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EN 1.7703 Steel vs. ASTM A369 Grade FP12

Both EN 1.7703 steel and ASTM A369 grade FP12 are iron alloys. They have a very high 98% 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 EN 1.7703 steel and the bottom bar is ASTM A369 grade FP12.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
20
Fatigue Strength, MPa 320 to 340
170
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Shear Strength, MPa 420 to 430
300
Tensile Strength: Ultimate (UTS), MPa 670 to 690
470
Tensile Strength: Yield (Proof), MPa 460 to 500
250

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 460
430
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1430
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
45
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
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
2.8
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.5
1.6
Embodied Energy, MJ/kg 35
21
Embodied Water, L/kg 61
52

Common Calculations

PREN (Pitting Resistance) 5.6
2.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
81
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
160
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
17
Strength to Weight: Bending, points 22
17
Thermal Diffusivity, mm2/s 11
12
Thermal Shock Resistance, points 19 to 20
14

Alloy Composition

Carbon (C), % 0.11 to 0.15
0.050 to 0.15
Chromium (Cr), % 2.0 to 2.5
0.8 to 1.3
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 94.6 to 96.4
96.8 to 98.4
Manganese (Mn), % 0.3 to 0.6
0.3 to 0.61
Molybdenum (Mo), % 0.9 to 1.1
0.44 to 0.65
Nickel (Ni), % 0 to 0.25
0
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0 to 0.1
0 to 0.5
Sulfur (S), % 0 to 0.0050
0 to 0.025
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0.25 to 0.35
0