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AISI 309 Stainless Steel vs. ASTM A356 Grade 10

Both AISI 309 stainless steel and ASTM A356 grade 10 are iron alloys. They have 65% 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 AISI 309 stainless steel and the bottom bar is ASTM A356 grade 10.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 210
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34 to 47
23
Fatigue Strength, MPa 250 to 280
300
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 78
74
Tensile Strength: Ultimate (UTS), MPa 600 to 710
670
Tensile Strength: Yield (Proof), MPa 260 to 350
430

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Maximum Temperature: Mechanical, °C 980
460
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
39
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 19
3.9
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.6
1.8
Embodied Energy, MJ/kg 51
23
Embodied Water, L/kg 170
59

Common Calculations

PREN (Pitting Resistance) 23
5.9
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 230
130
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 310
480
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 25
24
Strength to Weight: Bending, points 20 to 23
22
Thermal Diffusivity, mm2/s 4.3
11
Thermal Shock Resistance, points 14 to 16
19

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.2
Chromium (Cr), % 22 to 24
2.0 to 2.8
Iron (Fe), % 58 to 66
94.4 to 96.6
Manganese (Mn), % 0 to 2.0
0.5 to 0.8
Molybdenum (Mo), % 0
0.9 to 1.2
Nickel (Ni), % 12 to 15
0
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 0.75
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030