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ASTM A372 Grade M Steel vs. EN 1.7378 Steel

Both ASTM A372 grade M steel and EN 1.7378 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A372 grade M steel and the bottom bar is EN 1.7378 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240 to 280
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18 to 21
17
Fatigue Strength, MPa 450 to 520
330
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Shear Strength, MPa 510 to 570
430
Tensile Strength: Ultimate (UTS), MPa 810 to 910
700
Tensile Strength: Yield (Proof), MPa 660 to 770
490

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 450
460
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 46
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
4.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.0
2.3
Embodied Energy, MJ/kg 27
33
Embodied Water, L/kg 61
61

Common Calculations

PREN (Pitting Resistance) 3.4
5.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1140 to 1580
630
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29 to 32
25
Strength to Weight: Bending, points 24 to 27
22
Thermal Diffusivity, mm2/s 12
10
Thermal Shock Resistance, points 24 to 27
20

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0015 to 0.0070
Carbon (C), % 0 to 0.23
0.050 to 0.1
Chromium (Cr), % 1.5 to 2.0
2.2 to 2.6
Iron (Fe), % 92.5 to 95.1
94.6 to 96.1
Manganese (Mn), % 0.2 to 0.4
0.3 to 0.7
Molybdenum (Mo), % 0.4 to 0.6
0.9 to 1.1
Nickel (Ni), % 2.8 to 3.9
0
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.015
0 to 0.020
Silicon (Si), % 0 to 0.3
0.15 to 0.45
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0
0.050 to 0.1
Vanadium (V), % 0 to 0.080
0.2 to 0.3