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ASTM A356 Grade 6 vs. S32550 Stainless Steel

Both ASTM A356 grade 6 and S32550 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 32 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 ASTM A356 grade 6 and the bottom bar is S32550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
260
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
21
Fatigue Strength, MPa 250
400
Poisson's Ratio 0.29
0.27
Reduction in Area, % 39
57
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 550
860
Tensile Strength: Yield (Proof), MPa 350
620

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 430
1100
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 41
16
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
20
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
3.8
Embodied Energy, MJ/kg 21
53
Embodied Water, L/kg 53
180

Common Calculations

PREN (Pitting Resistance) 3.1
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
160
Resilience: Unit (Modulus of Resilience), kJ/m3 320
940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20
31
Strength to Weight: Bending, points 19
26
Thermal Diffusivity, mm2/s 11
4.4
Thermal Shock Resistance, points 16
23

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.040
Chromium (Cr), % 1.0 to 1.5
24 to 27
Copper (Cu), % 0
1.5 to 2.5
Iron (Fe), % 96.2 to 98.1
57.2 to 67
Manganese (Mn), % 0.5 to 0.8
0 to 1.5
Molybdenum (Mo), % 0.45 to 0.65
2.9 to 3.9
Nickel (Ni), % 0
4.5 to 6.5
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030