An Introduction to Grey Iron

Material: An Introduction to Grey Iron
Composition: Fe/2.9-4.0C/1.5-2.6Si/0.5-0.7Mn+ traces of S P
Property Minimum Value (S.I.) Maximum Value (S.I.) Units (S.I.) Minimum Value (Imp.) Maximum Value (Imp.) Units (Imp.)
Atomic Volume (average) 0.0076 0.0082 m3/kmol 463.78 500.394 in3/kmol
Density 6.9 7.35 Mg/m3 430.753 458.846 lb/ft3
Energy Content 34 66 MJ/kg 3683.51 7150.35 kcal/lb
Bulk Modulus 54 107 GPa 7.83203 15.519 106 psi
Compressive Strength 130 590 MPa 18.8549 85.5723 ksi
Ductility 0.0017 0.007 0.0017 0.007 NULL
Elastic Limit 65 293 MPa 9.42745 42.4961 ksi
Endurance Limit 40 171 MPa 5.8015 24.8014 ksi
Fracture Toughness 10 24 MPa.m1/2 9.10047 21.8411 ksi.in1/2
Hardness 900 3100 MPa 130.534 449.617 ksi
Loss Coefficient 0.01 0.035 0.01 0.035 NULL
Modulus of Rupture 75 340 MPa 10.8778 49.3128 ksi
Poisson's Ratio 0.255 0.265 0.255 0.265 NULL
Shear Modulus 31 60 GPa 4.49617 8.70226 106 psi
Tensile Strength 100 450 MPa 14.5038 65.267 ksi
Young's Modulus 80 150 GPa 11.603 21.7557 106 psi
Glass Temperature K °F
Latent Heat of Fusion 270 275 kJ/kg 116.079 118.228 BTU/lb
Maximum Service Temperature 623 723 K 661.73 841.73 °F
Melting Point 1403 1650 K 2065.73 2510.33 °F
Minimum Service Temperature 123 223 K -238.27 -58.27 °F
Specific Heat 265 505 J/kg.K 0.205072 0.390798 BTU/lb.F
Thermal Conductivity 40 72 W/m.K 74.8813 134.786 BTU.ft/h.ft2.F
Thermal Expansion 11 13 10-6/K 19.8 23.4 10-6/°F
Breakdown Potential MV/m V/mil
Dielectric Constant NULL
Resistivity 62 86 10-8 ohm.m 62 86 10-8 ohm.m
Environmental Properties
  Resistance Factors
1=Poor 5=Excellent
Flammability 5
Fresh Water 4
Organic Solvents 5
Oxidation at 500C 4
Sea Water 3
Strong Acid 2
Strong Alkalis 3
UV 5
Wear 5
Weak Acid 4
Weak Alkalis 5

This data is provided subject to AZoM.com's terms and conditions. Data reproduced with permission of Granta Design Limited www.grantadesign.com

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