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S31100 Stainless Steel vs. EN 1.4309 Stainless Steel

Both S31100 stainless steel and EN 1.4309 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S31100 stainless steel and the bottom bar is EN 1.4309 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 4.5
34
Fatigue Strength, MPa 330
170
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 1000
490
Tensile Strength: Yield (Proof), MPa 710
210

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 470
420
Maximum Temperature: Mechanical, °C 1100
960
Melting Completion (Liquidus), °C 1420
1420
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 16
16
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.1
3.1
Embodied Energy, MJ/kg 44
45
Embodied Water, L/kg 170
150

Common Calculations

PREN (Pitting Resistance) 26
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
140
Resilience: Unit (Modulus of Resilience), kJ/m3 1240
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 36
18
Strength to Weight: Bending, points 29
18
Thermal Diffusivity, mm2/s 4.2
4.1
Thermal Shock Resistance, points 28
11

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 25 to 27
18 to 20
Iron (Fe), % 63.6 to 69
64.2 to 73
Manganese (Mn), % 0 to 1.0
0 to 2.0
Nickel (Ni), % 6.0 to 7.0
9.0 to 12
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Titanium (Ti), % 0 to 0.25
0