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S40930 Stainless Steel vs. ASTM A356 Grade 9

Both S40930 stainless steel and ASTM A356 grade 9 are iron alloys. They have 89% of their average alloy composition in common. 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 S40930 stainless steel and the bottom bar is ASTM A356 grade 9.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
17
Fatigue Strength, MPa 130
310
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 430
670
Tensile Strength: Yield (Proof), MPa 190
460

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Maximum Temperature: Mechanical, °C 710
440
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1410
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
41
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
3.6
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.3
2.4
Embodied Energy, MJ/kg 32
33
Embodied Water, L/kg 94
56

Common Calculations

PREN (Pitting Resistance) 11
4.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
100
Resilience: Unit (Modulus of Resilience), kJ/m3 94
570
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 16
24
Strength to Weight: Bending, points 16
22
Thermal Diffusivity, mm2/s 6.7
11
Thermal Shock Resistance, points 16
19

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.2
Chromium (Cr), % 10.5 to 11.7
1.0 to 1.5
Iron (Fe), % 84.7 to 89.4
95.2 to 97.2
Manganese (Mn), % 0 to 1.0
0.5 to 0.9
Molybdenum (Mo), % 0
0.9 to 1.2
Nickel (Ni), % 0 to 0.5
0
Niobium (Nb), % 0.080 to 0.75
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.2 to 0.6
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0.050 to 0.2
0
Vanadium (V), % 0
0.2 to 0.35