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S38815 Stainless Steel vs. ASTM A356 Grade 9

Both S38815 stainless steel and ASTM A356 grade 9 are iron alloys. They have 65% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S38815 stainless steel and the bottom bar is ASTM A356 grade 9.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 34
17
Fatigue Strength, MPa 230
310
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Tensile Strength: Ultimate (UTS), MPa 610
670
Tensile Strength: Yield (Proof), MPa 290
460

Thermal Properties

Latent Heat of Fusion, J/g 370
260
Maximum Temperature: Mechanical, °C 860
440
Melting Completion (Liquidus), °C 1360
1470
Melting Onset (Solidus), °C 1310
1430
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 19
3.6
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 3.8
2.4
Embodied Energy, MJ/kg 54
33
Embodied Water, L/kg 140
56

Common Calculations

PREN (Pitting Resistance) 18
4.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
100
Resilience: Unit (Modulus of Resilience), kJ/m3 220
570
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
24
Strength to Weight: Bending, points 21
22
Thermal Shock Resistance, points 15
19

Alloy Composition

Aluminum (Al), % 0 to 0.3
0
Carbon (C), % 0 to 0.030
0 to 0.2
Chromium (Cr), % 13 to 15
1.0 to 1.5
Copper (Cu), % 0.75 to 1.5
0
Iron (Fe), % 56.1 to 67
95.2 to 97.2
Manganese (Mn), % 0 to 2.0
0.5 to 0.9
Molybdenum (Mo), % 0.75 to 1.5
0.9 to 1.2
Nickel (Ni), % 13 to 17
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 5.5 to 6.5
0.2 to 0.6
Sulfur (S), % 0 to 0.020
0 to 0.030
Vanadium (V), % 0
0.2 to 0.35