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ASTM A356 Grade 6 vs. S64512 Stainless Steel

Both ASTM A356 grade 6 and S64512 stainless steel are iron alloys. Both are furnished in the heat treated (HT) condition. They have 85% 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 S64512 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
330
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
17
Fatigue Strength, MPa 250
540
Poisson's Ratio 0.29
0.28
Reduction in Area, % 39
34
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 550
1140
Tensile Strength: Yield (Proof), MPa 350
890

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 430
750
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 41
28
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
4.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
10
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
3.3
Embodied Energy, MJ/kg 21
47
Embodied Water, L/kg 53
110

Common Calculations

PREN (Pitting Resistance) 3.1
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
180
Resilience: Unit (Modulus of Resilience), kJ/m3 320
2020
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20
40
Strength to Weight: Bending, points 19
31
Thermal Diffusivity, mm2/s 11
7.5
Thermal Shock Resistance, points 16
42

Alloy Composition

Carbon (C), % 0 to 0.2
0.080 to 0.15
Chromium (Cr), % 1.0 to 1.5
11 to 12.5
Iron (Fe), % 96.2 to 98.1
80.6 to 84.7
Manganese (Mn), % 0.5 to 0.8
0.5 to 0.9
Molybdenum (Mo), % 0.45 to 0.65
1.5 to 2.0
Nickel (Ni), % 0
2.0 to 3.0
Nitrogen (N), % 0
0.010 to 0.050
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 0.6
0 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.025
Vanadium (V), % 0
0.25 to 0.4