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Elmet Technologies

Ovako 42NiSiCrMo8-7-3* 497Q Steel, Soft annealing
Categories: Metal; Ferrous Metal; Alloy Steel

Material Notes: General Information: Ovako 497Q is an ingot cast high tensile quench and tempering steel with very high strength and toughness. Ovako 497Q is an excellent choice for shafts and machine components. The high silicon content will give an improved tempering resistance. The grade is produced with the quality class IQ (isotropic quality). This ensures a very low number of elongated sulphide inclusions which will give more isotropic properties. The high oxidic cleanliness will enable the steel to meet the same high demands as for re-melted qualities. The carbon range will give a high surface hardness after surface induction hardening.

IQ-Steel:(Isotropic Quality) is an isotropic quality ultra clean steel. IQ-Steel is optimized for fatigue strength by a strict control of steel cleanliness. IQ-Steel, a further development of BQ-Steel, is an isotropic and ultra clean steel with properties that match re-melted steels. Based on thousands of examinations by Ovako into the effects of defects on fatigue performance, the metallurgy of IQ-Steel is purer and far more consistent than conventional grades, and designed specifically to perform well in multi axial loading. This enables the manufacturing of lighter, slimmed down components like gears, bearings and other critical parts. The steels are helping our customers to achieve new design solutions and implement higher standards of finished product performance. Key to these practical advantages are Ovako’s own unique, clean and consistent modern steelmaking processes that remove harmful inclusions and impurities from within the steel. IQ-Steels contain smaller and more fragmented inclusions and can handle much higher mechanical forces in all directions than conventional steels. IQ-Steels are newer, but already now well established in high pressure automotive applications. Modern diesel engines, with high and cyclic injection pressures, have proven to be an ideal application. Transmission components are another emerging area of strong interest.

Information provided by Ovako

Key Words: UNS K 44220, AMS 6417, AMS 6419, ASTM/SAE 300M
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 7.80 g/cc0.282 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 220220All Formats
Modulus of Elasticity 210 GPa30500 ksi
Poissons Ratio 0.300.30
Shear Modulus 80.0 GPa11600 ksi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000200 - 0.00000250 ohm-cm0.00000200 - 0.00000250 ohm-cm
 
Thermal PropertiesMetricEnglishComments
CTE, linear 12.0 µm/m-°C
@Temperature 20.0 - 300 °C
6.67 µin/in-°F
@Temperature 68.0 - 572 °F
Specific Heat Capacity 0.460 - 0.480 J/g-°C
@Temperature 50.0 - 100 °C
0.110 - 0.115 BTU/lb-°F
@Temperature 122 - 212 °F
Thermal Conductivity 40.0 - 45.0 W/m-K278 - 312 BTU-in/hr-ft²-°FAmbient temperature
Transformation Temperature 304 °C579 °FMS
 744 °C1370 °FAC1
 835 °C1540 °FAC3
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.39 - 0.44 %0.39 - 0.44 %
Chromium, Cr 0.70 - 0.95 %0.70 - 0.95 %
Iron, Fe 93.34 - 94.8 %93.34 - 94.8 %As Balance
Manganese, Mn 0.60 - 0.90 %0.60 - 0.90 %
Molybdenum, Mo 0.30 - 0.45 %0.30 - 0.45 %
Nickel, Ni 1.65 - 2.0 %1.65 - 2.0 %
Phosphorus, P <= 0.015 %<= 0.015 %
Silicon, Si 1.5 - 1.8 %1.5 - 1.8 %
Sulfur, S <= 0.0010 %<= 0.0010 %
Vanadium, V 0.060 - 0.10 %0.060 - 0.10 %
 
Descriptive Properties
WeldabilityCEV 1.03max
 Pcm 0.68max

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NOVAKO311 / 234610

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