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Annealed AISI 440C vs. EN 1.4923 +A Steel

Both annealed AISI 440C and EN 1.4923 +A steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 94% 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 annealed AISI 440C and the bottom bar is EN 1.4923 +A steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 14
21
Fatigue Strength, MPa 260
300
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Shear Strength, MPa 430
540
Tensile Strength: Ultimate (UTS), MPa 710
870
Tensile Strength: Yield (Proof), MPa 450
470

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 390
380
Maximum Temperature: Mechanical, °C 870
740
Melting Completion (Liquidus), °C 1480
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 22
24
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
8.0
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
2.9
Embodied Energy, MJ/kg 31
41
Embodied Water, L/kg 120
100

Common Calculations

PREN (Pitting Resistance) 18
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 88
150
Resilience: Unit (Modulus of Resilience), kJ/m3 520
570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26
31
Strength to Weight: Bending, points 23
26
Thermal Diffusivity, mm2/s 6.0
6.5
Thermal Shock Resistance, points 26
30

Alloy Composition

Carbon (C), % 1.0 to 1.2
0.18 to 0.24
Chromium (Cr), % 16 to 18
11 to 12.5
Iron (Fe), % 78 to 83.1
83.5 to 87.1
Manganese (Mn), % 0 to 1.0
0.4 to 0.9
Molybdenum (Mo), % 0 to 0.75
0.8 to 1.2
Nickel (Ni), % 0
0.3 to 0.8
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.015
Vanadium (V), % 0
0.25 to 0.35