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EN 1.3555 Steel vs. SAE-AISI A4 Steel

Both EN 1.3555 steel and SAE-AISI A4 steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.3555 steel and the bottom bar is SAE-AISI A4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 770
710 to 2050

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Melting Completion (Liquidus), °C 1500
1450
Melting Onset (Solidus), °C 1450
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 11
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 11
3.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.6
1.8
Embodied Energy, MJ/kg 81
24
Embodied Water, L/kg 90
59

Common Calculations

PREN (Pitting Resistance) 18
5.3
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27
25 to 73
Strength to Weight: Bending, points 23
23 to 46
Thermal Shock Resistance, points 22
23 to 67

Alloy Composition

Carbon (C), % 0.1 to 0.15
1.0 to 1.1
Chromium (Cr), % 3.9 to 4.3
0.9 to 2.2
Copper (Cu), % 0 to 0.1
0 to 0.25
Iron (Fe), % 85.4 to 87.7
92 to 95.5
Manganese (Mn), % 0.15 to 0.35
1.8 to 2.2
Molybdenum (Mo), % 4.0 to 4.5
0.9 to 1.4
Nickel (Ni), % 3.2 to 3.6
0 to 0.3
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0.1 to 0.25
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.030
Tungsten (W), % 0 to 0.15
0
Vanadium (V), % 1.0 to 1.3
0