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SAE-AISI 4621 Steel vs. ASTM A217 Cast Steel

Both SAE-AISI 4621 steel and ASTM A217 cast steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4621 steel and the bottom bar is ASTM A217 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
160 to 210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 27
21 to 27
Fatigue Strength, MPa 270
200 to 320
Poisson's Ratio 0.29
0.28 to 0.29
Shear Modulus, GPa 73
73 to 75
Tensile Strength: Ultimate (UTS), MPa 500
540 to 710
Tensile Strength: Yield (Proof), MPa 360
270 to 460

Thermal Properties

Latent Heat of Fusion, J/g 250
250 to 270
Maximum Temperature: Mechanical, °C 410
410 to 600
Melting Completion (Liquidus), °C 1460
1450 to 1460
Melting Onset (Solidus), °C 1420
1410 to 1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 46
26 to 50
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.3 to 9.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.4 to 11

Otherwise Unclassified Properties

Base Metal Price, % relative 3.3
2.4 to 7.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.5 to 2.1
Embodied Energy, MJ/kg 22
20 to 28
Embodied Water, L/kg 50
47 to 87

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 340
190 to 570
Stiffness to Weight: Axial, points 13
13 to 14
Stiffness to Weight: Bending, points 24
24 to 25
Strength to Weight: Axial, points 18
19 to 25
Strength to Weight: Bending, points 18
19 to 23
Thermal Diffusivity, mm2/s 12
6.9 to 14
Thermal Shock Resistance, points 15
16 to 20