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AISI 9255 Steel, annealed at 845°C (1550°F)
Categories:
Metal
;
Ferrous Metal
;
Alloy Steel
;
AISI 9000 Series Steel
;
Low Alloy Steel
;
Carbon Steel
;
Medium Carbon Steel
Key Words:
AFNOR 55 S 7, UNI 55 Si 8, SS14 2085 (Sweden), B.S. 250 A 53, UNS G92550, ASTM A322, ASTM A519, SAE J404, SAE J412, SAE J770, DIN 1.0904
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Physical Properties
Original Value
Comments
Density
7.85
g/cc
Mechanical Properties
Original Value
Comments
Hardness, Brinell
229
Hardness, Knoop
252
Converted from Brinell
Hardness, Rockwell B
96
Converted from Brinell
Hardness, Rockwell C
19
Converted from Brinell hardness. Value below normal HRC range, for comparison only.
Hardness, Vickers
241
Converted from Brinell hardness value.
Tensile Strength, Ultimate
770
MPa
Tensile Strength, Yield
490
MPa
Elongation at Break
21.7 %
in 50 mm
Modulus of Elasticity
200
GPa
Typical for steel
Bulk Modulus
160
GPa
Typical for steel
Poissons Ratio
0.29
Calculated
Machinability
40 %
hot rolled and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus
80.0
GPa
Typical for steel
Izod Impact
9.00
J
Electrical Properties
Original Value
Comments
Electrical Resistivity
0.0000174
ohm-cm
Estimated
Thermal Properties
Original Value
Comments
CTE, linear
11.5
µm/m-°C
@Temperature 20.0 °C
Estimated
12.2
µm/m-°C
@Temperature 250 °C
Estimated
13.9
µm/m-°C
@Temperature 500 °C
Estimated
14.7
µm/m-°C
@Temperature 1000 °C
Estimated
Specific Heat Capacity
0.472
J/g-°C
Estimated
Thermal Conductivity
51.9
W/m-K
Typical steel
Component Elements Properties
Original Value
Comments
Carbon, C
0.51 - 0.59 %
Iron, Fe
96.185 - 96.99 %
As remainder
Manganese, Mn
0.70 - 0.95 %
Phosphorus, P
<= 0.035 %
Silicon, Si
1.8 - 2.2 %
Sulfur, S
<= 0.040 %
References
for this datasheet.
Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's
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AISI 9255 Steel, normalized at 900°C (1650°F)
AISI 9255 Steel, oil quenched from 885°C (1625°F), 540°C (1000°F) temper, 13 mm (0.5 in.) round
AISI 9255 Steel, annealed at 845°C (1550°F), 25 mm (1 in.) round
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AISI 9255 Steel, normalized at 900°C (1650°F), 13 mm (0.5 in.) round
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