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S40930 Stainless Steel vs. EN 1.4618 Stainless Steel

Both S40930 stainless steel and EN 1.4618 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 33 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 S40930 stainless steel and the bottom bar is EN 1.4618 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
200 to 210
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 23
51
Fatigue Strength, MPa 130
240 to 250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 270
480 to 500
Tensile Strength: Ultimate (UTS), MPa 430
680 to 700
Tensile Strength: Yield (Proof), MPa 190
250 to 260

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 460
410
Maximum Temperature: Mechanical, °C 710
900
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1410
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.3
2.7
Embodied Energy, MJ/kg 32
39
Embodied Water, L/kg 94
150

Common Calculations

PREN (Pitting Resistance) 11
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
270 to 280
Resilience: Unit (Modulus of Resilience), kJ/m3 94
160 to 170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 16
24 to 25
Strength to Weight: Bending, points 16
22 to 23
Thermal Diffusivity, mm2/s 6.7
4.0
Thermal Shock Resistance, points 16
15 to 16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 10.5 to 11.7
16.5 to 18.5
Copper (Cu), % 0
1.0 to 2.5
Iron (Fe), % 84.7 to 89.4
62.7 to 72.5
Manganese (Mn), % 0 to 1.0
5.5 to 9.5
Nickel (Ni), % 0 to 0.5
4.5 to 5.5
Niobium (Nb), % 0.080 to 0.75
0
Nitrogen (N), % 0 to 0.030
0 to 0.15
Phosphorus (P), % 0 to 0.040
0 to 0.070
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.010
Titanium (Ti), % 0.050 to 0.2
0