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S64512 Stainless Steel vs. ASTM A356 Grade 9

Both S64512 stainless steel and ASTM A356 grade 9 are iron alloys. Both are furnished in the heat treated (HT) condition. They have 86% 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 S64512 stainless steel and the bottom bar is ASTM A356 grade 9.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
17
Fatigue Strength, MPa 540
310
Poisson's Ratio 0.28
0.29
Reduction in Area, % 34
50
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 1140
670
Tensile Strength: Yield (Proof), MPa 890
460

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Maximum Temperature: Mechanical, °C 750
440
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 28
41
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 4.1
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 10
3.6
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.3
2.4
Embodied Energy, MJ/kg 47
33
Embodied Water, L/kg 110
56

Common Calculations

PREN (Pitting Resistance) 18
4.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
100
Resilience: Unit (Modulus of Resilience), kJ/m3 2020
570
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 40
24
Strength to Weight: Bending, points 31
22
Thermal Diffusivity, mm2/s 7.5
11
Thermal Shock Resistance, points 42
19

Alloy Composition

Carbon (C), % 0.080 to 0.15
0 to 0.2
Chromium (Cr), % 11 to 12.5
1.0 to 1.5
Iron (Fe), % 80.6 to 84.7
95.2 to 97.2
Manganese (Mn), % 0.5 to 0.9
0.5 to 0.9
Molybdenum (Mo), % 1.5 to 2.0
0.9 to 1.2
Nickel (Ni), % 2.0 to 3.0
0
Nitrogen (N), % 0.010 to 0.050
0
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.35
0.2 to 0.6
Sulfur (S), % 0 to 0.025
0 to 0.030
Vanadium (V), % 0.25 to 0.4
0.2 to 0.35