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S31730 Stainless Steel vs. EN 1.4347 Stainless Steel

Both S31730 stainless steel and EN 1.4347 stainless steel are iron alloys. They have 83% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is S31730 stainless steel and the bottom bar is EN 1.4347 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
23
Fatigue Strength, MPa 170
320
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 540
660
Tensile Strength: Yield (Proof), MPa 200
480

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 990
1100
Melting Completion (Liquidus), °C 1430
1410
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 470
490
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 24
16
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 4.6
3.1
Embodied Energy, MJ/kg 63
44
Embodied Water, L/kg 180
170

Common Calculations

PREN (Pitting Resistance) 30
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
140
Resilience: Unit (Modulus of Resilience), kJ/m3 99
570
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
24
Strength to Weight: Bending, points 18
22
Thermal Shock Resistance, points 12
19

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.050
Chromium (Cr), % 17 to 19
25 to 27
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 52.4 to 61
62.2 to 69.4
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 15 to 16.5
5.5 to 7.5
Nitrogen (N), % 0 to 0.045
0.1 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.020