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ASTM A372 Grade C Steel vs. AISI 416 Stainless Steel

Both ASTM A372 grade C steel and AISI 416 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A372 grade C steel and the bottom bar is AISI 416 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
230 to 320
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
13 to 31
Fatigue Strength, MPa 290
230 to 340
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 440
340 to 480
Tensile Strength: Ultimate (UTS), MPa 710
510 to 800
Tensile Strength: Yield (Proof), MPa 430
290 to 600

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
680
Melting Completion (Liquidus), °C 1460
1530
Melting Onset (Solidus), °C 1420
1480
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
30
Thermal Expansion, µm/m-K 12
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
7.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
1.9
Embodied Energy, MJ/kg 19
27
Embodied Water, L/kg 46
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
98 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 500
220 to 940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
18 to 29
Strength to Weight: Bending, points 23
18 to 25
Thermal Diffusivity, mm2/s 14
8.1
Thermal Shock Resistance, points 22
19 to 30

Alloy Composition

Carbon (C), % 0 to 0.48
0 to 0.15
Chromium (Cr), % 0
12 to 14
Iron (Fe), % 97.5 to 99.85
83.2 to 87.9
Manganese (Mn), % 0 to 1.7
0 to 1.3
Phosphorus (P), % 0 to 0.015
0 to 0.060
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.010
0.15 to 0.35