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EN 1.4634 Stainless Steel vs. S41045 Stainless Steel

Both EN 1.4634 stainless steel and S41045 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 92% 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 1.4634 stainless steel and the bottom bar is S41045 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 21
25
Fatigue Strength, MPa 180
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 340
280
Tensile Strength: Ultimate (UTS), MPa 540
430
Tensile Strength: Yield (Proof), MPa 280
230

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 500
430
Maximum Temperature: Mechanical, °C 900
740
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 21
29
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
8.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.9
2.2
Embodied Energy, MJ/kg 42
31
Embodied Water, L/kg 140
100

Common Calculations

PREN (Pitting Resistance) 19
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
92
Resilience: Unit (Modulus of Resilience), kJ/m3 200
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
16
Strength to Weight: Bending, points 19
16
Thermal Diffusivity, mm2/s 5.8
7.8
Thermal Shock Resistance, points 19
16

Alloy Composition

Aluminum (Al), % 0.2 to 1.5
0
Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 17.5 to 18.5
12 to 13
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 74.9 to 81.8
83.8 to 88
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.5
0 to 0.5
Niobium (Nb), % 0.3 to 1.0
0 to 0.6
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.050
0 to 0.040
Silicon (Si), % 0.2 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.030