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ASTM A372 Grade C Steel vs. EN 1.4938 Stainless Steel

Both ASTM A372 grade C steel and EN 1.4938 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 30 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 ASTM A372 grade C steel and the bottom bar is EN 1.4938 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
16 to 17
Fatigue Strength, MPa 290
390 to 520
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 440
540 to 630
Tensile Strength: Ultimate (UTS), MPa 710
870 to 1030
Tensile Strength: Yield (Proof), MPa 430
640 to 870

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
750
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
30
Thermal Expansion, µm/m-K 12
11

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
10
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.3
Embodied Energy, MJ/kg 19
47
Embodied Water, L/kg 46
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
140 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 500
1050 to 1920
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
31 to 37
Strength to Weight: Bending, points 23
26 to 29
Thermal Diffusivity, mm2/s 14
8.1
Thermal Shock Resistance, points 22
30 to 35

Alloy Composition

Carbon (C), % 0 to 0.48
0.080 to 0.15
Chromium (Cr), % 0
11 to 12.5
Iron (Fe), % 97.5 to 99.85
80.5 to 84.8
Manganese (Mn), % 0 to 1.7
0.4 to 0.9
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 0
2.0 to 3.0
Nitrogen (N), % 0
0.020 to 0.040
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.015
Vanadium (V), % 0
0.25 to 0.4