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EN 1.4418 Stainless Steel vs. S20910 Stainless Steel

Both EN 1.4418 stainless steel and S20910 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4418 stainless steel and the bottom bar is S20910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 16 to 20
14 to 39
Fatigue Strength, MPa 350 to 480
310 to 460
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
79
Shear Strength, MPa 530 to 620
500 to 570
Tensile Strength: Ultimate (UTS), MPa 860 to 1000
780 to 940
Tensile Strength: Yield (Proof), MPa 540 to 790
430 to 810

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
460
Maximum Temperature: Mechanical, °C 870
1080
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
13
Thermal Expansion, µm/m-K 10
16

Otherwise Unclassified Properties

Base Metal Price, % relative 13
22
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
4.8
Embodied Energy, MJ/kg 39
68
Embodied Water, L/kg 130
180

Common Calculations

PREN (Pitting Resistance) 20
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 730 to 1590
460 to 1640
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31 to 36
28 to 33
Strength to Weight: Bending, points 26 to 28
24 to 27
Thermal Diffusivity, mm2/s 4.0
3.6
Thermal Shock Resistance, points 31 to 36
17 to 21

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.060
Chromium (Cr), % 15 to 17
20.5 to 23.5
Iron (Fe), % 73.2 to 80.2
52.1 to 62.1
Manganese (Mn), % 0 to 1.5
4.0 to 6.0
Molybdenum (Mo), % 0.8 to 1.5
1.5 to 3.0
Nickel (Ni), % 4.0 to 6.0
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0 to 0.020
0.2 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0
0.1 to 0.3

Comparable Variants