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ASTM A356 Grade 1 vs. AISI 441 Stainless Steel

Both ASTM A356 grade 1 and AISI 441 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM A356 grade 1 and the bottom bar is AISI 441 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 23
23
Fatigue Strength, MPa 200
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 550
470
Tensile Strength: Yield (Proof), MPa 280
270

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
910
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
23
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.8
Embodied Energy, MJ/kg 18
41
Embodied Water, L/kg 45
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
92
Resilience: Unit (Modulus of Resilience), kJ/m3 210
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20
17
Strength to Weight: Bending, points 19
17
Thermal Diffusivity, mm2/s 14
6.1
Thermal Shock Resistance, points 18
16

Alloy Composition

Carbon (C), % 0 to 0.35
0 to 0.030
Chromium (Cr), % 0
17.5 to 19.5
Iron (Fe), % 98.3 to 100
76 to 82.2
Manganese (Mn), % 0 to 0.7
0 to 1.0
Nickel (Ni), % 0
0 to 1.0
Niobium (Nb), % 0
0.3 to 0.9
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0.1 to 0.5