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AISI 304N Stainless Steel vs. ASTM A356 Grade 9

Both AISI 304N stainless steel and ASTM A356 grade 9 are iron alloys. They have 73% of their average alloy composition in common. There are 31 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 AISI 304N stainless steel and the bottom bar is ASTM A356 grade 9.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 360
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 9.1 to 45
17
Fatigue Strength, MPa 220 to 440
310
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 620 to 1180
670
Tensile Strength: Yield (Proof), MPa 270 to 850
460

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Maximum Temperature: Mechanical, °C 960
440
Melting Completion (Liquidus), °C 1420
1470
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
41
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 15
3.6
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.0
2.4
Embodied Energy, MJ/kg 43
33
Embodied Water, L/kg 150
56

Common Calculations

PREN (Pitting Resistance) 21
4.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 280
100
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 1830
570
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22 to 42
24
Strength to Weight: Bending, points 21 to 32
22
Thermal Diffusivity, mm2/s 4.2
11
Thermal Shock Resistance, points 14 to 26
19

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.2
Chromium (Cr), % 18 to 20
1.0 to 1.5
Iron (Fe), % 66.4 to 73.9
95.2 to 97.2
Manganese (Mn), % 0 to 2.0
0.5 to 0.9
Molybdenum (Mo), % 0
0.9 to 1.2
Nickel (Ni), % 8.0 to 10.5
0
Nitrogen (N), % 0.1 to 0.16
0
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 0.75
0.2 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.2 to 0.35