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S31655 Stainless Steel vs. ASTM A217 Cast Steel

Both S31655 stainless steel and ASTM A217 cast steel are iron alloys. There are 31 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 S31655 stainless steel and the bottom bar is ASTM A217 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
160 to 210
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
21 to 27
Fatigue Strength, MPa 300
200 to 320
Poisson's Ratio 0.28
0.28 to 0.29
Shear Modulus, GPa 78
73 to 75
Tensile Strength: Ultimate (UTS), MPa 710
540 to 710
Tensile Strength: Yield (Proof), MPa 350
270 to 460

Thermal Properties

Latent Heat of Fusion, J/g 290
250 to 270
Maximum Temperature: Mechanical, °C 1010
410 to 600
Melting Completion (Liquidus), °C 1430
1450 to 1460
Melting Onset (Solidus), °C 1380
1410 to 1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
26 to 50
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.3 to 9.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.4 to 11

Otherwise Unclassified Properties

Base Metal Price, % relative 17
2.4 to 7.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.3
1.5 to 2.1
Embodied Energy, MJ/kg 46
20 to 28
Embodied Water, L/kg 160
47 to 87

Common Calculations

PREN (Pitting Resistance) 27
2.5 to 13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
110 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 310
190 to 570
Stiffness to Weight: Axial, points 14
13 to 14
Stiffness to Weight: Bending, points 25
24 to 25
Strength to Weight: Axial, points 25
19 to 25
Strength to Weight: Bending, points 23
19 to 23
Thermal Diffusivity, mm2/s 4.0
6.9 to 14
Thermal Shock Resistance, points 16
16 to 20