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EN 1.4958 Stainless Steel vs. S40920 Stainless Steel

Both EN 1.4958 stainless steel and S40920 stainless steel are iron alloys. They have 58% 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 1.4958 stainless steel and the bottom bar is S40920 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
22
Fatigue Strength, MPa 170
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 430
270
Tensile Strength: Ultimate (UTS), MPa 630
430
Tensile Strength: Yield (Proof), MPa 190
190

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Corrosion, °C 500
450
Maximum Temperature: Mechanical, °C 1090
710
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1350
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
26
Thermal Expansion, µm/m-K 15
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 30
6.5
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.3
2.0
Embodied Energy, MJ/kg 75
28
Embodied Water, L/kg 200
94

Common Calculations

PREN (Pitting Resistance) 21
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
78
Resilience: Unit (Modulus of Resilience), kJ/m3 95
97
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
15
Strength to Weight: Bending, points 20
16
Thermal Diffusivity, mm2/s 3.2
6.9
Thermal Shock Resistance, points 15
15

Alloy Composition

Aluminum (Al), % 0.2 to 0.5
0
Carbon (C), % 0.030 to 0.080
0 to 0.030
Chromium (Cr), % 19 to 22
10.5 to 11.7
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 41.1 to 50.6
85.1 to 89.4
Manganese (Mn), % 0 to 1.5
0 to 1.0
Nickel (Ni), % 30 to 32.5
0 to 0.5
Niobium (Nb), % 0 to 0.1
0 to 0.1
Nitrogen (N), % 0 to 0.030
0 to 0.030
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 0.2 to 0.5
0.15 to 0.5