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EN 1.4618 Stainless Steel vs. EN 1.4901 Stainless Steel

Both EN 1.4618 stainless steel and EN 1.4901 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 33 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 1.4618 stainless steel and the bottom bar is EN 1.4901 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 51
19
Fatigue Strength, MPa 240 to 250
310
Impact Strength: V-Notched Charpy, J 90 to 91
38
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 480 to 500
460
Tensile Strength: Ultimate (UTS), MPa 680 to 700
740
Tensile Strength: Yield (Proof), MPa 250 to 260
490

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Corrosion, °C 410
380
Maximum Temperature: Mechanical, °C 900
650
Melting Completion (Liquidus), °C 1400
1490
Melting Onset (Solidus), °C 1360
1450
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
26
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.7
2.8
Embodied Energy, MJ/kg 39
40
Embodied Water, L/kg 150
89

Common Calculations

PREN (Pitting Resistance) 19
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
120
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
620
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 25
26
Strength to Weight: Bending, points 22 to 23
23
Thermal Diffusivity, mm2/s 4.0
6.9
Thermal Shock Resistance, points 15 to 16
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0 to 0.1
0.070 to 0.13
Chromium (Cr), % 16.5 to 18.5
8.5 to 9.5
Copper (Cu), % 1.0 to 2.5
0
Iron (Fe), % 62.7 to 72.5
85.8 to 89.1
Manganese (Mn), % 5.5 to 9.5
0.3 to 0.6
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 4.5 to 5.5
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0 to 0.15
0.030 to 0.070
Phosphorus (P), % 0 to 0.070
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
1.5 to 2.0
Vanadium (V), % 0
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.010