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ASTM A372 Grade G Steel vs. EN 1.0070 Steel

Both ASTM A372 grade G steel and EN 1.0070 steel are iron alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is ASTM A372 grade G steel and the bottom bar is EN 1.0070 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 280
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 22
9.1
Fatigue Strength, MPa 310 to 380
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 410 to 570
440
Tensile Strength: Ultimate (UTS), MPa 650 to 910
740
Tensile Strength: Yield (Proof), MPa 430 to 550
350

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
400
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
53
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
6.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
7.8

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
1.7
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 20
18
Embodied Water, L/kg 49
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 160
56
Resilience: Unit (Modulus of Resilience), kJ/m3 500 to 810
320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 32
26
Strength to Weight: Bending, points 21 to 27
23
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 19 to 27
23

Alloy Composition

Carbon (C), % 0.25 to 0.35
0
Chromium (Cr), % 0.4 to 0.65
0
Iron (Fe), % 97.4 to 98.4
99.876 to 100
Manganese (Mn), % 0.7 to 1.0
0
Molybdenum (Mo), % 0.15 to 0.25
0
Nitrogen (N), % 0
0 to 0.014
Phosphorus (P), % 0 to 0.015
0 to 0.055
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.010
0 to 0.055