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EN 1.4901 Stainless Steel vs. EN 1.8879 Steel

Both EN 1.4901 stainless steel and EN 1.8879 steel are iron alloys. They have 90% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4901 stainless steel and the bottom bar is EN 1.8879 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
16
Fatigue Strength, MPa 310
460
Impact Strength: V-Notched Charpy, J 38
67
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 460
510
Tensile Strength: Ultimate (UTS), MPa 740
830
Tensile Strength: Yield (Proof), MPa 490
710

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Maximum Temperature: Mechanical, °C 650
420
Melting Completion (Liquidus), °C 1490
1460
Melting Onset (Solidus), °C 1450
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
40
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.2
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 11
3.7
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.9
Embodied Energy, MJ/kg 40
26
Embodied Water, L/kg 89
54

Common Calculations

PREN (Pitting Resistance) 14
2.0
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
120
Resilience: Unit (Modulus of Resilience), kJ/m3 620
1320
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
29
Strength to Weight: Bending, points 23
25
Thermal Diffusivity, mm2/s 6.9
11
Thermal Shock Resistance, points 23
24

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Boron (B), % 0.0010 to 0.0060
0 to 0.0050
Carbon (C), % 0.070 to 0.13
0 to 0.2
Chromium (Cr), % 8.5 to 9.5
0 to 1.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 85.8 to 89.1
91.9 to 100
Manganese (Mn), % 0.3 to 0.6
0 to 1.7
Molybdenum (Mo), % 0.3 to 0.6
0 to 0.7
Nickel (Ni), % 0 to 0.4
0 to 2.5
Niobium (Nb), % 0.040 to 0.090
0 to 0.060
Nitrogen (N), % 0.030 to 0.070
0 to 0.015
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.8
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0 to 0.010
0 to 0.050
Tungsten (W), % 1.5 to 2.0
0
Vanadium (V), % 0.15 to 0.25
0 to 0.12
Zirconium (Zr), % 0 to 0.010
0 to 0.15