 Cr 4 KB (Ital.), JIS SCr 4 H (Japan.), UNS G51400, ASTM A322, ASTM A331, ASTM A505, ASTM A519, SAE J404, SAE J412, SAE J770
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Physical PropertiesMetricEnglishComments
Density 7.85 g/cc0.284 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 235235
Hardness, Knoop 259259Converted from Brinell
Hardness, Rockwell B 9797Converted from Brinell
Hardness, Rockwell C 2121Converted from Brinell
Hardness, Vickers 247247Converted from Brinell
Tensile Strength, Ultimate 807 MPa117000 psi
Tensile Strength, Yield 650 MPa94300 psi
Elongation at Break 22.5 %22.5 %in 50mm.
Modulus of Elasticity 205 GPa29700 ksiTypical for steel
Bulk Modulus 160 GPa23200 ksiTypical for steel
Poissons Ratio 0.290.29Calculated
Machinability 65 %65 %annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus 80.0 GPa11600 ksiTypical for steels
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity  0.0000228 ohm-cm
@Temperature 20.0 °C		0.0000228 ohm-cm
@Temperature 68.0 °F
 0.0000281 ohm-cm
@Temperature 100 °C		0.0000281 ohm-cm
@Temperature 212 °F
 0.0000352 ohm-cm
@Temperature 200 °C		0.0000352 ohm-cm
@Temperature 392 °F
 0.0000530 ohm-cm
@Temperature 400 °C		0.0000530 ohm-cm
@Temperature 752 °F
 0.0000785 ohm-cm
@Temperature 600 °C		0.0000785 ohm-cm
@Temperature 1110 °F
 
Thermal PropertiesMetricEnglishComments
CTE, linear  12.6 µm/m-°C
@Temperature 20.0 - 200 °C		7.00 µin/in-°F
@Temperature 68.0 - 392 °F
 13.3 µm/m-°C
@Temperature 20.0 - 300 °C		7.39 µin/in-°F
@Temperature 68.0 - 572 °F
 13.9 µm/m-°C
@Temperature 20.0 - 400 °C		7.72 µin/in-°F
@Temperature 68.0 - 752 °F
 14.0 µm/m-°C
@Temperature 20.0 - 500 °C		7.78 µin/in-°F
@Temperature 68.0 - 932 °F
 14.6 µm/m-°C
@Temperature 20.0 - 600 °C		8.11 µin/in-°F
@Temperature 68.0 - 1110 °F
 14.9 µm/m-°C
@Temperature 20.0 - 700 °C		8.28 µin/in-°F
@Temperature 68.0 - 1290 °F
Specific Heat Capacity  0.452 J/g-°C
@Temperature >=100 °C		0.108 BTU/lb-°F
@Temperature >=212 °F
 0.473 J/g-°C
@Temperature 20.0 - 200 °C		0.113 BTU/lb-°F
@Temperature 68.0 - 392 °F
 0.519 J/g-°C
@Temperature 20.0 - 400 °C		0.124 BTU/lb-°F
@Temperature 68.0 - 752 °F
Thermal Conductivity  31.3 W/m-K
@Temperature 600 °C		217 BTU-in/hr-ft²-°F
@Temperature 1110 °F
 37.7 W/m-K
@Temperature 400 °C		262 BTU-in/hr-ft²-°F
@Temperature 752 °F
 43.4 W/m-K
@Temperature 200 °C		301 BTU-in/hr-ft²-°F
@Temperature 392 °F
 44.6 W/m-K
@Temperature 100 °C		310 BTU-in/hr-ft²-°F
@Temperature 212 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.38 - 0.43 %0.38 - 0.43 %
Chromium, Cr 0.70 - 0.90 %0.70 - 0.90 %
Iron, Fe 97.395 - 98.07 %97.395 - 98.07 %As remainder
Manganese, Mn 0.70 - 0.90 %0.70 - 0.90 %
Phosphorus, P <= 0.035 %<= 0.035 %
Silicon, Si 0.15 - 0.30 %0.15 - 0.30 %
Sulfur, S <= 0.040 %<= 0.040 %

References for this datasheet.

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M514AU / 8085

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