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EN 1.7779 Steel vs. ASTM A182 Grade F122

Both EN 1.7779 steel and ASTM A182 grade F122 are iron alloys. They have 89% of their average alloy composition in common. There are 32 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 EN 1.7779 steel and the bottom bar is ASTM A182 grade F122.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
220
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
23
Fatigue Strength, MPa 430
320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 500
450
Tensile Strength: Ultimate (UTS), MPa 810
710
Tensile Strength: Yield (Proof), MPa 660
450

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 470
600
Melting Completion (Liquidus), °C 1460
1490
Melting Onset (Solidus), °C 1420
1440
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
24
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
10
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
12

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
12
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.8
3.0
Embodied Energy, MJ/kg 41
44
Embodied Water, L/kg 64
100

Common Calculations

PREN (Pitting Resistance) 5.0
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
140
Resilience: Unit (Modulus of Resilience), kJ/m3 1150
520
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29
25
Strength to Weight: Bending, points 25
22
Thermal Diffusivity, mm2/s 11
6.4
Thermal Shock Resistance, points 23
19

Alloy Composition

Aluminum (Al), % 0 to 0.040
0 to 0.020
Boron (B), % 0
0 to 0.0050
Carbon (C), % 0.17 to 0.23
0.070 to 0.14
Chromium (Cr), % 3.0 to 3.3
10 to 11.5
Copper (Cu), % 0 to 0.3
0.3 to 1.7
Iron (Fe), % 93.8 to 95.4
81.3 to 87.7
Manganese (Mn), % 0.3 to 0.5
0 to 0.7
Molybdenum (Mo), % 0.5 to 0.6
0.25 to 0.6
Nickel (Ni), % 0 to 0.3
0 to 0.5
Niobium (Nb), % 0
0.040 to 0.1
Nitrogen (N), % 0
0.040 to 0.1
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
1.5 to 2.5
Vanadium (V), % 0.45 to 0.55
0.15 to 0.3
Zirconium (Zr), % 0
0 to 0.010