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AISI 439 Stainless Steel vs. ASTM A148 Cast Steel

Both AISI 439 stainless steel and ASTM A148 cast steel are iron alloys. There are 31 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 AISI 439 stainless steel and the bottom bar is ASTM A148 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
190 to 390
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
5.7 to 25
Fatigue Strength, MPa 170
280 to 670
Poisson's Ratio 0.28
0.29
Reduction in Area, % 51
13 to 45
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 490
630 to 1300
Tensile Strength: Yield (Proof), MPa 250
390 to 1160

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 890
400 to 430
Melting Completion (Liquidus), °C 1510
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
37 to 47
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.3 to 7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
8.3 to 8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
2.3 to 3.3
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.3
1.5 to 1.7
Embodied Energy, MJ/kg 34
20 to 22
Embodied Water, L/kg 120
48 to 53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
71 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 160
400 to 3570
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
22 to 46
Strength to Weight: Bending, points 18
21 to 34
Thermal Diffusivity, mm2/s 6.7
9.9 to 13
Thermal Shock Resistance, points 16
18 to 38