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ASTM A27 Cast Steel vs. S44800 Stainless Steel

Both ASTM A27 cast steel and S44800 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 S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 25 to 27
23
Fatigue Strength, MPa 170 to 230
300
Poisson's Ratio 0.29
0.27
Reduction in Area, % 34 to 40
45
Shear Modulus, GPa 73
82
Tensile Strength: Ultimate (UTS), MPa 460 to 550
590
Tensile Strength: Yield (Proof), MPa 230 to 310
450

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
17
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0 to 7.1
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
19
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.8
Embodied Energy, MJ/kg 18
52
Embodied Water, L/kg 45 to 46
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 96 to 120
120
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 260
480
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 16 to 20
21
Strength to Weight: Bending, points 17 to 19
20
Thermal Diffusivity, mm2/s 14
4.6
Thermal Shock Resistance, points 15 to 18
19