MakeItFrom.com
Menu (ESC)

EN 1.4031 Stainless Steel vs. S40945 Stainless Steel

Both EN 1.4031 stainless steel and S40945 stainless steel are iron alloys. They have a very high 97% 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 1.4031 stainless steel and the bottom bar is S40945 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 13
25
Fatigue Strength, MPa 220 to 400
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Shear Strength, MPa 400 to 540
270
Tensile Strength: Ultimate (UTS), MPa 670 to 900
430
Tensile Strength: Yield (Proof), MPa 390 to 730
230

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 390
450
Maximum Temperature: Mechanical, °C 770
710
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 30
26
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
8.0
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 1.9
2.2
Embodied Energy, MJ/kg 27
31
Embodied Water, L/kg 100
94

Common Calculations

PREN (Pitting Resistance) 14
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 94
89
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1360
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 32
15
Strength to Weight: Bending, points 22 to 27
16
Thermal Diffusivity, mm2/s 8.1
6.9
Thermal Shock Resistance, points 23 to 32
15

Alloy Composition

Carbon (C), % 0.36 to 0.42
0 to 0.030
Chromium (Cr), % 12.5 to 14.5
10.5 to 11.7
Iron (Fe), % 83 to 87.1
85.1 to 89.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0.18 to 0.4
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
0.050 to 0.2