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S40930 Stainless Steel vs. EN 1.4878 Stainless Steel

Both S40930 stainless steel and EN 1.4878 stainless steel are iron alloys. They have 82% 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 S40930 stainless steel and the bottom bar is EN 1.4878 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 23
45
Fatigue Strength, MPa 130
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 270
430
Tensile Strength: Ultimate (UTS), MPa 430
610
Tensile Strength: Yield (Proof), MPa 190
210

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 460
490
Maximum Temperature: Mechanical, °C 710
850
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
17

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
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.3
3.2
Embodied Energy, MJ/kg 32
46
Embodied Water, L/kg 94
140

Common Calculations

PREN (Pitting Resistance) 11
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
210
Resilience: Unit (Modulus of Resilience), kJ/m3 94
120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 16
22
Strength to Weight: Bending, points 16
20
Thermal Diffusivity, mm2/s 6.7
4.0
Thermal Shock Resistance, points 16
13

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 10.5 to 11.7
17 to 19
Iron (Fe), % 84.7 to 89.4
65 to 74
Manganese (Mn), % 0 to 1.0
0 to 2.0
Nickel (Ni), % 0 to 0.5
9.0 to 12
Niobium (Nb), % 0.080 to 0.75
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.015
Titanium (Ti), % 0.050 to 0.2
0 to 0.8