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ASTM A27 Cast Steel vs. AISI 422 Stainless Steel

Both ASTM A27 cast steel and AISI 422 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 AISI 422 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25 to 27
15 to 17
Fatigue Strength, MPa 170 to 230
410 to 500
Poisson's Ratio 0.29
0.28
Reduction in Area, % 34 to 40
34 to 40
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 460 to 550
910 to 1080
Tensile Strength: Yield (Proof), MPa 230 to 310
670 to 870

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
650
Melting Completion (Liquidus), °C 1460
1480
Melting Onset (Solidus), °C 1420
1470
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
24
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0 to 7.1
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
5.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
11
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
3.1
Embodied Energy, MJ/kg 18
44
Embodied Water, L/kg 45 to 46
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 96 to 120
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 260
1140 to 1910
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 16 to 20
32 to 38
Strength to Weight: Bending, points 17 to 19
26 to 30
Thermal Diffusivity, mm2/s 14
6.4
Thermal Shock Resistance, points 15 to 18
33 to 39