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ASTM A27 Cast Steel vs. S31254 Stainless Steel

Both ASTM A27 cast steel and S31254 stainless steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ASTM A27 cast steel and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25 to 27
40
Fatigue Strength, MPa 170 to 230
290
Poisson's Ratio 0.29
0.28
Reduction in Area, % 34 to 40
56
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 460 to 550
720
Tensile Strength: Yield (Proof), MPa 230 to 310
330

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
1090
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 52
14
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0 to 7.1
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
28
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.4
5.5
Embodied Energy, MJ/kg 18
74
Embodied Water, L/kg 45 to 46
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 96 to 120
240
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 260
270
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16 to 20
25
Strength to Weight: Bending, points 17 to 19
22
Thermal Diffusivity, mm2/s 14
3.8
Thermal Shock Resistance, points 15 to 18
15