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EN 1.3551 Steel vs. AISI 434 Stainless Steel

Both EN 1.3551 steel and AISI 434 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.3551 steel and the bottom bar is AISI 434 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
78
Tensile Strength: Ultimate (UTS), MPa 720
520

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Maximum Temperature: Mechanical, °C 530
880
Melting Completion (Liquidus), °C 1490
1510
Melting Onset (Solidus), °C 1450
1430
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 36
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.6
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 9.9
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
9.5
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.9
2.4
Embodied Energy, MJ/kg 71
33
Embodied Water, L/kg 82
120

Common Calculations

PREN (Pitting Resistance) 18
20
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
19
Strength to Weight: Bending, points 23
18
Thermal Diffusivity, mm2/s 9.8
6.7
Thermal Shock Resistance, points 21
19

Alloy Composition

Carbon (C), % 0.77 to 0.85
0 to 0.12
Chromium (Cr), % 3.9 to 4.3
16 to 18
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 88.8 to 91.1
78.6 to 83.3
Manganese (Mn), % 0.15 to 0.35
0 to 1.0
Molybdenum (Mo), % 4.0 to 4.5
0.75 to 1.3
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0 to 0.25
0
Vanadium (V), % 0.9 to 1.1
0