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ASTM A217 Cast Steel vs. AISI 446 Stainless Steel

Both ASTM A217 cast steel and AISI 446 stainless steel are iron alloys. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A217 cast steel and the bottom bar is AISI 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 210
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21 to 27
23
Fatigue Strength, MPa 200 to 320
200
Poisson's Ratio 0.28 to 0.29
0.27
Reduction in Area, % 39 to 50
50
Shear Modulus, GPa 73 to 75
79
Tensile Strength: Ultimate (UTS), MPa 540 to 710
570
Tensile Strength: Yield (Proof), MPa 270 to 460
300

Thermal Properties

Latent Heat of Fusion, J/g 250 to 270
290
Maximum Temperature: Mechanical, °C 410 to 600
1180
Melting Completion (Liquidus), °C 1450 to 1460
1510
Melting Onset (Solidus), °C 1410 to 1420
1430
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 26 to 50
17
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3 to 9.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4 to 11
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4 to 7.0
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.5 to 2.1
2.4
Embodied Energy, MJ/kg 20 to 28
35
Embodied Water, L/kg 47 to 87
150

Common Calculations

PREN (Pitting Resistance) 2.5 to 13
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 570
230
Stiffness to Weight: Axial, points 13 to 14
15
Stiffness to Weight: Bending, points 24 to 25
26
Strength to Weight: Axial, points 19 to 25
21
Strength to Weight: Bending, points 19 to 23
20
Thermal Diffusivity, mm2/s 6.9 to 14
4.6
Thermal Shock Resistance, points 16 to 20
19