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EN 1.7366 Steel vs. ASTM A369 Grade FP21

Both EN 1.7366 steel and ASTM A369 grade FP21 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 1.7366 steel and the bottom bar is ASTM A369 grade FP21.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 210
140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 19
20
Fatigue Strength, MPa 160 to 320
160
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
74
Shear Strength, MPa 290 to 440
300
Tensile Strength: Ultimate (UTS), MPa 460 to 710
470
Tensile Strength: Yield (Proof), MPa 230 to 480
240

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Maximum Temperature: Mechanical, °C 510
470
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 40
41
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.1
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
4.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
1.8
Embodied Energy, MJ/kg 23
23
Embodied Water, L/kg 69
61

Common Calculations

PREN (Pitting Resistance) 6.8
6.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 74 to 110
80
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 600
150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 16 to 25
17
Strength to Weight: Bending, points 17 to 23
17
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 13 to 20
14

Alloy Composition

Carbon (C), % 0 to 0.18
0.050 to 0.15
Chromium (Cr), % 4.0 to 6.0
2.7 to 3.4
Iron (Fe), % 91.9 to 95.3
94.3 to 96.2
Manganese (Mn), % 0.3 to 0.8
0.3 to 0.6
Molybdenum (Mo), % 0.45 to 0.65
0.8 to 1.1
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.025