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ASTM A27 Cast Steel vs. AISI 446 Stainless Steel

Both ASTM A27 cast steel and AISI 446 stainless steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM A27 cast steel and the bottom bar is AISI 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25 to 27
23
Fatigue Strength, MPa 170 to 230
200
Poisson's Ratio 0.29
0.27
Reduction in Area, % 34 to 40
50
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 460 to 550
570
Tensile Strength: Yield (Proof), MPa 230 to 310
300

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
1180
Melting Completion (Liquidus), °C 1460
1510
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
490
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
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.4
Embodied Energy, MJ/kg 18
35
Embodied Water, L/kg 45 to 46
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 96 to 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 260
230
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
26
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