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EN 1.4945 Stainless Steel vs. S31100 Stainless Steel

Both EN 1.4945 stainless steel and S31100 stainless steel are iron alloys. They have 86% 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 EN 1.4945 stainless steel and the bottom bar is S31100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 220
270
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 19 to 34
4.5
Fatigue Strength, MPa 230 to 350
330
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Shear Strength, MPa 430 to 460
580
Tensile Strength: Ultimate (UTS), MPa 640 to 740
1000
Tensile Strength: Yield (Proof), MPa 290 to 550
710

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 520
470
Maximum Temperature: Mechanical, °C 920
1100
Melting Completion (Liquidus), °C 1490
1420
Melting Onset (Solidus), °C 1440
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
16
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 30
16
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 5.0
3.1
Embodied Energy, MJ/kg 73
44
Embodied Water, L/kg 150
170

Common Calculations

PREN (Pitting Resistance) 23
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
40
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 760
1240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 25
36
Strength to Weight: Bending, points 20 to 22
29
Thermal Diffusivity, mm2/s 3.7
4.2
Thermal Shock Resistance, points 14 to 16
28

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.060
Chromium (Cr), % 15.5 to 17.5
25 to 27
Iron (Fe), % 57.9 to 65.7
63.6 to 69
Manganese (Mn), % 0 to 1.5
0 to 1.0
Nickel (Ni), % 15.5 to 17.5
6.0 to 7.0
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0.3 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 2.5 to 3.5
0