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EN 1.7706 Steel vs. ASTM A372 Grade J Steel

Both EN 1.7706 steel and ASTM A372 grade J steel are iron alloys. They have a very high 98% 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 EN 1.7706 steel and the bottom bar is ASTM A372 grade J steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
200 to 310
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
17 to 22
Fatigue Strength, MPa 330
310 to 570
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 690
650 to 1020
Tensile Strength: Yield (Proof), MPa 500
430 to 850

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 440
420
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
44
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
2.4
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.3
1.5
Embodied Energy, MJ/kg 32
20
Embodied Water, L/kg 57
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
130 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 670
500 to 1930
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
23 to 36
Strength to Weight: Bending, points 22
21 to 29
Thermal Diffusivity, mm2/s 11
12
Thermal Shock Resistance, points 20
19 to 30

Alloy Composition

Carbon (C), % 0.15 to 0.2
0.35 to 0.5
Chromium (Cr), % 1.2 to 1.5
0.8 to 1.2
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 94.7 to 97.1
96.7 to 97.8
Manganese (Mn), % 0.5 to 0.9
0.75 to 1.1
Molybdenum (Mo), % 0.9 to 1.1
0.15 to 0.25
Nickel (Ni), % 0 to 0.4
0
Phosphorus (P), % 0 to 0.020
0 to 0.015
Silicon (Si), % 0 to 0.6
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.010
Vanadium (V), % 0.2 to 0.3
0